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EXCERPT page containing first few paragraphs. 2023-03-21 16:41:48

Leica M Typ 240
Leica 18mm f/3.8 Super-Elmar-M ASPH

Aperture Series: Sidelit Barn at DeChambeau Ranch (M240)

This example shows the superb contrast possible with the 18/3.8 Super-Elmar-M ASPH and also allows an evaluation of the sharpness gradient (field curvature) by dint of the near-to-far grassy areas. In a related vein, the slight “swing” (view camera term) as noted in other series is actually a plus for this particular subject because it biases sharpness to the distance on the left side, at the cost of less-good sharpness on the right side.

Interesting diffraction effects are observed on the metal roof siding; see crops. Also, color aliasing is in abundance (a Bayer matrix sensor behavior and not a plus).

This series includes crops at f/6.8 and f/9.5 and f/13 in part to evaluate quality in the more stopped-down ranges of apertures, the concern being micro contrast loss from diffraction at f/9.5 and f/13 in particular.

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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.
  • Make better images, a sort of “cheat sheet” saving yourself months or years of ad-hoc learning. Processing parameters are discussed and shown.
  • 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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Aperture series 3.8, 5.6, 8, 11, 13 available in full article

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