This topic is in the 2016 archive. You can read it and like its posts here. It is read only.
Archive 2016Techart PRO AF adapter now In Stock!
p.62 #1Techart PRO AF adapter now In Stock!
Finally got a EF to M adapter that works with TechArt to use with my Rokkor 58/1.2 EF Converted .. works nicely. Slight glow wide open but useable. Only took a few test shots around the room since its already dark.
Wide open
https://c1.staticflickr.com/9/8549/29327443033_bda660caf1_o.jpg
F2
https://c1.staticflickr.com/9/8224/29327442813_ca219d05dd_o.jpg
and pics of it on the camera with adapters
https://c1.staticflickr.com/9/8497/29839477542_5c93e00fcc_b.jpg
Wide open
https://c1.staticflickr.com/9/8549/29327443033_bda660caf1_o.jpg
F2
https://c1.staticflickr.com/9/8224/29327442813_ca219d05dd_o.jpg
and pics of it on the camera with adapters
https://c1.staticflickr.com/9/8497/29839477542_5c93e00fcc_b.jpg
Sep 26, 2016 at 07:03 PM
p.62 #2Techart PRO AF adapter now In Stock!
To make it easier to find and simpler to maintain & update, the Techart PRO FAQ has been moved to its own thread. Many thanks for your encouragement and support.
Edited on Sep 27, 2016 at 05:03 PM · View previous versions
Edited on Sep 27, 2016 at 05:03 PM · View previous versions
Sep 27, 2016 at 01:07 AM
p.62 #3Techart PRO AF adapter now In Stock!
so this would work with an a7s and what mount of lens? EF?
joe256 wrote:
A great and cheap lens to use with the TAP is the Rokinon/Bower etc. 85 f/1.4. It is sharp and has great bokeh but the drawback has been manual focus. No more thanks to the TAP!
See these FM reviews:
https://www.fredmiranda.com/reviews/showproduct.php/product/507/sort/7/cat/61/page/1
joe256 wrote:
A great and cheap lens to use with the TAP is the Rokinon/Bower etc. 85 f/1.4. It is sharp and has great bokeh but the drawback has been manual focus. No more thanks to the TAP!
See these FM reviews:
https://www.fredmiranda.com/reviews/showproduct.php/product/507/sort/7/cat/61/page/1
Sep 27, 2016 at 01:08 AM
p.62 #4Techart PRO AF adapter now In Stock!
pizdets17 wrote:
so this would work with an a7s and what mount of lens? EF?
See these FM reviews:
https://www.fredmiranda.com/reviews/showproduct.php/product/507/sort/7/cat/61/page/1
No, it works only with Sony A7 II, Sony A7R II, and Sony A6300.
so this would work with an a7s and what mount of lens? EF?
joe256 wrote
A great and cheap lens to use with the TAP is the Rokinon/Bower etc. 85 f/1.4. It is sharp and has great bokeh but the drawback has been manual focus. No more thanks to the TAP!See these FM reviews:
https://www.fredmiranda.com/reviews/showproduct.php/product/507/sort/7/cat/61/page/1
No, it works only with Sony A7 II, Sony A7R II, and Sony A6300.
Sep 27, 2016 at 01:59 AM
p.62 #5Techart PRO AF adapter now In Stock!
Many thanks genji for the excellent first draft. Much appreciated.
A couple suggestions.
* List A6300 initially as well as compatible.
* The TAP supports 3-axis IBIS (according to their website), namely pitch, yaw, and roll.
For X- and Y-corrections to work it would need focus distance in addition to focal length.
Thanks again, K-H.
A couple suggestions.
* List A6300 initially as well as compatible.
* The TAP supports 3-axis IBIS (according to their website), namely pitch, yaw, and roll.
For X- and Y-corrections to work it would need focus distance in addition to focal length.
Thanks again, K-H.
Sep 27, 2016 at 02:08 AM
p.62 #6Techart PRO AF adapter now In Stock!
genji wrote:
This might help. Fred asked earlier in the thread if someone would volunteer to do an FAQ and I had some spare time on my hands. Any corrections or suggestions for additional FAQ topics are welcome!
What is the Techart PRO?
The Techart PRO adapter (abbreviated as "TAP") is an autofocus adapter for manual focus camera lenses when mounted on certain Sony mirrorless cameras. According to the Techart PRO website:
What are the main features of the Techart PRO?
FM member d-intrigue provided a realistic assessment of the Techart PRO:
Can the Techart PRO be used with any Sony mirrorless camera?
The Techart PRO has been designed to provide optimum performance with Sony cameras that support 3rd party PDAF (Phase Detection Auto Focus):
Techart do not recommend its use with CDAF-only cameras (Sony A7, A7R, A7S, etc) and a number of FM members have reported poor performance with these cameras.
Which autofocus features does the Techart PRO support?
Eye AF is not currently supported.
Why does the Techart PRO does not autofocus with my Sony A7 II / A7R II / A6300 camera?
The Techart PRO relies on PDAF (Phase Detection Auto Focus). Check Menu > Custom Settings (Gear Icon) > 7 > AF System and see that Phase Detection AF is selected.
Why is my Techart PRO having difficulty finding focus?
FM member GMPhotography offered a useful tip:
FM member ecarlino suggested the reason for this:
FM member k-h.a.w offered a tip for focusing fast lenses more accurately:
Why does the Techart PRO drain my battery so quickly?
The excessive battery usage is a known issue/bug. Fred Miranda suggested [https://www.fredmiranda.com/testforum/topic/1445543/43#13718779]a method to stop battery drainage[/url]:
In a later post Fred elaborated:
Why don't the Techart people answer email messages promptly?
FM member DavidBM provided a credible explanation:
How does the Techart PRO affect image quality?
For unit focusing lenses (i.e. those in which the entire optical assembly moves back and forward as the focusing ring is turned), the TAP does not affect image quality. For lenses with a floating element (FLE) design (i.e. the distance between lens groups is adjusted as the lens is focused in order to improve performance at close range), the TAP will have an effect on image quality. In this case, if using the lens at close distances, it will be preferable to pre-focus manually before allowing the Techart PRO to achieve accurate focus.
FM member freaklikeme elaborates:
Using the TAP with floating element lenses is discussed at length in this thread.
Will the Techart PRO autofocus over the full focusing range of the lens?
The autofocus range varies with the lens. The Techart PRO FAQ gives ranges from 6.5cm to Infinity for a 15mm lens up to 4.2m to Infinity for a 135mm lens when the focus ring on the lens is set to Infinity.
Must the focusing ring on the lens always be set at Infinity?
No, the focusing ring on the lens can be set according to the circumstances. FM member k-h.a.w explained in this post how he divides his lenses into groups:
How should I configure my A7 II / A7R II to switch from autofocus to manual focus and back?
Although this can be done via the (Android) configuration app, it is best to assign a Custom Button to do this. Choose Menu > Custom Settings (Gear Icon) > 7 > Custom Key Settings and assign AF/MF Ctrl Toggle to a button. FM member d-intrigue suggested using the Center Button whilst others prefer to use the AF/MF button.
The Techart PRO has a Parking feature which determines what the adapter does when switching from AF to MF mode:
To implement this, set the aperture on the camera to the desired value, take a picture, then set the aperture on the camera back to F2.
What is the heaviest lens that can be used with the Techart PRO?
According to the Techart PRO FAQ, the adapter can support lenses "as heavy as 700g". However, multiple FM members have reported success with much heavier lenses as long as the lens is supported firmly with one hand. In other words, instead of holding the camera and allowing the TAP to move the lens back and forward, one holds the lens so that the TAP moves the camera body back and forward.
Does the Techart PRO provide autofocus only with Leica M lenses?
No, other manual focus lenses with a longer flange distance (such as legacy SLR lenses) can also be auto-focused by inserting the appropriate M-mount adapter between the lens and the Techart PRO. For example, Contax C/Y or Olympus OM lenses can gain autofocus by adding a C/Y->M or OM->M adapter respectively.
Where do I buy the adapters for non-Leica M lenses?
Techart sell a wide range of Leicaist brand adapters in their store. However, the same Leicaist adapters can be purchased at lower prices on eBay.
FM members have reported varying degrees of success with other inexpensive XX->M adapters. In order for it not to interfere with the protruding motor of the Techart PRO, the adapter needs to be quite narrow at the M-bayonet end. The Leicaist adapters are tapered to achieve this.
Which non-Leicaist XX->M adapters do work with the Techart PRO?
According to posts in the this thread the following adapters have been reported to work with the TAP.
Canon FD
Contax C/Y
Hexanon AR
Leica R
Minolta MD
M42
Nikon F
Olympus OM
Pentax K
How do I attach the Techart PRO and lens?
Can I use the Techart PRO with an L-bracket?
