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Examples: Zeiss 25/2.8 Biogon (Forest, NEX-7)
The 25/2.8 Biogon has ray angle of 37.3°, which means it is very likely to see degradation of color and sharpness towards the edges and corners of the frame on the Sony NEX-7. My interest in taking these photos was to assess whether the 25/2.8 Biogon is a viable choice on the Sony NEX-7.
Future sensor designs might make the 25/2.8 Biogon a terrific performer; it’s mainly about the sensor cover glass.
Technical
RAW processing was done in Adobe Camera RAW. Except as noted, minimal processing was done: exposure compensation and white balance to taste.
The notation ~ means “best guess from memory”, e.g., ~f/4; the NEX-7 cannot know or record the actual aperture used.
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Diglloyd Guide to LEICA contains in-depth coverage of Leica M system cameras and lenses, with additional coverage of Leica M Monochrom, Leica Q.
Special emphasis is placed on Leica M lenses and certain Zeiss ZM lenses.
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Sony NEX-7 + Novoflex lens adapter + Zeiss ZM 25/2.8 Biogon