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A7R II Kolarivision Mod: Zeiss Batis 25mm f/2 vs Unmodified Camera
A specially modified Sony A7R II (KolariVision) and a stock unmodified A7R II were used to explore the performance of the Zeiss Batis 25mm f/2 Distagon.
In particular, a key question is whether modifying the Sony A7R II to deliver better performance with Leica M lenses also modifies (degrades) the performance of native lenses which expect the appropriate thickness and refractive-index sensor cover glass.
The answer speaks directly to whether a modified Sony A7R II is suitable as an all-arounder, or whether shooters might need both an unmodified camera (for native lenses and/or DSLR lenses) and a modified camera (for Leica M and Zeiss ZM rangefinder lenses).
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Special emphasis is placed on Sony full-frame, including Sony lenses and the high performance Zeiss Batis and Zeiss Loxia lenses plus Rokinon/Samyang and others. Fujifilm X, Olympus and Panasonic M4/3, Sigma dp Merrill and dp/sd Quattro are also covered in depth. Years in the making, it offers a wealth of material for choosing and using a mirrorless camera.
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