Contax G 21mm biogon comments

Started Nov 16, 2011 | Discussions thread
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docmaas Veteran Member • Posts: 4,999
Contax G 21mm biogon comments

I was having some trouble with color cast and vignetting with this lens. I had read here that it is not necessary to trim the protective ears around the rear element as you can mount the lens on the adapter after mounting the adapter on the camera.

I tried that mounting method and seemed to work ok but I was still getting colorcast.

After trimming the ears down to a level where I can mount the adapter and lens together all the color cast is gone. There is still a minimal amount of vignetting though.

Mike

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