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Leica 50mm f/1.2 Noctilux-M ASPH

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MTF for Leica 50mm f/1.2 Noctilux-M ASPH

Leica supplies MTF for f/1.3 (not f/1.2)... is it a typo or is it actually f/1.3?

Leica supplies fantasy MTF for its lenses. That is, the MTF is computed (not measured) based on a computer model, not a real lens. Moreover the data is not corrected for the ray angle effects of a digital sensor. Accordingly, real MTF is unlikely to be as good as Leica presents, particularly at wider apertures.

At f/1.3, MTF of the Leica 50mm f/1.2 Noctilux-M ASPH shows reasonably strong contrast for coarse structures but with field curvature showing a large dip not far away from center. Medium size structures have very modest (poor) definition with a wild variation presumably due to field curvature. Fine details effectively do not exist at f/1.3.

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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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Aperture series 1.3,2.8,5.6 available in full article
MTF @ 5/10/20/40 line pairs/mm for Leica 50mm f/1.2 Noctilux-M ASPH

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