Imagery: Auto - Large Table of Contents

EXCERPT page containing first few paragraphs. 2022-01-25 11:30:35

Panasonic Leica DG Summilux 15mm f/1.7 ASPH

Panasonic Leica DG Summilux 15mm f/1.7 ASPH

“Summilux” is Leica-speak for f/1.4, but that rule is apparently violated for the first time by using it with an f/1.7 lens.

The Panasonic Leica DG Summilux* was introduced in mid-2014 as a follow-on lens to two other fast Panasonic Leica lenses, the 25mm f/1.4 DG Summilux, and perhaps the best MFT lens available, the 42.5mm f/1.2 DG Nocticron. Those siblings do not disappoint.

Thus, your author was at first puzzled by the apparent contradiction of the seemingly excellent qualifications and very poor results observed initially.

The explanation turns out to be a pronounced rearward focus shift, easily the most severe your author has ever observed in a Micro Four Thirds lens. Unacceptable really, and a huge hassle for practical use. The sad truth is that the 15/1.7 is a very high performer, but good luck achieving that performance where intended (intended focus vs actual focus for the shooting aperture).

Article continues for subscribers...

Diglloyd Guide to Mirrorless 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 Mirrorless offers comprehensive integrated coverage of most APS-C and full frame mirrorless cameras and lenses.

Special emphasis is placed on Sony full-frame, including Sony lenses and the high performance Zeiss Batis and Zeiss Loxia lenses plus Rokinon/Samyang and others. Fujifilm X, Olympus and Panasonic M4/3, Sigma dp Merrill and dp/sd Quattro are also covered in depth. Years in the making, it offers a wealth of material for choosing and using a mirrorless camera.

  • Make better images by learning how to get the best results right away. For example, the best way to set up your Sony camera.
  • Save money by choosing the right lens for your needs the first time, particularly with the numerous lenses available for Sony.
  • Make better images, a sort of “cheat sheet” saving yourself months or years of ad-hoc learning—best practices and how-to and 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.
  • 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 Sony.

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2021 diglloyd Inc, all rights reserved.