Various FM members have reported incompatibility with the TAP and certain L-brackets. The following L-brackets are said not to interfere with the TAP:
Does SteadyShot (IBIS) work with the Techart PRO?
Yes. There are two ways to approach this:
How do I update the firmware?
The Techart PRO firmware is updated via Bluetooth using a mobile phone app.
How do I configure the focal length of the lens so it is correctly recorded in the EXIF data?
If the Techart PRO is used as shipped from the factory, a focal length of 15mm will be recorded in the EXIF. The Techart PRO can store up to ten focal lengths, with the default settings as follows.
To change the focal length to be recorded in the EXIF:
Note that the default setting F32 for a 135mm lens switches the Techart PRO into Manual Focus mode. There seems to be general agreement amongst FM members that this was a poor choice by the Techart engineers. Firstly, because alternating between AF and MF is best achieved by setting a Custom Button on the camera for AF/MF Toggle. Secondly, because AF is just as desirable for 135mm lenses as for other focal lengths. However, this default setting for the 135mm focal length can be modified via the LM-EA7-CONFIG app.
How do I set focal lengths other than the default ones listed above?
The default focal lengths can be modified via Bluetooth using an Android mobile phone app. (Note: Currently there is no iOS version of this Configuration app.).
Why does the EXIF data always show F2 even though I set a different maximum aperture with the LM-EA7-CONFIG app?
The EXIF will show F2 no matter what maximum aperture you have set via the config app. Fred Miranda asked the Techart people about this and they explained that, although they originally intended for the aperture value to be recorded into the EXIF via the app, they couldn't get it to work properly, so that functionality is currently blocked.
Why are my pictures overexposed when I set the aperture on the camera to a value other than F2?
When a legacy lens is attached via a dumb adapter the aperture value in the EVF on the LCD shows as "F--", because there is no electronic communication between the lens and the adapter. Correct exposure is then achieved by setting the camera to either A or M mode and using either a fixed ISO or ISO Auto.
However, in order to provide autofocus via Sony's 3rd party PDAF protocol, the Techart PRO emulates a Sony LA-EA3 adapter, in essence "pretending" to be an E-mount lens. The Techart engineers have chosen to emulate a 40mm SAM lens, probably because no such lens exists. Unlike a real A-mount lens whose aperture can be controlled electronically, the aperture on a legacy lens must be set manually. But the TAP still has to to provide an aperture value and F2 was the value chosen. Consequently, no matter what aperture is set manually on the lens, the TAP has been designed to give the correct exposure only when the aperture on the camera is set to F2. If the aperture on the camera is set, for example, to F2.8 then the camera increases the exposure to compensate and the picture will be one stop overexposed.
However, there is a way of circumventing this restriction, which is explained in the next topic.
Is there a way that I can have the actual aperture recorded in the EXIF?
FM member joe256 has reported a method of recording an aperture value (from F2 to F8) in the EXIF, whilst still exposing correctly:
...Show more →
I only use adapted lenses, no native AF lenses. It's on the camera pretty much all the time, and haven't noticed any undue battery drain. Then again, I don't expect mirrorless cameras to act like DSLRs when it comes to batteries; I rotate 3 of them.
The firmware is still somewhat buggy, occasionally gets confused, requiring a power-down, or even unmounting/remounting the adapter. Currently using rev 3.
I find longer focal lengths require some manual focus assistance but once you're somewhat within the range (this is hard to quantify/describe) the adapter will lock focus pretty quickly. Under certain lighting conditions it's necessary to focus at a wider aperture, then stop down. But if there is good light it will focus quickly even stopped down.
Tested it with many M lenses including the 35/1.4 ZM (which is an unbelievable optic) but mostly use it with C/Y lenses: 28/2.8, 35/2.8, 50/1.7, 35-70/3.4, 135/2.8, 80-200/4.
I think of it as a 'focus confirmation' adapter, if that makes sense, for those who have adapted lenses in the past using chipped adapters with DSLRs. Except, it actually *does* confirm accurate focus, and with AF, of course.
Being able to absolutely nail focus with normal viewing (i.e., without requiring peaking or focus assist magnification) is a real game-changer.
Having a built-in variable extension tube is super-cool, as well.
It's not perfect by any means but I'm more than happy with it. Someone who expects it to work as quickly and seamlessly as native AF lenses might be disappointed, but anyone who has experimented with adapted lenses should be very, very pleased.
I think none of the Sony On-Sensor Phase Detect AF points are "cross-type" and therefore only capable of detecting "vertical" contrast (with the camera in landscape orientation).
I am unsure of the Contrast Detect algorithm, but it's likely that it's reading row by row, left to right so it also is only detecting vertical contrast - but i haven't seen any details on that algo.
That could explain why battery drainage is not consistent and why I never found any drainage when inserting a fresh changed battery.
Alternately, if you have been using the camera and turn it off, drainage will occur UNLESS you remove the battery and re-insert it.
Somehow, physically removing the battery and re-insterting it completely cuts the connection with the adapter when the camera is in "off" position.
It's not customer service as some of us have come to expect. But I factor it in to my expectations. I've ordered a TechArt and am looking forward to it. But will they be around to provide service and upgrades in a few years, and will they be responsive to 'civilians' like you and me? Maybe; but I'm not relying on it.
EDIT. Bite my tongue! They replied in this thread! Well done TechArt!
• Lenses where the reach of the adapter's helicoid isn't large enough, so pre-focusing is necessary.
• Special lenses, e.g. with floating elements that need to be in the right position, also require pre-focusing.
• Extreme close focus, using the adapter's helicoid to achieve closer distances than possible with a rangefinder camera doesn't require pre-focusing but simply turning the M lens focus to closest distance.
f/2.0 = 0, f/2.8 = -1, f/4.0 = -2, f/5.6 = -3, and f/8.0 = - 4 . F/8.0 has to be done in the menu while the first three can be done on the top dial or the menu. You can also interpolate. F/11 @ -5 exposes correctly and puts the aperture in the EXIF but it resets the EXIF focal length to 15mm unless you remap it via the Android app.
If you are new to TAP, note the difference between setting the f/stop set on the lens and setting it on the camera.
ADDED: If you change the exposure compensation by the menu, it resets to 0 when the camera is turned off.
Fantastic! Te manual that should have been! Thanks!
seanj wrote
That's great! I sure wish we didn't have to learn these things through trial and error or reading through 40 - 50 pages of a thread on the topic.What is the Techart PRO?
The Techart PRO adapter (abbreviated as "TAP") is an autofocus adapter for manual focus camera lenses when mounted on certain Sony mirrorless cameras. According to the Techart PRO website:
Earlier quote
[The TAP] is basically a lens adapter with a motor and a printed circuit board, allowing the camera to measure the focus and communicate with the motor, [which] will move the lens closer or further away from the camera sensor to reach the focal point. The principle is similar to the Contax AX camera in that the flange distance is adjusted to reach the focus. The maximum z-shift is 4.5mm which is sufficient to cover the focusing distance for most of the lenses. And the optical performance will NOT be affected for unit focusing lenses.- Leica M Lens to Sony E-Mount Camera
- Optimized for Use with A7 II & A7R II
- Shifts Lens up to 4.5mm for Autofocus
- Supports PDAF with AF-S &
FM member d-intrigue provided a realistic assessment of the Techart PRO:
Can the Techart PRO be used with any Sony mirrorless camera?
The Techart PRO has been designed to provide optimum performance with Sony cameras that support 3rd party PDAF (Phase Detection Auto Focus):
- Sony A7 II
- Sony A7R II
- Sony A6300
Techart do not recommend its use with CDAF-only cameras (Sony A7, A7R, A7S, etc) and a number of FM members have reported poor performance with these cameras.
Which autofocus features does the Techart PRO support?
- Focus Mode: AF-S, AF-C
- Focus Area: Wide, Center, Flexible Spot (S/M/L
- Smile/Face Detection
Eye AF is not currently supported.
Why does the Techart PRO does not autofocus with my Sony A7 II / A7R II / A6300 camera?
The Techart PRO relies on PDAF (Phase Detection Auto Focus). Check Menu > Custom Settings (Gear Icon) > 7 > AF System and see that Phase Detection AF is selected.
Why is my Techart PRO having difficulty finding focus?
FM member GMPhotography offered a useful tip:
FM member ecarlino suggested the reason for this:
FM member k-h.a.w offered a tip for focusing fast lenses more accurately:
Why does the Techart PRO drain my battery so quickly?
The excessive battery usage is a known issue/bug. Fred Miranda suggested [https://www.fredmiranda.com/testforum/topic/1445543/43#13718779]a method to stop battery drainage[/url]:
In a later post Fred elaborated:
Why don't the Techart people answer email messages promptly?
FM member DavidBM provided a credible explanation:
How does the Techart PRO affect image quality?
