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90/2.4 Summarit vs 90/2 APO-Summicron: Pescadero Creek Grass and Moss (M240)
This “deep 3D” scene confirms the results seen in the Green Lichen Barn comparison, which was a planar target (field curvature is always a concern when comparing lenses in that it can mislead as to peak sharpness when only a planar target is considered).
Both lenses were focused at f/2.4 with very close attention to focus at maximum Live View magnification. No filters were used and both lenses had their hoods in use.
This test used the 90mm f/2 APO-Summicron-R ASPH which is optically the same as the M version. Your author prefers the R version because it can easily be used with a lens adapter on Canon DSLRs, can be converted for use on Nikon, and can be used on Leica M with Leica’s R-Adapter-M. The R version has been discontinued for some years and would have to be obtained second-hand.
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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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