Imagery: Auto - Large Table of Contents

EXCERPT page containing first few paragraphs. 2024-02-24 01:01:42
UA_SEARCH_BOT_null @ 3.239.9.151

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

Leica 90mm f/2 APO-Summicron-M ASPH

90mm f/2 APO-Summicron-M ASPH

The 90mm f/2 APO-Summicron-M ASPH is hit and miss with rangefinder focusing M9; the precision required really is pushing the limits of the accuracy needed for high resolution digital. But on the Leica M Typ 240, the 90/2 APO pops into or out of focus beautifully using Live View, and focus precision can be guaranteed just about always.

The 90mm f/2 APO-Summicron-R ASPH is identical optically, but it requires the use of the Leica R-Adapter-M. Your author prefers the build of the R version, but the need to use the adapter is not a plus.

Construction

Optical efforts are robust, but perhaps the 75mm f/2 APO takes it one step further by adding a flloating lens element for close-range quality, which the 90/2 lacks:

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 only 68 cents a day ($249.95)!

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.

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