For unit focusing lenses (i.e. those in which the entire optical assembly moves back and forward as the focusing ring is turned), the TAP does not affect image quality. For lenses with a floating element (FLE) design (i.e. the distance between lens groups is adjusted as the lens is focused in order to improve performance at close range), the TAP will have an effect on image quality. In this case, if using the lens at close distances, it will be preferable to pre-focus manually before allowing the Techart PRO to achieve accurate focus.
FM member freaklikeme elaborates:
Using the TAP with floating element lenses is discussed at length in this thread.
Will the Techart PRO autofocus over the full focusing range of the lens?
The autofocus range varies with the lens. The Techart PRO FAQ gives ranges from 6.5cm to Infinity for a 15mm lens up to 4.2m to Infinity for a 135mm lens when the focus ring on the lens is set to Infinity.
Must the focusing ring on the lens always be set at Infinity?
No, the focusing ring on the lens can be set according to the circumstances. FM member k-h.a.w explained in this post how he divides his lenses into groups:
How should I configure my A7 II / A7R II to switch from autofocus to manual focus and back?
Although this can be done via the (Android) configuration app, it is best to assign a Custom Button to do this. Choose Menu > Custom Settings (Gear Icon) > 7 > Custom Key Settings and assign AF/MF Ctrl Toggle to a button. FM member d-intrigue suggested using the Center Button whilst others prefer to use the AF/MF button.
The Techart PRO has a Parking feature which determines what the adapter does when switching from AF to MF mode:
- F36 parks the adapter at infinity focus
- F40 parks the adapter at closest focus
- F45 parks the adapter at the current focus
To implement this, set the aperture on the camera to the desired value, take a picture, then set the aperture on the camera back to F2.
What is the heaviest lens that can be used with the Techart PRO?
According to the Techart PRO FAQ, the adapter can support lenses "as heavy as 700g". However, multiple FM members have reported success with much heavier lenses as long as the lens is supported firmly with one hand. In other words, instead of holding the camera and allowing the TAP to move the lens back and forward, one holds the lens so that the TAP moves the camera body back and forward.
Does the Techart PRO provide autofocus only with Leica M lenses?
No, other manual focus lenses with a longer flange distance (such as legacy SLR lenses) can also be auto-focused by inserting the appropriate M-mount adapter between the lens and the Techart PRO. For example, Contax C/Y or Olympus OM lenses can gain autofocus by adding a C/Y->M or OM->M adapter respectively.
Where do I buy the adapters for non-Leica M lenses?
Techart sell a wide range of Leicaist brand adapters in their store. However, the same Leicaist adapters can be purchased at lower prices on eBay.
FM members have reported varying degrees of success with other inexpensive XX->M adapters. In order for it not to interfere with the protruding motor of the Techart PRO, the adapter needs to be quite narrow at the M-bayonet end. The Leicaist adapters are tapered to achieve this.
Which non-Leicaist XX->M adapters do work with the Techart PRO?
According to posts in the this thread the following adapters have been reported to work with the TAP.
Canon FD
Contax C/Y
- K&F CY->M Concept adapter
- Fotodiox CY->M adapter
Hexanon AR
Leica R
- Fotodiox LR->M adapter
- Novoflex LEM/LER adapter
Minolta MD
- Fotodiox MD->M adapter
- Fotasy MD->M adapter
M42
Nikon F
- K&F Nikon F->M Concept adapter
Olympus OM
- K&F Concept OM->M adapter
Pentax K
How do I attach the Techart PRO and lens?
- Turn off the camera and remove the currently mounted lens.
- Align the white dot on the Techart PRO with the white dot on the camera's lens mount and rotate the adapter clockwise until it locks into place.
- If you are using a legacy SLR lens, attach the XX->M adapter.
- Align the red dot on the M-mount lens (or on the XX->M adapter) with the red dot on the Techart PRO and rotate the lens (or adapted SLR lens) clockwise until it locks.
- Turn on the camera.
- Set the aperture on the camera body to F2.
- Set the aperture on the lens to the desired working aperture.
Can I use the Techart PRO with an L-bracket?
Various FM members have reported incompatibility with the TAP and certain L-brackets. The following L-brackets are said not to interfere with the TAP:
- L-bracket for Sony A7II / A7RII (USD50.00 from the Techart Store)
- RSS L-bracket
- LB-A7M2 L-bracket on eBay
- Neewer NW-A7M2 L-bracket on eBay
- A7IIL L-bracket on eBay
Does SteadyShot (IBIS) work with the Techart PRO?
Yes. There are two ways to approach this:
- Configure either three Custom Buttons (or, alternatively, three Function Button options) for SteadyShot Adjust (Auto/Manual), SteadyShot (On/Off), and SteadyS. Focal Len. With SteadyShot (On) and SteadyShot Adjust (Manual), you can then use SteadyS. Focal Len. to set a value from 8mm to 1000mm.
- Set SteadyShot Adjust to Auto and set the correct focal length to be recorded by the Techart PRO as explained later in this FAQ.
How do I update the firmware?
The Techart PRO firmware is updated via Bluetooth using a mobile phone app.
- Download and install the Firmware Update app using the links on the Techart Downloads page for iOS or Android.
- Ensure that both the phone and camera batteries are fully charged.
- Make sure the Auto-Lock of the phone is set to Never (iOS) or Sleep is set to 30 minutes (Android).
- Attach the Techart PRO adapter to the camera body (see above).
- Turn on the camera.
- Set the aperture on the camera body to F90 and take a picture.
- Turn the camera off.
- Launch the Techart Update app.
- Select the firmware version from the list.
- Press Update.
- Wait for the update to complete (approximately 10 minutes).
- When the firmware update success message appears, wait for at least one minute before turning the camera back on.
- You can check that the firmware has updated correctly by accessing Menu > Setup (Toolbox icon) > 6 > Version. The Techart PRO firmware version is displayed under Lens.
- Reset the Auto-Lock or Sleep setting on the phone.
How do I configure the focal length of the lens so it is correctly recorded in the EXIF data?
If the Techart PRO is used as shipped from the factory, a focal length of 15mm will be recorded in the EXIF. The Techart PRO can store up to ten focal lengths, with the default settings as follows.
- F11: 15mm
- F13: 18mm
- F14: 21mm
- F16: 24mm
- F18: 25mm
- F20: 28mm
- F22: 35mm
- F25: 50mm
- F29: 90mm
- F32: 135mm (MF only)
To change the focal length to be recorded in the EXIF:
- After switching lenses, turn on the camera.
- Set the aperture on the camera body to the corresponding aperture (listed above) for the desired focal length (e.g. F22 for a 28mm lens).
- Release the shutter (i.e. take a picture)
- Set the aperture on the camera body back to F2.
- Set the aperture on the lens to the desired working aperture.
Note that the default setting F32 for a 135mm lens switches the Techart PRO into Manual Focus mode. There seems to be general agreement amongst FM members that this was a poor choice by the Techart engineers. Firstly, because alternating between AF and MF is best achieved by setting a Custom Button on the camera for AF/MF Toggle. Secondly, because AF is just as desirable for 135mm lenses as for other focal lengths. However, this default setting for the 135mm focal length can be modified via the LM-EA7-CONFIG app.
How do I set focal lengths other than the default ones listed above?
The default focal lengths can be modified via Bluetooth using an Android mobile phone app. (Note: Currently there is no iOS version of this Configuration app.).
- Ensure that both the phone and camera batteries are fully charged.
- Download the Android APP for data settings (LM-EA7-Config.apk) from the Techart Downloads page to your Android phone.
- Install the LM-EA7-CONFIG app.
- Set the aperture on the camera body to F90 and take a picture.
- Turn the camera off.
- On the phone, go to Settings and in Display preferences set it to sleep after 10 (or 30) minutes of activity (so the display doesn't turn off during the update).
- Still in Settings, open the Bluetooth preferences. The LM-EA7 (i.e. the Techart PRO adapter) should be listed as an available device.
- Launch the LM-EA7-CONFIG app.
- The configuration app opens with a scrollable list of apertures, enabling you to change the focal length, parking behavior, and focus mode for up to ten lenses.
- Modify the default settings as desired and press CONFIG.
- When the configuration info has been successfully updated, turn the camera back on and set the aperture on the camera body back to F2.
- Test that it has worked by setting the aperture on the camera body to invoke a different focal length then take a picture.
- Set the aperture on the camera body back to F2, take a picture, and check the EXIF data.
- Reset the phone's Display settings if necessary.
Why does the EXIF data always show F2 even though I set a different maximum aperture with the LM-EA7-CONFIG app?
The EXIF will show F2 no matter what maximum aperture you have set via the config app. Fred Miranda asked the Techart people about this and they explained that, although they originally intended for the aperture value to be recorded into the EXIF via the app, they couldn't get it to work properly, so that functionality is currently blocked.
Why are my pictures overexposed when I set the aperture on the camera to a value other than F2?
