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MTF: 28mm f/2.8 Elmarit-M ASPH
Performance is very high for a 28mm lens.
If anything, field shots suggest higher contrast centrally than the MTF chart indicates. The 28/2.8 is a very nice performer by f/5.6 to f/8.
Wide open at f/2.8, performance is very good to the edges, then drops off steadily. Stopping down to f/5.6, performance rises over the entire frame to an outstanding level.
Discussion follows below.
For the 2/28 and 2.8/28 2016 lenses, minor changes in the lens positions have been made that improve the contrast and resolution performance when being used on digital cameras. The MTF graphs in the technical data show the pure lens performance independent from the sensor or film, so the improvements are not readily visible. But on actual M or SL or Sony cameras, much better details and contrast will be seen, especially in the corners. Focus shift is on the same level as before.
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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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