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EXCERPT page containing first few paragraphs. 2023-02-08 02:16:42

vs Sigma 180/2.8 APO and Voigtlander 180/4 APO (D800E, Dolls)

Three APO lenses compared on the 36-megapixel Nikon D800E. Only the Sigma is in production as of 2013 with the two others having been discontinued but available on the used market.

A high performing apochromatic lens should eliminate both longitudinal chromatic aberration (LOCA) and lateral chromatic aberration (LCA), and as related effects, it should also minimize secondary longitudinal chromatic aberration, spherical aberration and spherochromaticism.

There is no marketing definition for “APO”. Hence each vendor is free to correct for color to the extent deemed appropriate for the idea.

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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.

Want a preview? Click on any page below to see an excerpt as well as extensive blog coverage, for example on Leica.

vs vs Voigtlander 180/4 APO-Lanthar
Sigma 180mm f/2.8 APO-Macro DG HSM + Leica 180mm f/2.8 APO-Elmarit-R + Voigtlander 180/4 APO-Lanthar (not shown)

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