EXCERPT page containing first few paragraphs. 2023-02-08 01:48:38
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Wave-type distortion is fairly undesirable because it is the most difficult to correct well. And it just plain looks crappy when straight lines are involved. But if the raw converter has a solid lens profile, one click should do it.
While 1% distortion of the Leica 35/2 APO is low, the Zeiss ZM 35mm f/1.4 Distagon has only half that at 0.5% wave-type distortion. That’s the difference between mandatory correction for things like architecture, and not needing it most of the time. And the Zeiss ZM 35mm f/2 Biogon is effectively distortion free.
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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.
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