EXCERPT page containing first few paragraphs. 2022-05-21 17:15:49
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This finely detailed scene at far focus distance is an exceptionally demanding subject that makes mincemeat of most lenses, mercilessly revealing every weakness, lack of symmetry, etc. Most lenses require f/5.6 or f/8 to sharpen the whole mosaic.
Assessed here in particular are the results at f/13, which are typically slightly marginal from diffraction on both the Nikon D810 and the Canon 5DS R. But the Pentax K1 SuperRes pixel shift mode preserves micro contrast extremely well and is thus very interesting at f/13.
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