EXCERPT page containing first few paragraphs. 2022-01-17 02:27:50
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Nikon provides computed MTF (not measured) MTF at a low resolution of 30 line pairs per mm (lp/mm).
Thus the claimed MTF is fantasy MTF not based on a real lens, not measured from a real lens, and not comparable to the 40 lp/mm provided by companies like Zeiss. It is thus not very instructive as to real-world performance.
That said, the MTF chart at 24mm suggests field curvature that rolls off sharpness into the corners. But field shots are required to tell if this is field curvature or decreasing lens performance.
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