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Archive 2016 · Techart PRO LM-EA7 FAQ

genji
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p.54 #1 · p.54 #1 · Techart PRO LM-EA7 FAQ

Fred Miranda wrote:
Well, I have the new TAP LM-EA9 adapter in hands and I really like what I see so far. I will start a new thread with more thoughts on it soon.
Most of the issues I had with the previous EA7 seem to be resolved. There will be no more wobble since there are actually 4 motors and the unit goes back and forward with the same amount of support. There is still noise when AF is working but it's way more tolerable now...meaning it's not high pitch. The new adapter is all metal and it feels more sturdy than...Show more →

Did you try it with the Leica 90AA, Fred?

Aug 04, 2022 at 04:29 PM

Fred Miranda
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p.54 #2 · p.54 #2 · Techart PRO LM-EA7 FAQ

genji wrote:
Did you try it with the Leica 90AA, Fred?

I have not but could give it a try today. The lens is compatible with the new EA9 since the weight is 500 grams.
Usually telephoto lenses on the tap require a pre-focus.

Aug 04, 2022 at 04:36 PM

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p.54 #3 · p.54 #3 · Techart PRO LM-EA7 FAQ

@genji,
I've tried the 90AA on the new LM-EA9 adapter and it works just fine. I was wondering if this FAQ could be slightly modified to the new adapter since most of the information here is still relevant. Perhaps I can copy and paste it to a new thread and only remove the unrelated information. Thoughts?

Aug 09, 2022 at 12:33 AM

rhawidantas
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p.54 #4 · p.54 #4 · Techart PRO LM-EA7 FAQ

I vote for copying and modifying the relevant information.

I prefer some separation of concerns related to different products. Makes it for a clearer and easier discussion.

Aug 09, 2022 at 03:47 AM

genji
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p.54 #5 · p.54 #5 · Techart PRO LM-EA7 FAQ

Fred Miranda wrote:
@genji@,
I've tried the 90AA on the new LM-EA9 adapter and it works just fine. I was wondering if this FAQ could be slightly modified to the new adapter since most of the information here is still relevant. Perhaps I can copy and paste it to a new thread and only remove the unrelated information. Thoughts?

Starting a new thread containing the relevant information from this thread (and then archiving this one) seems like the best course of action to me, Fred. As long as you don’t mind doing it! I’m still undecided as to whether I’ll get an LA-EA9 since the only lenses I’d be likely to use with it are the 90AA and possibly the Tele-Elmar-M 135 which is about the same weight. Forum member @DavidBM has preordered one from Techart and, once it arrives, I’ll be able to check it out the next time we meet for lunch or coffee.

Aug 09, 2022 at 04:06 AM

windhorse
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p.54 #6 · p.54 #6 · Techart PRO LM-EA7 FAQ

Do I understand right after reading this thread that the LM-EA7 will most likely not autofocus properly on my A7R II with the Leica Elmarit-R 28mm f2.8 mounted via an adapter, as this particular lens has a floating element?

Nov 16, 2022 at 04:01 PM

rji2goleez
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p.54 #7 · p.54 #7 · Techart PRO LM-EA7 FAQ

windhorse wrote:
Do I understand right after reading this thread that the LM-EA7 will most likely not autofocus properly on my A7R II with the Leica Elmarit-R 28mm f2.8 mounted via an adapter, as this particular lens has a floating element?

It's been a while since I owned both that lens and adapter but I could have sworn it worked just fine.

Nov 16, 2022 at 04:35 PM

windhorse
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p.54 #8 · p.54 #8 · Techart PRO LM-EA7 FAQ

Wow, that is good to know, even though I can hear you are not quite sure, thanks for mentioning this. It is a great lens but may not work so well for this particular application?

Meanwhile, I have come across the positive report in the following thread of using the Techart Pro adapter with a Leica lens (albeit a different one) with floating element.

https://www.l-camera-forum.com/topic/260021-autofocus-m-lenses-on-sony-a7r2-with-techart-pro-lm-ea7-adapter/

So seems like to focus this and similar lenses with floating element, you have to first do a ballpark manual focus, to get the lens with floating element in roughly the right position, THEN have the Techart Pro autofocus to get a precise result, right (or wrong)?

Nov 17, 2022 at 02:19 AM

MAubrey
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p.54 #9 · p.54 #9 · Techart PRO LM-EA7 FAQ

windhorse wrote:
Wow, that is good to know, even though I can hear you are not quite sure, thanks for mentioning this. It is a great lens but may not work so well for this particular application?

Meanwhile, I have come across the positive report in the following thread of using the Techart Pro adapter with a Leica lens (albeit a different one) with floating element.

https://www.l-camera-forum.com/topic/260021-autofocus-m-lenses-on-sony-a7r2-with-techart-pro-lm-ea7-adapter/

So seems like to focus this and similar lenses with floating element, you have to first do a ballpark manual focus, to get the lens with floating element in roughly the right position, THEN have the Techart Pro...Show more →

I use the adapter with a lens with floating element (ZM35/1.4). It works well even if I leave it at infinity, but there's more CA than usual. If I want best quality, I manual focus as effectively I can on my subject and then let the adapter find the best focus.

