diglloyd publication
Imagery: Auto - Large Table of Contents
Leica 50mm ƒ/2 APO-Summicron-M ASPH
Leica 50mm ƒ/2 APO-Summicron-M ASPH

Examples: Yosemite Erratics and Granite (M240)

June 2013 lens sample, which suffered from poor flare control.

These examples shot in the White Mountains of California and Yosemite National Park.

The intent of this series was to explore sharpness at wider apertures, but even more so to explore subject separation and bokeh possible at wider apertures, the ƒ/2 maximum aperture being handicapped by a full stop versus the 50/1.4 Summilux and two stops over the 50/0.95 Noctilux.

In general, subject separation is often degraded by field curvature: an uneven sharpness curve (non-planar) distracts by making mid-zones or edges/corners sharper forward or back of the nominal plane of focus; the Noctilux could almost be said to be notorious in this regard, with its rearward sharpness curve to the edges and corners (see the Garlic example).

Article continues for subscribers...

If you’re already a subscriber, CLICK HERE TO LOG IN

Guide to Leica

diglloyd.com’s Guide to Leica includes hundreds of pages of exclusive coverage and high resolution, Retina-grade examples covering Leica M-System lenses and digital bodies with in-depth performance comparisons and analysis. Since 2009, Guide to Leica is the authoritative review and on-line reference for discerning Leica users. Subscriptions cost $ per year.

  1. Explore the table of contents
  2. Check out Lloyd Chambers’ Blog
  3. Subscribe today!
diglloyd image
Aperture series 2, 5.6 available in full article

diglloyd Home Page | Terms of Use | PRIVACY POLICY | Contact
Copyright © 2008-2015 diglloyd Inc, all rights reserved.