This page assesses what happens to image quality from f/8 to f/16, the contrast-robbing effects of diffraction being the concern.
For in-depth coverage of diffraction and depth of field and more, see Making Sharp Images.
Contrast and diffraction
Similar contrast loss should be expected from the Pentax 645D, but the degradation from diffraction depends on how good the optics are to begin with, and might also depend to a small extent on sensor technology.
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.