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

Leica 50/2 APO ASPH Flare (Internal Reflections, June 2013 Sample)

June 2013 lens sample, which suffered from poor flare control.

As noted on the flare examples page, the 50mm f/2 APO-Summicron-M can show very strong veiling flare under some lighting conditions.

These pictures of the lens itself are suggestive of inadequate blackening of internal lens surfaces, noting well that this is speculation and not proof—but the picture looks persuasive and indeed to the naked eye this is not a type of reflection I am used to seeing with any of my Zeiss lenses.

Caveats noted, the three concentric red flare rings example appears to mirror the three shiny internal lens surfaces seen looking into the lens shown below.

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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.

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.

Leica M240 + 50mm f/2 APO-Summicron-M ASPH

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