diglloyd
diglloyd publication
Imagery: Auto - Large Table of Contents

Staircasing on Sharply Defined Edges

All digital cameras manifest artifacts under some conditions, due to the discrete sampling of the image (e.g. the rectangular grid of light-sensitive photosites).

This page explores what one could term “staircasing”, or the tendency of the image to have jagged edges akin to the shape of stairs of a staircase. Such edges tend to occur with sharp focus on straight edges, since any blur tends to smooth out the effect.

Whether one observes a jagged staircase effect, it is reasonable to ask if the image sensor is involved in some unusual way, or if it is perhaps the nature of the technology combined with a particular subject whose details are aligned in an “unfriendly” way for the digital sensor.

Since diffraction increases blur, observing the behavior across the aperture range and in particular at ƒ/16, one can deduce whether the D800E is more prone to staircasing than the D800.

Article continues for subscribers...

Already a subscriber? CLICK HERE TO LOG IN

Since 2006, Diglloyd Advanced Photography is the authoritative review and reference for DSLRs and their lenses: Canon and Nikon primarily, but also Pentax and some medium format. Reviews of key DSLRs are included, but the primary focus is on lens performance. Also included is a wealth of technique and workflow approaches.

DAP includes thousands of pages of exclusive coverage and high resolution Retina-grade examples detailing Canon and Nikon DSLR bodies and their lenses, with in-depth analysis of sharpness and contrast, color, bokeh, vignetting, distortion, MTF, and flare, behavioral and practical usage.

  1. Explore the table of contents
  2. View Lloyd’s Blog
  3. SUBSCRIBE NOW for $ per year.
diglloyd image
Nikon D800E + Zeiss 21/2.8 Distagon @ ƒ/5.6, ISO 200
View Nikon Deals Right Now

diglloyd Home Page | Terms of Use | PRIVACY POLICY | Contact
Copyright © 2008-2015 diglloyd Inc, all rights reserved.