When a legacy lens is attached via a dumb adapter the aperture value in the EVF on the LCD shows as "F--", because there is no electronic communication between the lens and the adapter. Correct exposure is then achieved by setting the camera to either A or M mode and using either a fixed ISO or ISO Auto.
However, in order to provide autofocus via Sony's 3rd party PDAF protocol, the Techart PRO emulates a Sony LA-EA3 adapter, in essence "pretending" to be an E-mount lens. The Techart engineers have chosen to emulate a 40mm SAM lens, probably because no such lens exists. Unlike a real A-mount lens whose aperture can be controlled electronically, the aperture on a legacy lens must be set manually. But the TAP still has to to provide an aperture value and F2 was the value chosen. Consequently, no matter what aperture is set manually on the lens, the TAP has been designed to give the correct exposure only when the aperture on the camera is set to F2. If the aperture on the camera is set, for example, to F2.8 then the camera increases the exposure to compensate and the picture will be one stop overexposed.
However, there is a way of circumventing this restriction, which is explained in the next topic.
Is there a way that I can have the actual aperture recorded in the EXIF?
FM member joe256 has reported a method of recording an aperture value (from F2 to F8) in the EXIF, whilst still exposing correctly:
...Show more →
Earlier quote
had mine for several months, posted about it hereI only use adapted lenses, no native AF lenses. It's on the camera pretty much all the time, and haven't noticed any undue battery drain. Then again, I don't expect mirrorless cameras to act like DSLRs when it comes to batteries; I rotate 3 of them.
The firmware is still somewhat buggy, occasionally gets confused, requiring a power-down, or even unmounting/remounting the adapter. Currently using rev 3.
I find longer focal lengths require some manual focus assistance but once you're somewhat within the range (this is hard to quantify/describe) the adapter will lock focus pretty quickly. Under certain lighting conditions it's necessary to focus at a wider aperture, then stop down. But if there is good light it will focus quickly even stopped down.
Tested it with many M lenses including the 35/1.4 ZM (which is an unbelievable optic) but mostly use it with C/Y lenses: 28/2.8, 35/2.8, 50/1.7, 35-70/3.4, 135/2.8, 80-200/4.
I think of it as a 'focus confirmation' adapter, if that makes sense, for those who have adapted lenses in the past using chipped adapters with DSLRs. Except, it actually *does* confirm accurate focus, and with AF, of course.
Being able to absolutely nail focus with normal viewing (i.e., without requiring peaking or focus assist magnification) is a real game-changer.
Having a built-in variable extension tube is super-cool, as well.
It's not perfect by any means but I'm more than happy with it. Someone who expects it to work as quickly and seamlessly as native AF lenses might be disappointed, but anyone who has experimented with adapted lenses should be very, very pleased.
Earlier quote
Remember focus is best achieved on vertical lines and not horizontal. Always look for a vertical contrast spot to get the best focus. This really is how Sonys work best.Earlier quote
The Nikon Phase-Detect module with 51 AF points has 15 points that are "cross-type sensors" to be able to detect contrast in both vertical and horizontal lines. I believe these are concentrated in the center of the frame.I think none of the Sony On-Sensor Phase Detect AF points are "cross-type" and therefore only capable of detecting "vertical" contrast (with the camera in landscape orientation).
I am unsure of the Contrast Detect algorithm, but it's likely that it's reading row by row, left to right so it also is only detecting vertical contrast - but i haven't seen any details on that algo.
Earlier quote
For shooting a fast lens, like f/1.2 or f/1.4, wide open I use AF-C and Flexible Spot: S and give it plenty of time (holding the shutter button halfway down) to focus precisely. On the A7r.2 I use IBIS and have selected Phase Detection AF and Phase Detect. Area ON.Earlier quote
Once you store your camera with TAP connected, just remove the battery and insert it back in. I have not found any drainage after doing this for a few days.That could explain why battery drainage is not consistent and why I never found any drainage when inserting a fresh changed battery.
Earlier quote
If you put a fresh battery and turn the camera off, there will be no drainage.Alternately, if you have been using the camera and turn it off, drainage will occur UNLESS you remove the battery and re-insert it.
Somehow, physically removing the battery and re-insterting it completely cuts the connection with the adapter when the camera is in "off" position.
Earlier quote
My experience dealing with smaller companies in China and HK is that communication beyond the selling phase is patchy at best. I don't really blame them: they have few staff, and running close to the edge, and they need to find competent English speakers to deal with issues from folks like me that don't write Chinese.It's not customer service as some of us have come to expect. But I factor it in to my expectations. I've ordered a TechArt and am looking forward to it. But will they be around to provide service and upgrades in a few years, and will they be responsive to 'civilians' like you and me? Maybe; but I'm not relying on it.
EDIT. Bite my tongue! They replied in this thread! Well done TechArt!
Earlier quote
I'm not saying it will be particularly impactful for every shooting situation, or that every lens with an FLE will be impacted the same amount. FLEs are implemented differently. Some are like the Canon FD 85L or your Summicron 75, where the rear group remains static while the other groups move, or the Samyang TS 24/3.5, where the rear collection of groups move until about 3M when the front group also starts moving. Some are like the Touit 50 that moves multiple groups at different times in different directions. How tolerant all of those lenses are to extension tubes should vary.Earlier quote
• Normal to WA lenses, simply set the M lens to infinity, typically no pre-focusing required.• Lenses where the reach of the adapter's helicoid isn't large enough, so pre-focusing is necessary.
• Special lenses, e.g. with floating elements that need to be in the right position, also require pre-focusing.
• Extreme close focus, using the adapter's helicoid to achieve closer distances than possible with a rangefinder camera doesn't require pre-focusing but simply turning the M lens focus to closest distance.
Earlier quote
Learned something new (to me at least) about the TAP. You can put the f/stop set on the lens in the EXIF (2.0 - 8.0) in addition to the focal length AND maintain the correct exposure. You do this by using exposure compensation. Set the aperture on the camera the same as on the lens, then compensate accordingly by dial or menu:f/2.0 = 0, f/2.8 = -1, f/4.0 = -2, f/5.6 = -3, and f/8.0 = - 4 . F/8.0 has to be done in the menu while the first three can be done on the top dial or the menu. You can also interpolate. F/11 @ -5 exposes correctly and puts the aperture in the EXIF but it resets the EXIF focal length to 15mm unless you remap it via the Android app.
If you are new to TAP, note the difference between setting the f/stop set on the lens and setting it on the camera.
ADDED: If you change the exposure compensation by the menu, it resets to 0 when the camera is turned off.
Fantastic! Te manual that should have been! Thanks!
Sep 27, 2016 at 03:04 AM
p.62 #7Techart PRO AF adapter now In Stock!
teh_rebel wrote:
Finally got a EF to M adapter that works with TechArt to use with my Rokkor 58/1.2 EF Converted .. works nicely. Slight glow wide open but useable. Only took a few test shots around the room since its already dark.
Great shots! Really looking forward converting mine (back to original from A-mount) so I can use it with the TAP.
Question: What is the closest focusing distance when setting the lens at infinity? Does this combo focus in normal range, or do you have to prefocus this lens to get shots at say 1,5 meters?
Finally got a EF to M adapter that works with TechArt to use with my Rokkor 58/1.2 EF Converted .. works nicely. Slight glow wide open but useable. Only took a few test shots around the room since its already dark.
Great shots! Really looking forward converting mine (back to original from A-mount) so I can use it with the TAP.
Question: What is the closest focusing distance when setting the lens at infinity? Does this combo focus in normal range, or do you have to prefocus this lens to get shots at say 1,5 meters?
Sep 27, 2016 at 03:40 AM
p.62 #8Techart PRO AF adapter now In Stock!
Corrected. Thank you!
k-h.a.w wrote:
Many thanks genji for the excellent first draft. Much appreciated.
A couple suggestions.
* List A6300 initially as well as compatible.
* The TAP supports 3-axis IBIS (according to their website), namely pitch, yaw, and roll.
For X- and Y-corrections to work it would need focus distance in addition to focal length.
Thanks again, K-H.
k-h.a.w wrote:
Many thanks genji for the excellent first draft. Much appreciated.
A couple suggestions.
* List A6300 initially as well as compatible.
* The TAP supports 3-axis IBIS (according to their website), namely pitch, yaw, and roll.
For X- and Y-corrections to work it would need focus distance in addition to focal length.
Thanks again, K-H.
Sep 27, 2016 at 04:14 AM
p.62 #9Techart PRO AF adapter now In Stock!
Thanks. The same questions were being asked multiple times by members who were understandably reluctant to wade through 60 pages in the hope of finding an answer.
DavidBM wrote:
This might help. Fred asked earlier in the thread if someone would volunteer to do an FAQ and I had some spare time on my hands. Any corrections or suggestions for additional FAQ topics are welcome!
