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Leica M10-R
Leica 50mm f/2 APO-Summicron-M ASPH

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Leica 50/2 APO ASPH Flare (Leica M10-R, Dec 2020)

Loaner sample as of late 2020, unknown status.

Leica M10-R. No filter was used and the lens hood was fully extended.

This page takes a fresh look at the veiling flare behavior of the Leica 50mm f/2 APO-Summicron-M ASPH as of December 2020, on the Leica M10-R. A shaded/unshaded comparison is shown.

The 50/2 APO and its sibling (and M cameras) should be used with caution for challenging lighting situations. See also:

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Diglloyd Guide to LEICA contains in-depth coverage of Leica M system cameras and lenses, with additional coverage of Leica M Monochrom, Leica Q, Leica SL.

Special emphasis is placed on Leica M lenses and certain Zeiss ZM lenses.

  • Make better images by learning how to get the best results right away.
  • Save money by choosing the right lens for your needs the first time, particularly the Summilux/Summicron/Elmarit choice and/or Zeiss ZM.
  • Make better images, a sort of “cheat sheet” saving yourself months or years of ad-hoc learning. Processing parameters are discussed and shown.
  • Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to full camera resolution, plus large crops [past 2 years or so].
  • Real world examples with insights found nowhere else. Make sharper images just by understanding lens behavior you won’t read about elsewhere.
  • Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
  • Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.

Want a preview? Click on any page below to see an excerpt as well as extensive blog coverage, for example on Leica.

Variants Unshaded,Shaded available in full article
f8 @ 1/180 sec, ISO 100; 2020-12-25 14:59:03
LEICA M10-R + Leica 50mm f/2 APO-Summicron-M ASPH + filter none
ENV: Alabama Hills, altitude 4200 ft / 1280 m, 60°F / 15°C
RAW: +40 Whites, +15 Clarity

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