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Leica M Monochrom

Filters and Focus Error / Sharpness

If one can compensate for the shift in focus, use of a yellow/orange/red filter can in theory improve image sharpness by eliminating other wavelengths of light.

In practice, the Leica MM provides no feasible (quick and reliable) means of compensating for the shift in focus that occurs with yellow/orange/red/deep red filters. The absence of a Live View facility and the awful image zoom quality post-shot mean that there is no reliable mechanism in the camera to check that focus is critically sharp.

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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 and Leica S.

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 28 megapixels filling up to 5K display, 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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