Imagery: Auto - Large Table of Contents

EXCERPT page containing first few paragraphs. 2017-12-16 14:33:54
UA_SEARCH_BOT_null @ 54.90.159.192

Testing for a Misaligned Sensor

This page discusses how to test for a misaligned sensor/lens mount.

The good news for anyone with with a misaligned sensor/lens mount: Nikon service ought to be able to adjust the sensor to lens mount alignment. That’s exactly what I did some years back with my Nikon D800E; it was out of alignment just like this D850 (same symptoms), but when it came back from Nikon the blur problems were gone. I have heard similar experiences from competent readers.

In the case of the bad Nikon D850, the first symptom, one I had not encountered before, was a displacement of infinity focus far beyond the infinity mark and to the mechanical limits of my lenses. That was such a strange behavior that it ought to have occurred to me that something else might be off, and indeed the sensor was also misaligned (not parallel to the lens mount), not just at the wrong distance to the lens mount.

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.

Variants D850,D810 available in full article
f1.8 @ 1/4000 sec, ISO 64; 2017-10-01 15:17:04
NIKON D850 + Sigma 135mm f/1.8 DG HSM Art

[low-res image for bot]

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2008-2017 diglloyd Inc, all rights reserved.