Imagery: Auto - Large Table of Contents

EXCERPT page containing first few paragraphs. 2022-08-11 13:47:08

Sony NEX-7

Color Shading on NEX-7 with M-mount Lenses

This page offers color shading aperture series for a selection of M-mount lenses: Leica M, Zeiss ZM, Voigtlander.

Shown is the color uniformity across the aperture range for each lens— “color shading”or in a sense, “color vignetting”. The effect is caused by interaction with the sensor cover glass over the digital sensor and it is the ray angle from the exit pupil which is most responsible.

However, wide-aperture lenses (f/1.2, f/1.4, f/2) also have a color shift with stopping down, and this interacts with the color shading issue. The two are almost certainly related, and probably share the same inherent cause— ray angle.

Since M-mount lenses were nearly all designed with film-era bodies in mind (some incorporate a few tweaks for current digital), we can expect that color shading due to ray angle will be an issue, with wider angles exhibiting more of an issue, and faster lenses also having more trouble at the first aperture or two.

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 © 2022 diglloyd Inc, all rights reserved.