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EXCERPT page containing first few paragraphs. 2021-06-13 20:08:46

Nikon 14-24mm f/2.8G ED

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Focus Shift: Nikon 14-24 Across The Frame, Focus f/2.8 vs f/5.6 (Cabin)

This Nikon D800E + Nikon 14-24/2.8G example should be of considerable interest to anyone shooting interior or exterior architecture or landscape. Or anyone who might want to optimize the autofocus adjustment to put the 14-24 more into its proper place when focused at f/2.8 but shot at f/5.6 - f/11.

See Detecting and Mitigating Focus Shift in Making Sharp Images.


Users of the Nikon 14-24mm f/2.8G continue writing me over time— some claiming they see no issue, others with relief that they finally understand why the 14-24 is “soft”. Some even go so far as to ask “do you have a bad sample, since mine does not focus shift”. Which is an absurd idea since the optical design does not change from lens to lens; focus shift is not a function of sample variation.

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Diglloyd DAP is DSLR-oriented, but also contains workflow and other topics. Much of the focus is on Canon and Nikon but also Pentax and Pentax medium format.

Special emphasis is placed on lens evaluation, focusing on Canon and Nikon and Sigma lenses, but with a few others like Rokinon/Samyang.

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Test scene at f/5.6

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