EXCERPT page containing first few paragraphs. 2019-09-19 15:12:22
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This scene evaluates the Leica 30-90mm at 90mm. A scene with a great deal of near/far material was chosen to give an idea of out of focus rendition, control of color aberrations, etc.
At 90mm, there is not a lot of usage flexibility: maximum aperture is a very dark and non-versatile f/5.6. Still, the Leica S Typ 006 autofocus was used on the green grass near center, and it delivered highly accurate focus.
Grass Clumps on Boulders in Pescadero Creek
Adobe Camera Raw 8.8.0 (397). ACR settings. Camera Profile = Embedded. No lens corrections used.
Diffraction-mitigating sharpening was used for the f/8, f/11, f/16 exposures as per Mitigating Micro Contrast Losses from Diffraction Blur in Making Sharp Images.
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