What is the Techart PRO?
The Techart PRO adapter (abbreviated as "TAP") is an autofocus adapter for manual focus camera lenses when mounted on certain Sony mirrorless cameras. According to the Techart PRO website:
What are the main features of the Techart PRO?
FM member d-intrigue provided a realistic assessment of the Techart PRO:
I only use adapted lenses, no native AF lenses. It's on the camera pretty much all the time, and haven't noticed any undue battery drain. Then again, I don't expect mirrorless cameras to act like DSLRs when it comes to batteries; I rotate 3 of them.
The firmware is still somewhat buggy, occasionally gets confused, requiring a power-down, or even unmounting/remounting the adapter. Currently using rev 3.
I find longer focal lengths require some manual focus assistance but once you're somewhat within the range (this is hard to quantify/describe) the adapter will lock focus pretty quickly. Under certain lighting conditions it's necessary to focus at a wider aperture, then stop down. But if there is good light it will focus quickly even stopped down.
Tested it with many M lenses including the 35/1.4 ZM (which is an unbelievable optic) but mostly use it with C/Y lenses: 28/2.8, 35/2.8, 50/1.7, 35-70/3.4, 135/2.8, 80-200/4.
I think of it as a 'focus confirmation' adapter, if that makes sense, for those who have adapted lenses in the past using chipped adapters with DSLRs. Except, it actually *does* confirm accurate focus, and with AF, of course.
Being able to absolutely nail focus with normal viewing (i.e., without requiring peaking or focus assist magnification) is a real game-changer.
Having a built-in variable extension tube is super-cool, as well.
It's not perfect by any means but I'm more than happy with it. Someone who expects it to work as quickly and seamlessly as native AF lenses might be disappointed, but anyone who has experimented with adapted lenses should be very, very pleased.Can the Techart PRO be used with any Sony mirrorless camera?
The Techart PRO has been designed to provide optimum performance with Sony cameras that support 3rd party PDAF (Phase Detection Auto Focus):
Techart do not recommend its use with CDAF-only cameras (Sony A7, A7R, A7S, etc) and a number of FM members have reported poor performance with these cameras.
Which autofocus features does the Techart PRO support?
Eye AF is not currently supported.
Why does the Techart PRO does not autofocus with my Sony A7 II / A7R II / A6300 camera?
The Techart PRO relies on PDAF (Phase Detection Auto Focus). Check Menu > Custom Settings (Gear Icon) > 7 > AF System and see that Phase Detection AF is selected.
Why is my Techart PRO having difficulty finding focus?
FM member GMPhotography offered a useful tip:
FM member ecarlino suggested the reason for this:
I think none of the Sony On-Sensor Phase Detect AF points are "cross-type" and therefore only capable of detecting "vertical" contrast (with the camera in landscape orientation).
I am unsure of the Contrast Detect algorithm, but it's likely that it's reading row by row, left to right so it also is only detecting vertical contrast - but i haven't seen any details on that algo.FM member k-h.a.w offered a tip for focusing fast lenses more accurately:
Why does the Techart PRO drain my battery so quickly?
The excessive battery usage is a known issue/bug. Fred Miranda suggested [https://www.fredmiranda.com/testforum/topic/1445543/43#13718779]a method to stop battery drainage[/url]:
That could explain why battery drainage is not consistent and why I never found any drainage when inserting a fresh changed battery.In a later post Fred elaborated:
Alternately, if you have been using the camera and turn it off, drainage will occur UNLESS you remove the battery and re-insert it.
Somehow, physically removing the battery and re-insterting it completely cuts the connection with the adapter when the camera is in "off" position.Why don't the Techart people answer email messages promptly?
FM member DavidBM provided a credible explanation:
It's not customer service as some of us have come to expect. But I factor it in to my expectations. I've ordered a TechArt and am looking forward to it. But will they be around to provide service and upgrades in a few years, and will they be responsive to 'civilians' like you and me? Maybe; but I'm not relying on it.
EDIT. Bite my tongue! They replied in this thread! Well done TechArt!How does the Techart PRO affect image quality?
For unit focusing lenses (i.e. those in which the entire optical assembly moves back and forward as the focusing ring is turned), the TAP does not affect image quality. For lenses with a floating element (FLE) design (i.e. the distance between lens groups is adjusted as the lens is focused in order to improve performance at close range), the TAP will have an effect on image quality. In this case, if using the lens at close distances, it will be preferable to pre-focus manually before allowing the Techart PRO to achieve accurate focus.
FM member freaklikeme elaborates:
Using the TAP with floating element lenses is discussed at length in this thread.
Will the Techart PRO autofocus over the full focusing range of the lens?
The autofocus range varies with the lens. The Techart PRO FAQ gives ranges from 6.5cm to Infinity for a 15mm lens up to 4.2m to Infinity for a 135mm lens when the focus ring on the lens is set to Infinity.
Must the focusing ring on the lens always be set at Infinity?
No, the focusing ring on the lens can be set according to the circumstances. FM member k-h.a.w explained in this post how he divides his lenses into groups:
• Lenses where the reach of the adapter's helicoid isn't large enough, so pre-focusing is necessary.
• Special lenses, e.g. with floating elements that need to be in the right position, also require pre-focusing.
• Extreme close focus, using the adapter's helicoid to achieve closer distances than possible with a rangefinder camera doesn't require pre-focusing but simply turning the M lens focus to closest distance.How should I configure my A7 II / A7R II to switch from autofocus to manual focus and back?
Although this can be done via the (Android) configuration app, it is best to assign a Custom Button to do this. Choose Menu > Custom Settings (Gear Icon) > 7 > Custom Key Settings and assign AF/MF Ctrl Toggle to a button. FM member d-intrigue suggested using the Center Button whilst others prefer to use the AF/MF button.
The Techart PRO has a Parking feature which determines what the adapter does when switching from AF to MF mode:
To implement this, set the aperture on the camera to the desired value, take a picture, then set the aperture on the camera back to F2.
What is the heaviest lens that can be used with the Techart PRO?
According to the Techart PRO FAQ, the adapter can support lenses "as heavy as 700g". However, multiple FM members have reported success with much heavier lenses as long as the lens is supported firmly with one hand. In other words, instead of holding the camera and allowing the TAP to move the lens back and forward, one holds the lens so that the TAP moves the camera body back and forward.
Does the Techart PRO provide autofocus only with Leica M lenses?
No, other manual focus lenses with a longer flange distance (such as legacy SLR lenses) can also be auto-focused by inserting the appropriate M-mount adapter between the lens and the Techart PRO. For example, Contax C/Y or Olympus OM lenses can gain autofocus by adding a C/Y->M or OM->M adapter respectively.
Where do I buy the adapters for non-Leica M lenses?
Techart sell a wide range of Leicaist brand adapters in their store. However, the same Leicaist adapters can be purchased at lower prices on eBay.
FM members have reported varying degrees of success with other inexpensive XX->M adapters. In order for it not to interfere with the protruding motor of the Techart PRO, the adapter needs to be quite narrow at the M-bayonet end. The Leicaist adapters are tapered to achieve this.
Which non-Leicaist XX->M adapters do work with the Techart PRO?
According to posts in the this thread the following adapters have been reported to work with the TAP.
Canon FD
Contax C/Y
Hexanon AR
Leica R
Minolta MD
M42
Nikon F
Olympus OM
Pentax K
How do I attach the Techart PRO and lens?
Can I use the Techart PRO with an L-bracket?
Various FM members have reported incompatibility with the TAP and certain L-brackets. The following L-brackets are said not to interfere with the TAP:
Does SteadyShot (IBIS) work with the Techart PRO?
Yes. There are two ways to approach this:
How do I update the firmware?
The Techart PRO firmware is updated via Bluetooth using a mobile phone app.
How do I configure the focal length of the lens so it is correctly recorded in the EXIF data?
If the Techart PRO is used as shipped from the factory, a focal length of 15mm will be recorded in the EXIF. The Techart PRO can store up to ten focal lengths, with the default settings as follows.
To change the focal length to be recorded in the EXIF:
Note that the default setting F32 for a 135mm lens switches the Techart PRO into Manual Focus mode. There seems to be general agreement amongst FM members that this was a poor choice by the Techart engineers. Firstly, because alternating between AF and MF is best achieved by setting a Custom Button on the camera for AF/MF Toggle. Secondly, because AF is just as desirable for 135mm lenses as for other focal lengths. However, this default setting for the 135mm focal length can be modified via the LM-EA7-CONFIG app.
How do I set focal lengths other than the default ones listed above?
The default focal lengths can be modified via Bluetooth using an Android mobile phone app. (Note: Currently there is no iOS version of this Configuration app.).
Why does the EXIF data always show F2 even though I set a different maximum aperture with the LM-EA7-CONFIG app?