Nov 17, 2022 at 07:53 AM

windhorse
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p.54 #10 · p.54 #10 · Techart PRO LM-EA7 FAQ

Super 👍 sounds like the adapter is good at what is designed to do - despite being a bit wobbly.

MAubrey wrote:
I use the adapter with a lens with floating element (ZM35/1.4). It works well even if I leave it at infinity, but there's more CA than usual. If I want best quality, I manual focus as effectively I can on my subject and then let the adapter find the best focus.

Nov 17, 2022 at 10:15 AM

LightOfAeons
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p.54 #11 · p.54 #11 · Techart PRO LM-EA7 FAQ

Heyho,
I just got the A7c and want to try out the LM-EA7. Unfortunately the links to the Android software and new 7.0 firmware are all dead. Does anyone know where to get them?

Nov 26, 2022 at 12:00 AM

JohnFerrillo
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p.54 #12 · p.54 #12 · Techart PRO LM-EA7 FAQ

The Techart tcx-01 adapter for EF Canon lenses to Hasselblad X series works very well with my EF lenses, but I would like to use a Zeiss Distagon 21mm with it. The electronic shutter refuses to actuate. Any ideas?

Jun 01, 2023 at 08:35 PM

cyberjunkie
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p.54 #13 · p.54 #13 · Techart PRO LM-EA7 FAQ

One thing i still don't understand.
What's the meaning of the max aperture one can enter editing the fields of the various f/stops using the Android Bluetooth config app.
One practical example: I edited the f/11 field to f/1.8-55mm (replacing the default value of 3.5/15mm).
Wha's the practical use of entering the max aperture, when the EXIF still shows f/2 ?
When the actual aperture of the lens is less than f/2 I can enter a slower value, compensate dialling a minus compensation with the wheel, and see the real aperture value in the EXIF (still keeping a correct exposure).
With an 1.8/55mm lens, I cannot do the same, cause the camera doesn't allow me to set an aperture larger than f/2.
I remember that at one time I have seen faster values available, but once memorised the new settings (set the camera aperture to f/11, taken one image, shut down the camera setting to f/2 after restart) any lower value is not available anymore.
The only answer I can think of is that the adapter is seen as a 2/40mm lens, so larger apertures are not available. Then what's the use of entering a wider aperture using the config app?
I guess I'm missing something...
Please enlighten me :-)

Sep 08, 2023 at 05:29 PM

Fred Miranda
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p.54 #14 · p.54 #14 · Techart PRO LM-EA7 FAQ

LightOfAeons wrote:
Heyho,
I just got the A7c and want to try out the LM-EA7. Unfortunately the links to the Android software and new 7.0 firmware are all dead. Does anyone know where to get them?

Here are the Android files I have:
https://www.fredmiranda.com/Buzz/LM-EA7.zip

Feb 05, 2024 at 12:58 PM

lifef8
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p.54 #15 · p.54 #15 · Techart PRO LM-EA7 FAQ

Thanks Fred!
Has anyone else ran into an issue where the app says it cannot find the adapter? I noticed a thread from 2017 about this, but I'm curious if it has to do with my version of Android?

Feb 05, 2024 at 01:34 PM

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p.54 #16 · p.54 #16 · Techart PRO LM-EA7 FAQ

lifef8 wrote:
Thanks Fred!
Has anyone else ran into an issue where the app says it cannot find the adapter? I noticed a thread from 2017 about this, but I'm curious if it has to do with my version of Android?

Adjusting how close the phone is to the adapter seemed to help in the past.

Feb 05, 2024 at 04:37 PM

lifef8
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p.54 #17 · p.54 #17 · Techart PRO LM-EA7 FAQ

I tried a few things, phone ontop of adapter, lens on adapter, lens off, removing battery before starting. Hmm. I know the app is designed for Android 9, so that might be it?

Feb 05, 2024 at 05:00 PM

Fred Miranda
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p.54 #18 · p.54 #18 · Techart PRO LM-EA7 FAQ

lifef8 wrote:
I tried a few things, phone ontop of adapter, lens on adapter, lens off, removing battery before starting. Hmm. I know the app is designed for Android 9, so that might be it?

I'm not sure. It should work with any Android via bluetooth.

Feb 05, 2024 at 09:29 PM

Kressouille
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p.54 #19 · p.54 #19 · Techart PRO LM-EA7 FAQ

Hi everyone

I have an issue with one LM-EA7 adapter on an A7R2.
It is not recognized by the camera body (since it displays "F--", with no autofocus operation).
When I do to the menu, the body says "the lens is not recognized".

When I put this adapter on a A7R, the adapter is recognized and the autofocus reacts (but does not work properly of course as the adapter is not supposed to work with the A7R)

Would this be a problem with the electric connection plots ?

Or a firwmare issue (the guy that sold it to me has upgraded it to work on a A7R5) ?
But how to downgrade the firmware ? there is no more firmware available for LM-EA7 on techart site.

Does anyone experienced such an issue ?

Thanks a lot for any help.

Kressouille

PS : I contacted Techart this morning. No answer yet so far.

May 31, 2024 at 03:32 AM

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