Reviewed: Kolarivision-Modified Sony A7R II with Zeiss Batis 25mm f/2 Distagon
Get Sony A7R II mirrorless and Leica 28mm f/1.4 Summilux-M ASPH B&H Photo.
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.
Following the three lens survey of Leica M lenses on the KolariVision-mod A7R II, 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).
Sony A7R II Kolarivision Mod: Zeiss Batis 25mm f/2
See also my analysis of the performance of Zeiss ZF.2 lenses on Sony Mirrorless in Guide to Zeiss (full aperture series as full lens evaluations for several of the ZF.2 wide angle lenses).