The EXIF will show F2 no matter what maximum aperture you have set via the config app. Fred Miranda asked the Techart people about this and they explained that, although they originally intended for the aperture value to be recorded into the EXIF via the app, they couldn't get it to work properly, so that functionality is currently blocked.
Why are my pictures overexposed when I set the aperture on the camera to a value other than F2?
When a legacy lens is attached via a dumb adapter the aperture value in the EVF on the LCD shows as "F--", because there is no electronic communication between the lens and the adapter. Correct exposure is then achieved by setting the camera to either A or M mode and using either a fixed ISO or ISO Auto.
However, in order to provide autofocus via Sony's 3rd party PDAF protocol, the Techart PRO emulates a Sony LA-EA3 adapter, in essence "pretending" to be an E-mount lens. The Techart engineers have chosen to emulate a 40mm SAM lens, probably because no such lens exists. Unlike a real A-mount lens whose aperture can be controlled electronically, the aperture on a legacy lens must be set manually. But the TAP still has to to provide an aperture value and F2 was the value chosen. Consequently, no matter what aperture is set manually on the lens, the TAP has been designed to give the correct exposure only when the aperture on the camera is set to F2. If the aperture on the camera is set, for example, to F2.8 then the camera increases the exposure to compensate and the picture will be one stop overexposed.
However, there is a way of circumventing this restriction, which is explained in the next topic.
Is there a way that I can have the actual aperture recorded in the EXIF?
FM member joe256 has reported a method of recording an aperture value (from F2 to F8) in the EXIF, whilst still exposing correctly:
f/2.0 = 0, f/2.8 = -1, f/4.0 = -2, f/5.6 = -3, and f/8.0 = - 4 . F/8.0 has to be done in the menu while the first three can be done on the top dial or the menu. You can also interpolate. F/11 @ -5 exposes correctly and puts the aperture in the EXIF but it resets the EXIF focal length to 15mm unless you remap it via the Android app.
If you are new to TAP, note the difference between setting the f/stop set on the lens and setting it on the camera.
ADDED: If you change the exposure compensation by the menu, it resets to 0 when the camera is turned off.Fantastic! Te manual that should have been! Thanks!
DavidBM wrote:
genji wrote
seanj wrote
That's great! I sure wish we didn't have to learn these things through trial and error or reading through 40 - 50 pages of a thread on the topic.What is the Techart PRO?
The Techart PRO adapter (abbreviated as "TAP") is an autofocus adapter for manual focus camera lenses when mounted on certain Sony mirrorless cameras. According to the Techart PRO website:
Earlier quote
[The TAP] is basically a lens adapter with a motor and a printed circuit board, allowing the camera to measure the focus and communicate with the motor, [which] will move the lens closer or further away from the camera sensor to reach the focal point. The principle is similar to the Contax AX camera in that the flange distance is adjusted to reach the focus. The maximum z-shift is 4.5mm which is sufficient to cover the focusing distance for most of the lenses. And the optical performance will NOT be affected for unit focusing lenses.- Leica M Lens to Sony E-Mount Camera
- Optimized for Use with A7 II & A7R II
- Shifts Lens up to 4.5mm for Autofocus
- Supports PDAF with AF-S & AF-C Modes
- Improves Close Focusing Ability
- Bluetooth 4.0 Connectivity & Mobile App
- Stores 10 Sets of Lens Data
- Compatible with 5-Axis Stabilization
- Drives Lenses Weighing up to 700g
FM member d-intrigue provided a realistic assessment of the Techart PRO:
Earlier quote
had mine for several months, posted about it hereI only use adapted lenses, no native AF lenses. It's on the camera pretty much all the time, and haven't noticed any undue battery drain. Then again, I don't expect mirrorless cameras to act like DSLRs when it comes to batteries; I rotate 3 of them.
The firmware is still somewhat buggy, occasionally gets confused, requiring a power-down, or even unmounting/remounting the adapter. Currently using rev 3.
I find longer focal lengths require some manual focus assistance but once you're somewhat within the range (this is hard to quantify/describe) the adapter will lock focus pretty quickly. Under certain lighting conditions it's necessary to focus at a wider aperture, then stop down. But if there is good light it will focus quickly even stopped down.
Tested it with many M lenses including the 35/1.4 ZM (which is an unbelievable optic) but mostly use it with C/Y lenses: 28/2.8, 35/2.8, 50/1.7, 35-70/3.4, 135/2.8, 80-200/4.
I think of it as a 'focus confirmation' adapter, if that makes sense, for those who have adapted lenses in the past using chipped adapters with DSLRs. Except, it actually *does* confirm accurate focus, and with AF, of course.
Being able to absolutely nail focus with normal viewing (i.e., without requiring peaking or focus assist magnification) is a real game-changer.
Having a built-in variable extension tube is super-cool, as well.
It's not perfect by any means but I'm more than happy with it. Someone who expects it to work as quickly and seamlessly as native AF lenses might be disappointed, but anyone who has experimented with adapted lenses should be very, very pleased.
The Techart PRO has been designed to provide optimum performance with Sony cameras that support 3rd party PDAF (Phase Detection Auto Focus):
- Sony A7 II
- Sony A7R II
- Sony A6300
Techart do not recommend its use with CDAF-only cameras (Sony A7, A7R, A7S, etc) and a number of FM members have reported poor performance with these cameras.
Which autofocus features does the Techart PRO support?
- Focus Mode: AF-S, AF-C
- Focus Area: Wide, Center, Flexible Spot (S/M/L
- Smile/Face Detection
Eye AF is not currently supported.
Why does the Techart PRO does not autofocus with my Sony A7 II / A7R II / A6300 camera?
The Techart PRO relies on PDAF (Phase Detection Auto Focus). Check Menu > Custom Settings (Gear Icon) > 7 > AF System and see that Phase Detection AF is selected.
Why is my Techart PRO having difficulty finding focus?
FM member GMPhotography offered a useful tip:
Earlier quote
Remember focus is best achieved on vertical lines and not horizontal. Always look for a vertical contrast spot to get the best focus. This really is how Sonys work best.Earlier quote
The Nikon Phase-Detect module with 51 AF points has 15 points that are "cross-type sensors" to be able to detect contrast in both vertical and horizontal lines. I believe these are concentrated in the center of the frame.I think none of the Sony On-Sensor Phase Detect AF points are "cross-type" and therefore only capable of detecting "vertical" contrast (with the camera in landscape orientation).
I am unsure of the Contrast Detect algorithm, but it's likely that it's reading row by row, left to right so it also is only detecting vertical contrast - but i haven't seen any details on that algo.
Earlier quote
For shooting a fast lens, like f/1.2 or f/1.4, wide open I use AF-C and Flexible Spot: S and give it plenty of time (holding the shutter button halfway down) to focus precisely. On the A7r.2 I use IBIS and have selected Phase Detection AF and Phase Detect. Area ON.The excessive battery usage is a known issue/bug. Fred Miranda suggested [https://www.fredmiranda.com/testforum/topic/1445543/43#13718779]a method to stop battery drainage[/url]:
Earlier quote
Once you store your camera with TAP connected, just remove the battery and insert it back in. I have not found any drainage after doing this for a few days.That could explain why battery drainage is not consistent and why I never found any drainage when inserting a fresh changed battery.
Earlier quote
If you put a fresh battery and turn the camera off, there will be no drainage.Alternately, if you have been using the camera and turn it off, drainage will occur UNLESS you remove the battery and re-insert it.
Somehow, physically removing the battery and re-insterting it completely cuts the connection with the adapter when the camera is in "off" position.
FM member DavidBM provided a credible explanation:
Earlier quote
My experience dealing with smaller companies in China and HK is that communication beyond the selling phase is patchy at best. I don't really blame them: they have few staff, and running close to the edge, and they need to find competent English speakers to deal with issues from folks like me that don't write Chinese.It's not customer service as some of us have come to expect. But I factor it in to my expectations. I've ordered a TechArt and am looking forward to it. But will they be around to provide service and upgrades in a few years, and will they be responsive to 'civilians' like you and me? Maybe; but I'm not relying on it.
EDIT. Bite my tongue! They replied in this thread! Well done TechArt!
For unit focusing lenses (i.e. those in which the entire optical assembly moves back and forward as the focusing ring is turned), the TAP does not affect image quality. For lenses with a floating element (FLE) design (i.e. the distance between lens groups is adjusted as the lens is focused in order to improve performance at close range), the TAP will have an effect on image quality. In this case, if using the lens at close distances, it will be preferable to pre-focus manually before allowing the Techart PRO to achieve accurate focus.
FM member freaklikeme elaborates:
Earlier quote
I'm not saying it will be particularly impactful for every shooting situation, or that every lens with an FLE will be impacted the same amount. FLEs are implemented differently. Some are like the Canon FD 85L or your Summicron 75, where the rear group remains static while the other groups move, or the Samyang TS 24/3.5, where the rear collection of groups move until about 3M when the front group also starts moving. Some are like the Touit 50 that moves multiple groups at different times in different directions. How tolerant all of those lenses are to extension tubes should vary.Will the Techart PRO autofocus over the full focusing range of the lens?
