Imagery: Auto - Large Table of Contents

EXCERPT page containing first few paragraphs. 2019-03-20 11:30:42
UA_SEARCH_BOT_null @ 34.207.146.166

36MP Nikon D810
Nikon AF-S NIKKOR 70-200mm f/2.8E FL ED VR

Nikon D810 Autofocus Compensation for Focus Shift

Firmware on the Nikon D810 + 70-200/2.8E reads:
C = 1.12
L = 2.015

This page shows that at least with the Nikon 70-200mm f/2.8E FL ED VR, the Nikon D810 delivers radically different focus depending on the shooting aperture. This looks to be a firmware design that compensates for focus shift. See the focus shift results for the 70-200mm f/2.8E FL ED VR.

These findings here match up with what one would expect and hope for from the camera for focus shift compensation for shooting aperture.

Focus shift compensation is a sophisticated feature found on few cameras, but it is a Very Good Thing if one is using the conventional autofocus system—shoot and let the camera worry about focus shift. However, if one is focusing manually (wide open) and then shooting stopped-down, the focus shift applies and sharpness will be damaged.

Article continues for subscribers...

Diglloyd Advanced DSLR is by yearly subscription. Subscribe now for about 16 cents a day ($60/year).
BEST DEAL: get full access to ALL 7 PUBLICATIONS for only 68 cents a day ($249.95)!

Diglloyd DAP is DSLR-oriented, but also contains workflow and other topics. Much of the focus is on Canon and Nikon but also Pentax and Pentax medium format.

Special emphasis is placed on lens evaluation, focusing on Canon and Nikon and Sigma lenses, but with a few others like Rokinon/Samyang.

  • 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 some of the new Sigma Art lenses vs Nikon and Canon.
  • Workflow discusses image organization, raw conversion and post processing. Many examples show processing parameters for direct insight into how the image was converted.
  • Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to 28 megapixels filling up to 5K display, 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 Nikon or on Canon or on Pentax.

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.