EXCERPT page containing first few paragraphs. 2020-11-30 18:10:56
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June 2013 lens sample, which suffered from poor flare control.
Tests of the Leica M Monochrom showed that the use or orange and deep red filters led to a very significant rearward focus shift, with red wavelengths backfocusing substantially. See Filters and Focus Error / Sharpness.
Lighting color temperature was around 6000°K for this test. This might have a bearing on the amount of focus shift, see Focus Shift with Color Filters on M Monochrom.
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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.
Special emphasis is placed on Leica M lenses and certain Zeiss ZM lenses.
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- 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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