Imagery: Auto - Large Table of Contents

EXCERPT page containing first few paragraphs. 2019-05-25 11:20:18
UA_SEARCH_BOT_null @ 54.234.227.202

Olympus M. Zuiko 17mm f/1.8

Aperture Series: Windows (Olympus E-M5)

This aperture series was taken to evaluate sharpness for a planar subject to evaluate field curvature, and also to evaluate distortion and vignetting.

The lighting was the gray light of winter dusk (moderately blue), and the Olympus E-M5 generally does not provide pleasing results under such conditions. But the results are instructive, even if the subject is boring.

The windows being covered by screens, a prominent moiré pattern quickly develops, showing the suggesting the Olympus E-M5 has a weak anti-aliasing filter, though screens in general can cause moiré no matter what, so this is not a proof.

Windows

Focus was right in the middle using autofocus, which is quite accurate under such conditions (and manual focus is a challenge with the 17/1.8, due to a high level of aberrations wide open which cause a low contrast image to be hard to focus).

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.

Aperture series 1.8, 2, 2.8, 4, 5.6, 8, 11 available in full article

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2019 diglloyd Inc, all rights reserved.