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

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Focus Study (Leica M Monochrom, Dolls)

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

Leica 18-megapixel M Monochrom at ISO 320 + 50mm f/2 APO-Summicron-M ASPH, approximate 1:11 reproduction ratio at a distance of ~75 cm (750mm), near but not quite at the 0.7m close-focusing limit of the 50mm f/2 AA. Lighting was not measured in color temperature, but was cool daylight.

This meticulously-executed test used a focusing rail to bracket focus in small increments in order to evaluate peak sharpness and focus shift:

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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.

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