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EXCERPT page containing first few paragraphs. 2021-09-26 02:00:34

Leica 35mm f/2 APO-Summicron-SL ASPH

Distortion for Leica 35mm f/2 APO-Summicron-SL ASPH

The Leica 35mm f/2 APO-Summicron-SL ASPH is a near-zero distortion lens, which means that its claimed MTF will suffer no degradation from distortion correction, quite unlike its 28mm sibling.

At the time these images were processed, neither Adobe Camera Raw nor Iridient Developer had lens profiles for the 35/2 APO-SL, so there is no comparison with/without distortion correction.

Example — house

The rain gutters have a slight bowing in reality, and the roof is not perfectly straight. As far as I can determine vs reality, the distortion is zero or nearly so.

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f5.6 @ 1/25 sec, ISO 100; 2021-09-04 18:54:42
LEICA SL2 + Leica 35mm f/2 APO-Summicron-SL ASPH

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