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Archive 2016 · Techart PRO AF adapter now In Stock!
  
 
Fred Miranda
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p.16 #1 · p.16 #1 · Techart PRO AF adapter now In Stock!


k-h.a.w wrote:
!00% resolution crop.

http://photos.smugmug.com/KHW/Pics-by-Date/2016-08-20-A7r224-3535-MINOLTA/i-Rr4RZ8H/1/O/_DSC4097_Why%20don%27t%20you%20take%20a%20picture%20of%20us_7767x5181_Crop_1988x1326.jpg
I will give them a couple of prints tomorrow, K-H.


KH,
How do you like your Minolta MD 24-35/3.5? Sharp on corners at smaller apertures? Too much CA?
It does not do too well on this survey but I am not sure how accurate this is:
http://www.photozone.de/active/survey/querylenstxt.jsp?filter=%22brand='Minolta%20MD'%22
Aug 21, 2016 at 10:45 AM
inglis
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p.16 #2 · p.16 #2 · Techart PRO AF adapter now In Stock!


Thanks Fred,
So the Contax CY 100-300, and similar lenses would work with the Techart.
very interesting.
Aug 21, 2016 at 10:50 AM
Fred Miranda
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p.16 #3 · p.16 #3 · Techart PRO AF adapter now In Stock!


inglis wrote:
Thanks Fred,
So the Contax CY 100-300, and similar lenses would work with the Techart.
very interesting.

Yes, the CY 100-300 is my main telephoto lens and works great with Techart.
Aug 21, 2016 at 10:51 AM
rji2goleez
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p.16 #4 · p.16 #4 · Techart PRO AF adapter now In Stock!


Fred Miranda wrote:
That's what I'm getting. Zero drain. I'm also only using OEM batteries.


Same result with either OEM or Wasabi batts
Aug 21, 2016 at 03:37 PM
k-h.a.w
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p.16 #5 · p.16 #5 · Techart PRO AF adapter now In Stock!


Fred Miranda wrote:
KH,
How do you like your Minolta MD 24-35/3.5? Sharp on corners at smaller apertures? Too much CA?
It does not do too well on this survey but I am not sure how accurate this is:
http://www.photozone.de/active/survey/querylenstxt.jsp?filter=%22brand='Minolta%20MD'%22


Thanks Fred. When the A7r was first available I noticed some excellent cityscapes on GetDPI by Michiel Schierbeek (alias sculptormic on fredmiranda) shot with this lens. As the lens was pretty inexpensive I got one from eBay, but never evaluated it thoroughly or shot a lot of images with it. So, I am really not knowledgable enough to address your questions. Sorry about that.

K-H.
Aug 21, 2016 at 06:57 PM
suteetat
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p.16 #6 · p.16 #6 · Techart PRO AF adapter now In Stock!


Hmmm.. I just noticed one problem. With Leica 50/2 apo, I took some pictures with f2 and f8 at hard stop infinity and the picture of the skyline was perfectly sharp with CV adapter. Switched to Techart, at f8, focusing at a building on the horizon, picture was perfectly sharp with no difference than using CV adapter but at f2, Techart was struggling to focus quite a bit (pretty much anything below f4 actually) and when it eventually focused and I could take a picture, the whole frame was much much softer ( not so well focus). I used tripod and cable release to test this on 2 separate days. I am at work now so I cannot post picture but can do it tonight when I get back home but just wonder if anybody else has any problem with focus wide open at inifinity or near infinity distance? In the past at closer range, I never notice any problem with 50/2 apo.
Aug 21, 2016 at 09:57 PM
arduluth
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p.16 #7 · p.16 #7 · Techart PRO AF adapter now In Stock!




suteetat wrote:
Hmmm.. I just noticed one problem. With Leica 50/2 apo, I took some pictures with f2 and f8 at hard stop infinity and the picture of the skyline was perfectly sharp with CV adapter. Switched to Techart, at f8, focusing at a building on the horizon, picture was perfectly sharp with no difference than using CV adapter but at f2, Techart was struggling to focus quite a bit (pretty much anything below f4 actually) and when it eventually focused and I could take a picture, the whole frame was much much softer ( not so well focus). I used tripod...Show more →

Are these night images, or bright light?


Aug 21, 2016 at 10:20 PM
suteetat
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p.16 #8 · p.16 #8 · Techart PRO AF adapter now In Stock!


arduluth wrote:
Are these night images, or bright light?

4pm 2 days ago and 7.30 am this am. With f2, EV 0,iso100 shutter speed was 1/4000 this morning when I tried.
Aug 21, 2016 at 10:55 PM
suteetat
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p.16 #9 · p.16 #9 · Techart PRO AF adapter now In Stock!


