EXCERPT page containing first few paragraphs. 2023-02-03 03:00:59
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Distortion is of mild pincushion variety typical of moderate telephoto lenses , the consistent distortion pattern being easily corrected if one so desires.
While mild, pincushion distortion (bowing in) is more disturbing (to this author) than the same amount of barrel distortion (bowing out), because it results in a pinched look. Something to keep in mind if shooting groups of people and/or placing a person’s face off-center in the frame.
Given the ultra high micro-contrast of the 90/2 APO, correcting distortion will likely to result in a small loss of contrast on the finest details, at least with high resolution digital SLRs. For that reason, I prefer to not correct distortion.
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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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- 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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