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Leica 28mm f/1.4 Summilux-M ASPH Aperture Series: Waning Sun on Aspen Winter Wonderland, Lundy Canyon (Leica M10 Monochrom)

This series from f/1.4 through f/11 examines total imaging performance of the Leica 28mm f/1.4 Summilux-M ASPH. Sharpness near-to-far and across-the-field along with field curvature, focus shift and general imaging performance.

Of particular interest here is showing how to focus for a scene like this so as to achieve peak total sharpness given the field curvature and focus shift behaviors.

Leica 28mm f/1.4 Summilux-M ASPH Aperture Series: Waning Sun on Aspen Winter Wonderland

Includes images from f/1.4 through f/11 at up to full resolution, plus crops.

Overall I’m really pleased with this series—this is exactly the kind of subject that sings in black and white—color would have only been a distraction and raw conversion headache. But sadly (for me), the black-dot pimple problem pervades the fine details of the fine aspen branches. My finest images from this trip are all mangled by this unacceptable image quality defect.

CLICK TO VIEW: Leica M10-R/M10m system

Waning Sun on Aspen Winter Wonderland
f4 @ 1/1000 sec, ISO 160; 2020-12-18 13:59:59
Leica M10 Monochrom + Leica 28mm f/1.4 Summilux-M ASPH + filter B+W 090 Red
ENV: Lundy Canyon, altitude 8100 ft / 2469 m, 28°F / -2°C
RAW: vignetting corrected, push 0.5 stops, +100 Shadows, +15 Clarity, +20 Texture, USM {4,50,0}

[low-res image for bot]

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