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Zeiss ZM 18mm f/4 Distagon

Vignetting: Zeiss ZM 18/4 Distagon

Optical vignetting is still significant at f/8, and for this reason, tricking the M9 into lens correction can be helpful, either by manually specifying lens correction or by using the Coder Kit.

The examples show that a setting for the 35/2 Summicron can work quite well in reducing vignetting without warping corner color.

See also the Color Shading page.

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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.
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  • 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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Zeiss ZM 18mm f/4 Distagon vignetting
Leica M9 + Zeiss ZM 18/4 Biogon @ ~f/8, 1/500 sec handheld, ISO 160 +1.5 push

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