Imagery: Auto - Large Table of Contents

EXCERPT page containing first few paragraphs. 2024-03-28 04:26:30
UA_SEARCH_BOT_null @ 3.89.116.152

For full access, subscribe here. Or click title to login.

Pentax 645Z

Pentax 90/2.8 Focus Shift Assessment

Shot on the Pentax 645Z.

Displacement of the zone of sharp focus that comes with stopping down is a serious challenge when working with high resolution digital sensors, so an assessment of focus shift for each lens is a critical part of the shot discipline for any serious photographer.

See Making Sharp Images for an in-depth discussion of focus shift.

Focus shift with the 90/2.8

This crop taken from the Dolls aperture series.

Article continues for subscribers...

Diglloyd Medium Format is by yearly subscription. Subscribe now for about 33 cents a day ($120/year).
BEST DEAL: get full access to ALL 8 PUBLICATIONS for only about 75 cents a day!

Diglloyd Medium Format covers medium format camera systems, including the Hasselblad X1D and Fujifilm GFX.

These systems are hugely expensive, so make the right choice for your own needs (full frame vs medium format).

  • In-depth lens evaluations covering behaviors not likely to be found anywhere else, based on real-world field shooting.
  • How to configure menus and buttons and best operating practices, gotchas and how-to.
  • Real world examples with insights found nowhere else. Make sharper images just by understanding lens and camera behaviors.
  • Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to 100 megapixels filling up to 5K display, plus large crops.
  • 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.
Aperture series 2.8,4,5.6,8,11,16,22 available in full article

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | X.com/diglloyd
Copyright © 2022 diglloyd Inc, all rights reserved.