EXCERPT page containing first few paragraphs. 2021-08-01 04:14:21
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See also: Reader Question: Testing for Focus Shift
This page shows the rearward focus shift (central areas) of the Voigtlander FE 35mm f/2 APO-Lanthar at distance in an outdoors image using two aperture series focused a bit differently. It also discusses how to get the best sharpness in light of the behavior (mitigation).
The Voigtlander FE 35mm f/2 APO-Lanthar has a slight forward focus shift from f/2 to f/2.8, then it shifts strongly rearward until f/8. At each stop, the point of focus remains sharp, but the zone of focus becomes increasingly biased rearward.
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Diglloyd Guide to Mirrorless offers comprehensive integrated coverage of most APS-C and full frame mirrorless cameras and lenses.
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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