EXCERPT page containing first few paragraphs. 2019-05-23 23:07:36
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Background: see the general discussion of the implications of focus shift on the Picnic Table example page. That discussion is important, and not repeated here.
This example at 50mm confirms and extends the focus shift shown and discussed in detail on the Focus Shift Aperture Series@ 38mm: Picnic Table page. See that page for a thorough discussion as well as the example at 31mm.
The example shown here is a crop near center upon which the lens was focused at f/4. The aperture series shows the behavior with stopping down.
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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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