Imagery: Auto - Large Table of Contents

EXCERPT page containing first few paragraphs. 2021-12-04 04:11:08

Canon EOS 1D X

Focusing Accuracy with 85mm f/1.2L II

The Canon 1D X has Canon’s latest generation autofocus technology, so I decided to put it to the most important test to me: can the camera “nail” the focus at f/1.2 at various distances and a variety of subject matter under differing lighting conditions?

I do not expect perfection from any autofocus system, and there are some subjects that are ambiguous even to the human eye (where to focus exactly), but the key is can the camera get it right in the non-ambiguous cases most of the time?

At f/1.2, there is no margin for error.

As this test is all about focus accuracy and the subject matter was purely ad-hoc (of no artistic merit), the images shown here are all actual pixels crops at the point of focus.


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 8 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 full camera resolution, 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.

Canon 1D X + 85mm f/1.2L II @ f/1.2, actual pixels

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.