EXCERPT page containing first few paragraphs. 2019-03-19 18:56:43
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This aperture series from f/1.4 through f/9 shows overall performance along with a right bottom corner weakness observed repeatedly in other outdoor distance scenes. It’s the kind of thing that drives me nuts when the camera itself is in question including a second sample. I never had such problems with my rock-solid Nikon D810.
However, several other moderate telephoto lenses (Sigma 85/1.4A and Sigma 135/1.8A) did not show this distinctive bottom right corner blur issue, so it looks like a “bad sample”, albeit one that cleans up nicely when stopped down.
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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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