diglloyd publication
Imagery: Auto - Large Table of Contents
Pentax 645D
Pentax 645D

Aperture Series: Pentax-A 75mm f/2.8 (Mosaic)

This page shows how the Pentax-A 75mm f/2.8 performs.

The Pentax-A 75/2.8 is a manual focus lens, and I bought my copy in Ex+ condition from KEH.com for $159— quite a bargain, especially as it seems to outperform the $1200 (new) 55mm f/2.8 over the frame. There are autofocus versions of the 75mm out there as well, but I have not tested the AF version.

Test scene

The Pentax 645D viewfinder is not symmetric, and thus it’s hard to know left/right framing precisely using the viewfinder. I did my best to frame it evenly, but it’s not quite centered. It is within 0.5° of level.

Contrast was added to counteract the relatively low image contrast (difficult lighting with some veiling flare especially at top).

Article continues for subscribers...

If you’re already a subscriber, CLICK HERE TO LOG IN

diglloyd Advanced Photography

diglloyd Advanced Photography includes hundreds of pages of exclusive coverage and high resolution, Retina-grade example pictures detailing Canon and Nikon DSLR bodies and their lenses, with in-depth analysis of sharpness and contrast, color, bokeh, vignetting, distortion, MTF, and flare. Also included is a wealth of in-context technique and workflow insight. Since 2006, diglloyd Advanced Photography is the authoritative review and on-line reference for discerning Canon and Nikon shooters. Subscriptions cost $ per year.

  1. Explore the table of contents
  2. Check out Lloyd Chambers’ Blog
  3. Subscribe today!
Aperture series 2.8, 4, 5.6, 8 available in full article

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