Here are the pictures

With 50/2 apo @f8 and Techart Adapter, the whole picture.
Corner and center pictures are 100% cropped no resize. Color is a bit different as they are taken about 30 minutes apart in the morning.



corner


center


With Techart @f2
corner


center


Edited on Aug 22, 2016 at 04:03 AM · View previous versions
Aug 22, 2016 at 03:57 AM
suteetat
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p.16 #10 · p.16 #10 · Techart PRO AF adapter now In Stock!


At f2 with CV adapter
Aug 22, 2016 at 03:58 AM
inglis
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p.16 #11 · p.16 #11 · Techart PRO AF adapter now In Stock!


techartpro wrote:
Since we are currently in discussion with a distributor in US, the product is temporary delisted from B&H. For the time being, please kindly order it via our webstore. Next delivery is in late Aug.
http://techartpro.com/product/techart-pro-leica-m-sony-e-autofocus-adapter/


What would be quicker at this point, ordering from Techart direct or wait until the adapter is listed again at B&H?

Techart says shipping to the us takes 3-4 weeks.
Aug 22, 2016 at 06:54 AM
GMPhotography
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p.16 #12 · p.16 #12 · Techart PRO AF adapter now In Stock!


TechArt actually looks a little crisper . I. Looking at the silver building in the foreground.
Aug 22, 2016 at 07:19 AM
bluloo
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p.16 #13 · p.16 #13 · Techart PRO AF adapter now In Stock!


Same Sony 1020 mAh battery that previously drained significantly overnight, now at 100%, after about 12 hrs.

Go figure.
Aug 22, 2016 at 10:49 AM
rji2goleez
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p.16 #14 · p.16 #14 · Techart PRO AF adapter now In Stock!


Took another older 1020 OEM battery test. Still at 100% after 12 hours.
Aug 22, 2016 at 10:58 AM
jamato8
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p.16 #15 · p.16 #15 · Techart PRO AF adapter now In Stock!


On the images above, to me the adapter combination is sharper. Seems pretty obvious.


Aug 22, 2016 at 01:28 PM
Fred Miranda
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p.16 #16 · p.16 #16 · Techart PRO AF adapter now In Stock!


suteetat wrote:
At f2 with CV adapter
http://i1112.photobucket.com/albums/k485/ballade1/50-test-e_zps7ym4cl3j.jpg

http://i1112.photobucket.com/albums/k485/ballade1/50-test-h_zpsy3rtkh0h.jpg

I've matched the exposure and white balance closer between the two samples and also believe the techart crop at f2 is sharper.
Aug 22, 2016 at 02:40 PM
fsiagian
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p.16 #17 · p.16 #17 · Techart PRO AF adapter now In Stock!


Fred, so for your Contax lens, you use contax to Leica M adapter + Techart? I am thinking about using it with Contax 85mm 1.4 and buy A7ii to replace my original A7. Will that lens be too heavy for the motor? I am not familiar with the 100-300mm but I am guessing it must be heavier than the 85mm. Thanks Fred.
Aug 22, 2016 at 02:40 PM
Fred Miranda
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p.16 #18 · p.16 #18 · Techart PRO AF adapter now In Stock!


fsiagian wrote:
Fred, so for your Contax lens, you use contax to Leica M adapter + Techart? I am thinking about using it with Contax 85mm 1.4 and buy A7ii to replace my original A7. Will that lens be too heavy for the motor? I am not familiar with the 100-300mm but I am guessing it must be heavier than the 85mm. Thanks Fred.

Yes, adapter on adapter.
The 100-300/4.5-5.6 is 925 grams + CY-M adapter + TechArt (135g), so it's not light.
It works fine if you hold the lens and let the adapter do the focusing. (Same for the 6.6-pound 200/1.8L)

I used this one:
https://www.amazon.com/Concept-Mount-Adapter-Contax-Camera/dp/B0118XR2XU/ref=sr_1_1?s=photo&ie=UTF8&qid=1471895568&sr=1-1&keywords=C%2FY-L%2FM
Aug 22, 2016 at 02:50 PM
jamato8
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p.16 #19 · p.16 #19 · Techart PRO AF adapter now In Stock!


On that section it is sharper but on other images the areas with the use of the adapter are clearly sharper. Maybe I missed what was being focussed on.


Aug 22, 2016 at 03:09 PM
fsiagian
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p.16 #20 · p.16 #20 · Techart PRO AF adapter now In Stock!


Fred Miranda wrote:
Yes, adapter on adapter.
The 100-300/4.5-5.6 is 925 grams + CY-M adapter + TechArt (135g), so it's not light.
It works fine if you hold the lens and let the adapter do the focusing. (Same for the 6.6-pound 200/1.8L)

I used this one:
https://www.amazon.com/Concept-Mount-Adapter-Contax-Camera/dp/B0118XR2XU/ref=sr_1_1?s=photo&ie=UTF8&qid=1471895568&sr=1-1&keywords=C%2FY-L%2FM

Thanks Fred


Aug 22, 2016 at 05:09 PM
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