Imagery: Auto - Large Table of Contents

EXCERPT page containing first few paragraphs. 2024-03-28 05:57:47
UA_SEARCH_BOT_null @ 3.238.62.119

For full access, subscribe here. Or click title to login.

Leica 28/2.8 Elmarit-M ASPH (2016)

MTF

Performance is high wide open at center with good sharpness across most of the frame, declining towards the edges and dropping off markedly to the corners. These variations are likely mostly a field curvature; actual performance may be higher (just not in a plane).

Stopping down to f/5.6 shows an overall increase in performance that is well worthwhile in total. However, the outer zones near the edges change very little while the corners improve markedly. This may be a balancing effect of the design, with some small focus shifts going on in the outer zones. Or perhaps not, since f/8 does not improve matters.

According to Leica:

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.

Article continues for subscribers...

Diglloyd Guide to Leica is by yearly subscription. Subscribe now for about 25 cents a day ($90/year).
BEST DEAL: get full access to ALL 8 PUBLICATIONS for about 75 cents a day!

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.

Aperture series 2.8,5.6,8 available in full article

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | X.com/diglloyd
Copyright © 2022 diglloyd Inc, all rights reserved.