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Leica 24mm f/1.4 Summilux-M ASPH

MTF: 24mm f/1.4 Summilux-M ASPH

The MTF suggests a wave-type field curvature , confirmed with field shooting examples showing that the curvature arcs forward at the edges— a conflict with most landscape photography, see the examples

Performance at f/2.8 with flat (planar) subjects can be expected to be mediocre away from center; there is just too much field curvature. This is definitely not a good lens for shooting buildings and similar subjects but it might help in interiors, were an encroaching wall would thus be sharper.

At f/5.6, astigmatism on fine detail develops approaching the edges and this is hinted at in field images, depending on the type of image detail.

Mouse over the apertures below to compare.

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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.

Aperture series 1.4, 2.8, 5.6 available in full article
Leica 24/1.4 Summilux-M ASPH MTF @ f/2.8

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