BrandonSi
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Upload & Sell: On
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genji wrote:
The Techart PRO was waiting for me at the post office today, along with a (~1957) Konishiroku Hexanon 50mm f/1.9 lens (I'm a sucker for legacy 50mm LTM lenses). The Hexanon 50 had to take a back seat to the Techart PRO but I'm sure that, once they meet, they'll get along fine together.
I mounted the C-Sonnar ZM 50/1.5 on the TAP and it just worked, finding focus with no difficulty on various objects in my living room. I took a few snaps and discovered that the default focal length of 15mm had been recorded in the EXIF data. (Note to Techart: a default focal length of 50mm might be preferable to 15mm, given the popularity of 50mm lenses relative to that of 15mm lenses). Even so, changing the focal length stored in the adapter to 50mm was quick and easy.
I'd deliberately made some exposures with the preinstalled version 3 firmware so I could see how the AF had improved with version 4. I used the iPhone app to update the firmware and was really impressed that what seems complicated when one reads about it is actually straightforward in practice. I forgot to turn the phone Auto-Lock to Off and had a momentary panic when the display turned off but pressing the Home button reactivated the display and I saw that the update was proceeding without problems.
I turned on the camera and checked the "lens" firmware version: 4.0. So far, so good. And the AF was noticeably faster. Then I went out to take pictures in the late afternoon, my favorite time to shoot. All appeared to be going well, with the TAP seemingly able to find focus (as Fred has mentioned) in quite low light. When I got home though, and loaded the pictures into Photo Mechanic, I saw that the focal length recorded in the EXIF was 15mm! The firmware update had clearly reset the adapter to the default value and messed up the EXIF data (see below). What one might call a trap for young players. So I'm not sure how much this has impacted negatively on pictures that were shot at 1/30 of a second....Show more →
Just to be clear, the IBIS focal length you set, and the focal length recorded in the EXIF have no relationship. You would think it would, but it's not the case (though here's hoping techart can figure that out..)
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I sure hope it works well with the Voigtlander 35/1.2 II. 
But I was referring to lock-on flex spot where you can move the camera and it follows a specific focus point automatically.. that is the one that doesn't work.