The autofocus range varies with the lens. The Techart PRO FAQ gives ranges from 6.5cm to Infinity for a 15mm lens up to 4.2m to Infinity for a 135mm lens when the focus ring on the lens is set to Infinity.
Must the focusing ring on the lens always be set at Infinity?
No, the focusing ring on the lens can be set according to the circumstances. FM member k-h.a.w explained in this post how he divides his lenses into groups:
Earlier quote
• Normal to WA lenses, simply set the M lens to infinity, typically no pre-focusing required.• Lenses where the reach of the adapter's helicoid isn't large enough, so pre-focusing is necessary.
• Special lenses, e.g. with floating elements that need to be in the right position, also require pre-focusing.
• Extreme close focus, using the adapter's helicoid to achieve closer distances than possible with a rangefinder camera doesn't require pre-focusing but simply turning the M lens focus to closest distance.
Although this can be done via the (Android) configuration app, it is best to assign a Custom Button to do this. Choose Menu > Custom Settings (Gear Icon) > 7 > Custom Key Settings and assign AF/MF Ctrl Toggle to a button. FM member d-intrigue suggested using the Center Button whilst others prefer to use the AF/MF button.
The Techart PRO has a Parking feature which determines what the adapter does when switching from AF to MF mode:
- F36 parks the adapter at infinity focus
- F40 parks the adapter at closest focus
- F45 parks the adapter at the current focus
To implement this, set the aperture on the camera to the desired value, take a picture, then set the aperture on the camera back to F2.
What is the heaviest lens that can be used with the Techart PRO?
According to the Techart PRO FAQ, the adapter can support lenses "as heavy as 700g". However, multiple FM members have reported success with much heavier lenses as long as the lens is supported firmly with one hand. In other words, instead of holding the camera and allowing the TAP to move the lens back and forward, one holds the lens so that the TAP moves the camera body back and forward.
Does the Techart PRO provide autofocus only with Leica M lenses?
No, other manual focus lenses with a longer flange distance (such as legacy SLR lenses) can also be auto-focused by inserting the appropriate M-mount adapter between the lens and the Techart PRO. For example, Contax C/Y or Olympus OM lenses can gain autofocus by adding a C/Y->M or OM->M adapter respectively.
Where do I buy the adapters for non-Leica M lenses?
Techart sell a wide range of Leicaist brand adapters in their store. However, the same Leicaist adapters can be purchased at lower prices on eBay.
FM members have reported varying degrees of success with other inexpensive XX->M adapters. In order for it not to interfere with the protruding motor of the Techart PRO, the adapter needs to be quite narrow at the M-bayonet end. The Leicaist adapters are tapered to achieve this.
Which non-Leicaist XX->M adapters do work with the Techart PRO?
According to posts in the this thread the following adapters have been reported to work with the TAP.
Canon FD
Contax C/Y
- K&F CY->M Concept adapter
- Fotodiox CY->M adapter
Hexanon AR
Leica R
- Fotodiox LR->M adapter
- Novoflex LEM/LER adapter
Minolta MD
- Fotodiox MD->M adapter
- Fotasy MD->M adapter
M42
Nikon F
- K&F Nikon F->M Concept adapter
Olympus OM
- K&F Concept OM->M adapter
Pentax K
How do I attach the Techart PRO and lens?
- Turn off the camera and remove the currently mounted lens.
- Align the white dot on the Techart PRO with the white dot on the camera's lens mount and rotate the adapter clockwise until it locks into place.
- If you are using a legacy SLR lens, attach the XX->M adapter.
- Align the red dot on the M-mount lens (or on the XX->M adapter) with the red dot on the Techart PRO and rotate the lens (or adapted SLR lens) clockwise until it locks.
- Turn on the camera.
- Set the aperture on the camera body to F2.
- Set the aperture on the lens to the desired working aperture.
Can I use the Techart PRO with an L-bracket?
Various FM members have reported incompatibility with the TAP and certain L-brackets. The following L-brackets are said not to interfere with the TAP:
- L-bracket for Sony A7II / A7RII (USD50.00 from the Techart Store)
- RSS L-bracket
- LB-A7M2 L-bracket on eBay
- Neewer NW-A7M2 L-bracket on eBay
- A7IIL L-bracket on eBay
Does SteadyShot (IBIS) work with the Techart PRO?
Yes. There are two ways to approach this:
- Configure either three Custom Buttons (or, alternatively, three Function Button options) for SteadyShot Adjust (Auto/Manual), SteadyShot (On/Off), and SteadyS. Focal Len. With SteadyShot (On) and SteadyShot Adjust (Manual), you can then use SteadyS. Focal Len. to set a value from 8mm to 1000mm.
- Set SteadyShot Adjust to Auto and set the correct focal length to be recorded by the Techart PRO as explained later in this FAQ.
How do I update the firmware?
The Techart PRO firmware is updated via Bluetooth using a mobile phone app.
- Download and install the Firmware Update app using the links on the Techart Downloads page for iOS or Android.
- Ensure that both the phone and camera batteries are fully charged.
- Make sure the Auto-Lock of the phone is set to Never (iOS) or Sleep is set to 30 minutes (Android).
- Attach the Techart PRO adapter to the camera body (see above).
- Turn on the camera.
- Set the aperture on the camera body to F90 and take a picture.
- Turn the camera off.
- Launch the Techart Update app.
- Select the firmware version from the list.
- Press Update.
- Wait for the update to complete (approximately 10 minutes).
- When the firmware update success message appears, wait for at least one minute before turning the camera back on.
- You can check that the firmware has updated correctly by accessing Menu > Setup (Toolbox icon) > 6 > Version. The Techart PRO firmware version is displayed under Lens.
- Reset the Auto-Lock or Sleep setting on the phone.
How do I configure the focal length of the lens so it is correctly recorded in the EXIF data?
If the Techart PRO is used as shipped from the factory, a focal length of 15mm will be recorded in the EXIF. The Techart PRO can store up to ten focal lengths, with the default settings as follows.
- F11: 15mm
- F13: 18mm
- F14: 21mm
- F16: 24mm
- F18: 25mm
- F20: 28mm
- F22: 35mm
- F25: 50mm
- F29: 90mm
- F32: 135mm (MF only)
To change the focal length to be recorded in the EXIF:
- After switching lenses, turn on the camera.
- Set the aperture on the camera body to the corresponding aperture (listed above) for the desired focal length (e.g. F22 for a 28mm lens).
- Release the shutter (i.e. take a picture)
- Set the aperture on the camera body back to F2.
- Set the aperture on the lens to the desired working aperture.
Note that the default setting F32 for a 135mm lens switches the Techart PRO into Manual Focus mode. There seems to be general agreement amongst FM members that this was a poor choice by the Techart engineers. Firstly, because alternating between AF and MF is best achieved by setting a Custom Button on the camera for AF/MF Toggle. Secondly, because AF is just as desirable for 135mm lenses as for other focal lengths. However, this default setting for the 135mm focal length can be modified via the LM-EA7-CONFIG app.
How do I set focal lengths other than the default ones listed above?
The default focal lengths can be modified via Bluetooth using an Android mobile phone app. (Note: Currently there is no iOS version of this Configuration app.).
- Ensure that both the phone and camera batteries are fully charged.
- Download the Android APP for data settings (LM-EA7-Config.apk) from the Techart Downloads page to your Android phone.
- Install the LM-EA7-CONFIG app.
- Set the aperture on the camera body to F90 and take a picture.
- Turn the camera off.
- On the phone, go to Settings and in Display preferences set it to sleep after 10 (or 30) minutes of activity (so the display doesn't turn off during the update).
- Still in Settings, open the Bluetooth preferences. The LM-EA7 (i.e. the Techart PRO adapter) should be listed as an available device.
- Launch the LM-EA7-CONFIG app.
- The configuration app opens with a scrollable list of apertures, enabling you to change the focal length, parking behavior, and focus mode for up to ten lenses.
- Modify the default settings as desired and press CONFIG.
- When the configuration info has been successfully updated, turn the camera back on and set the aperture on the camera body back to F2.
- Test that it has worked by setting the aperture on the camera body to invoke a different focal length then take a picture.
- Set the aperture on the camera body back to F2, take a picture, and check the EXIF data.
- Reset the phone's Display settings if necessary.
Why does the EXIF data always show F2 even though I set a different maximum aperture with the LM-EA7-CONFIG app?
The EXIF will show F2 no matter what maximum aperture you have set via the config app. Fred Miranda asked the Techart people about this and they explained that, although they originally intended for the aperture value to be recorded into the EXIF via the app, they couldn't get it to work properly, so that functionality is currently blocked.
