EXCERPT page containing first few paragraphs. 2023-02-08 01:49:27
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Distortion is of the wave type, generally unavoidable in an extreme wide angle design.
Barrel distortion is seen over the central 3/4 of the frame, reversing to accelerating pincushion distortion beyond that— a wave-type pattern readily visible on man-made structures, such as the front of a building or a fence or a horizon. The pattern is the same for all focal lengths.
Distortion is greatest at 16mm, decreasing at 18mm and decreasing further at 21mm, where it is quite low in the context of a 21mm lens, and little different from the 21mm f/3.4 Super-Elmar-M ASPH.
Toggle the three focal lengths to see the relative distortion for each.
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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.
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- 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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