EXCERPT page containing first few paragraphs. 2023-03-21 16:18:11
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Compared: Noctilux, Summilux, APO-Summicron, Zeiss Planar (M240, Bristlecone)
June 2013 50/2 APO, which suffered from poor flare control.
The Leica 50mm f/2 APO-Summicron-M ASPH is perhaps the most highly corrected lens in the Leica M lineup, offering very high performance with a flat field (little or no field curvature).
- How does a 3D outdoor image quality actually work out in the context of other 50mm choices?
- Does the 50 APO really deliver the goods compared to the others especially when all are given a fair shake at peak performance in the f/5.6 - f/8 range?
- Are there other considerations or attributes exposed here?
The question is a complex one: between possible focus shifts and field curvature with each lens, and the deep “3D” structure of the scene and small focus variations (precise focus matching is impossible), we must be prepared to evaluate the results in context of these behaviors, not leaping to erroneous conclusions by staring at too small an area.
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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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