Why are my pictures overexposed when I set the aperture on the camera to a value other than F2?
When a legacy lens is attached via a dumb adapter the aperture value in the EVF on the LCD shows as "F--", because there is no electronic communication between the lens and the adapter. Correct exposure is then achieved by setting the camera to either A or M mode and using either a fixed ISO or ISO Auto.
However, in order to provide autofocus via Sony's 3rd party PDAF protocol, the Techart PRO emulates a Sony LA-EA3 adapter, in essence "pretending" to be an E-mount lens. The Techart engineers have chosen to emulate a 40mm SAM lens, probably because no such lens exists. Unlike a real A-mount lens whose aperture can be controlled electronically, the aperture on a legacy lens must be set manually. But the TAP still has to to provide an aperture value and F2 was the value chosen. Consequently, no matter what aperture is set manually on the lens, the TAP has been designed to give the correct exposure only when the aperture on the camera is set to F2. If the aperture on the camera is set, for example, to F2.8 then the camera increases the exposure to compensate and the picture will be one stop overexposed.
However, there is a way of circumventing this restriction, which is explained in the next topic.
Is there a way that I can have the actual aperture recorded in the EXIF?
FM member joe256 has reported a method of recording an aperture value (from F2 to F8) in the EXIF, whilst still exposing correctly:
Earlier quote
Learned something new (to me at least) about the TAP. You can put the f/stop set on the lens in the EXIF (2.0 - 8.0) in addition to the focal length AND maintain the correct exposure. You do this by using exposure compensation. Set the aperture on the camera the same as on the lens, then compensate accordingly by dial or menu:f/2.0 = 0, f/2.8 = -1, f/4.0 = -2, f/5.6 = -3, and f/8.0 = - 4 . F/8.0 has to be done in the menu while the first three can be done on the top dial or the menu. You can also interpolate. F/11 @ -5 exposes correctly and puts the aperture in the EXIF but it resets the EXIF focal length to 15mm unless you remap it via the Android app.
If you are new to TAP, note the difference between setting the f/stop set on the lens and setting it on the camera.
ADDED: If you change the exposure compensation by the menu, it resets to 0 when the camera is turned off.
Sep 27, 2016 at 04:22 AM
p.62 #10Techart PRO AF adapter now In Stock!
mortyb wrote:
Great shots! Really looking forward converting mine (back to original from A-mount) so I can use it with the TAP.
Question: What is the closest focusing distance when setting the lens at infinity? Does this combo focus in normal range, or do you have to prefocus this lens to get shots at say 1,5 meters?
Thanks! Didnt really test the closest focusing distance when at infinity, but this lens does require to pre-focus when you are closer to the subject. Pretty awesome to be able to AF the Rokkor
teh_rebel wrote
Finally got a EF to M adapter that works with TechArt to use with my Rokkor 58/1.2 EF Converted .. works nicely. Slight glow wide open but useable. Only took a few test shots around the room since its already dark.Question: What is the closest focusing distance when setting the lens at infinity? Does this combo focus in normal range, or do you have to prefocus this lens to get shots at say 1,5 meters?
Thanks! Didnt really test the closest focusing distance when at infinity, but this lens does require to pre-focus when you are closer to the subject. Pretty awesome to be able to AF the Rokkor
Sep 27, 2016 at 07:00 AM
p.62 #11Techart PRO AF adapter now In Stock!
Nice to have a PDF of that . Maybe Fred can put it somewhere for downloading reasons
Sep 27, 2016 at 08:21 AM
p.62 #12Techart PRO AF adapter now In Stock!
I agree, it's the manual we should have had. It would be nice to create a 'sticky'
Sep 27, 2016 at 08:52 AM
p.62 #13Techart PRO AF adapter now In Stock!
Great guide.
I'll add that The Leicaist Konica->M adapter works, as does the Fotasy M42->M and Fotodiox Pentax K-M.
I've also got a Canon FL lens, and a Fotasy Canon->M adapter on the way, so I'll post when they arrive.
I'll add that The Leicaist Konica->M adapter works, as does the Fotasy M42->M and Fotodiox Pentax K-M.
I've also got a Canon FL lens, and a Fotasy Canon->M adapter on the way, so I'll post when they arrive.
Sep 27, 2016 at 09:03 AM
p.62 #14Techart PRO AF adapter now In Stock!
GMPhotography wrote:
Nice to have a PDF of that . Maybe Fred can put it somewhere for downloading reasons
or maybe a link to a shared Google doc in the OP so that it can be updated easier when theres new info?
Nice to have a PDF of that . Maybe Fred can put it somewhere for downloading reasons
or maybe a link to a shared Google doc in the OP so that it can be updated easier when theres new info?
Sep 27, 2016 at 09:14 AM
p.62 #15Techart PRO AF adapter now In Stock!
Has the manufacture of the TAP made any statement that they can improve the battery consumption of the TAP?
Also, I hope they come out with a program for Apple, as I don't have any Android system that would work with the app to modify settings on the TAP.
Also, I hope they come out with a program for Apple, as I don't have any Android system that would work with the app to modify settings on the TAP.
Sep 27, 2016 at 11:00 AM
p.62 #16Techart PRO AF adapter now In Stock!
GMPhotography wrote:
Nice to have a PDF of that . Maybe Fred can put it somewhere for downloading reasons
I've written it using BBCODE but I can convert it to Markdown and then export a PDF.
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rji2goleez wrote:
I agree, it's the manual we should have had. It would be nice to create a 'sticky'
I suggested to Fred and he agreed that moving the post to the beginning of a new thread would make it easier to find the FAQ and simpler to maintain & update it.
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bluloo wrote:
Great guide.
I'll add that The Leicaist Konica->M adapter works, as does the Fotasy M42->M and Fotodiox Pentax K-M.
I've also got a Canon FL lens, and a Fotasy Canon->M adapter on the way, so I'll post when they arrive.
The current list is for non-Leicaist adapters that work with the TAP but your post made me realize it would be much better to have a list of all the adapters that work (including the Leicaist ones). So I'll do that. Thank you.
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teh_rebel wrote:
or maybe a link to a shared Google doc in the OP so that it can be updated easier when theres new info?
Probably a good idea to look at that once the new thread is up and running.
Nice to have a PDF of that . Maybe Fred can put it somewhere for downloading reasons
I've written it using BBCODE but I can convert it to Markdown and then export a PDF.
---------------------------------------------
rji2goleez wrote:
I agree, it's the manual we should have had. It would be nice to create a 'sticky'
I suggested to Fred and he agreed that moving the post to the beginning of a new thread would make it easier to find the FAQ and simpler to maintain & update it.
---------------------------------------------
bluloo wrote:
Great guide.
I'll add that The Leicaist Konica->M adapter works, as does the Fotasy M42->M and Fotodiox Pentax K-M.
I've also got a Canon FL lens, and a Fotasy Canon->M adapter on the way, so I'll post when they arrive.
The current list is for non-Leicaist adapters that work with the TAP but your post made me realize it would be much better to have a list of all the adapters that work (including the Leicaist ones). So I'll do that. Thank you.
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teh_rebel wrote:
or maybe a link to a shared Google doc in the OP so that it can be updated easier when theres new info?
Probably a good idea to look at that once the new thread is up and running.
Sep 27, 2016 at 04:06 PM
p.62 #17Techart PRO AF adapter now In Stock!
Late to the TAP party but I made it !
Sep 30, 2016 at 05:06 AM
p.62 #18Techart PRO AF adapter now In Stock!
It will be interesting to see if the TAP will still work when the Camera firmware will be completely redesigned or if they will have to redo the reverse engineering.
Edited on Sep 30, 2016 at 11:16 AM · View previous versions
Edited on Sep 30, 2016 at 11:16 AM · View previous versions
Sep 30, 2016 at 05:18 AM
p.62 #19Techart PRO AF adapter now In Stock!
strohscw wrote:
It will be interesting to see if the TAP still will still work when the Camera bios will be completely redesigned or if they will have to redo the reverse engineering.
Interesting thought. I would guess it depends upon how much programing they can do with it?
It will be interesting to see if the TAP still will still work when the Camera bios will be completely redesigned or if they will have to redo the reverse engineering.
Interesting thought. I would guess it depends upon how much programing they can do with it?
Sep 30, 2016 at 11:01 AM
p.62 #20Techart PRO AF adapter now In Stock!
jamato8 wrote:
Interesting thought. I would guess it depends upon how much programing they can do with it?
ill surely wont be quick to update the firmware (camera) if a new one is released
strohscw wrote
It will be interesting to see if the TAP still will still work when the Camera bios will be completely redesigned or if they will have to redo the reverse engineering.ill surely wont be quick to update the firmware (camera) if a new one is released
Sep 30, 2016 at 11:44 AM