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Thread: Contax g 45mm on A7R

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    Contax g 45mm on A7R

    On the other posts, there were some questions. Not to divert the discussion there, I am posting here.

    I read that contax g 45mm is similar to ZM 50 planar. It was the second sharpest lens tested on film by photodo. I prefer 45mm to 55mm for walking out and also the smaller size helps. Here is a comparison to other 35mm Sony/Zeiss lenses (g35mm and g45mm are same sizes):


    Here are some g45mm shots with A7R using af adapter:























    on nex-6:


    Lots of cat shots, but these should show the bokeh characteristics...
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    Re: Contax g 45mm on A7R

    Quote Originally Posted by serhan View Post

    Lots of cat shots, but these should show the bokeh characteristics...
    I do not see any purple fringing at all in those backlit cat shots.

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    Re: Contax g 45mm on A7R

    Very nice. The lens and AF adapter seem like a great combination.

    JIm

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    Re: Contax g 45mm on A7R

    Just a word of caution to those using the older, version 2 (Eagle) TechArt Contax G to NEX adapter with newer full frame Sony cameras. I put my Eagle adapter on the Sony A7II with a 45 G lens and noticed that it was producing low resolution raw files (about 10mp instead of 24). Checked my menu settings and noticed that APS-C Size Capture was on AUTO. Turned it to OFF and files are then back to normal 24 mp size. Apparently the camera sees the adapter as an APS-C lens and will reduce file size if the menu function for APS-C File size is on AUTO.
    Carl
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    Re: Contax g 45mm on A7R

    Quote Originally Posted by scho View Post
    Just a word of caution to those using the older, version 2 (Eagle) TechArt Contax G to NEX adapter with newer full frame Sony cameras. I put my Eagle adapter on the Sony A7II with a 45 G lens and noticed that it was producing low resolution raw files (about 10mp instead of 24). Checked my menu settings and noticed that APS-C Size Capture was on AUTO. Turned it to OFF and files are then back to normal 24 mp size. Apparently the camera sees the adapter as an APS-C lens and will reduce file size if the menu function for APS-C File size is on AUTO.
    The other word of caution is to make sure all lens compensations are set to off in the Sony menu.

    The adapter is recognized as a 16mm lens and the camera applies heavy adjustments that will generate a halo effect around the vignetting area.

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    Re: Contax g 45mm on A7R

    I am using ver 3 now. I had the ver I and was working fine with nex 6 but it shortcircuited 2 A7R's since the adapter was a little loose in A7R mouth. Ver 3 has faster af and also produced for FF. You can upgrade your ver I & II adapters also:
    Upgrade to DEO-Tech (Contax G to Sony E) Autofocus adapter Mark 3! | DEO Tech

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