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Phase One IQ4 + Schneider Kreuznach LS 40-80mm f/4-5.6 Aperture Series @ 40mm: Mosaic

This aperture series look at performance of the Schneider Kreuznach LS 40-80mm f/4-5.6 at 40mm on a planar target at far distance. Key issues include sharpness across the frame and particularly peripheral forward field curvature and focus shift.

In diglloyd Medium Format:

One IQ4 + Schneider Kreuznach LS 40-80mm f/4-5.6 Aperture Series @ 40mm: Mosaic

Includes images up to full 150MP camera resolution (14204 X 10652) from f/5 through f/11 including 100 megapixel versions for perspective vs other medium format cameras, plus crops.

f8 @ 1/25 sec, ISO 64; 2019-11-29 08:45:56
Phase One IQ4 + Schneider Kreuznach LS 40-80mm f/4-5.6 @ 40mm
RAW: LACA corrected, USM {8,50,0}, SmartSharpen{120,0.7,0}

[low-res image for bot] Bottom of frame cropped off

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Canon EOS R5 Mirrorless Camera
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