Imagery: Auto - Large Table of Contents

EXCERPT page containing first few paragraphs. 2019-03-24 15:20:25
UA_SEARCH_BOT_null @ 52.206.226.77

Pentax 645Z
Pentax HD 35mm f/3.5 AL [IF]

Aperture Series: Dolls, Close Range (645Z)

The Pentax HD 35mm f/3.5 AL [IF]offers a close focus capability down to 1:4 which means that for its 43.8mm X 32.8mm sensor it can capture an image field of width 175.2mm.

This scene as captured is ~380mm wide, hence the reproduction ratio is about 1:8.6 at a subject to front lens element distance of ~12 inches, ~14 inches from subject to sensor plane.

Depth of field expectations should be appropriate: in depth of field terms, a 35mm DSLSR at f/13 ~= f/10.6 for the 645Z. See Image/Sensor Size, and 645Z Focal Length and F-Stop Equivalence vs DSLR.

Dolls

Mirror lockup with 2 second self timer.
f-stop: 3.5, 5.6, 9, 13, 16
seconds: 0.3, 0.8, 2.0, 4.0, 6.0 ... with ~0.45 stop pull

Article continues for subscribers...

Diglloyd Medium Format is by yearly subscription. Subscribe now for about 27 cents a day ($100/year).
BEST DEAL: get full access to ALL 7 PUBLICATIONS for only 68 cents a day ($249.95)!

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 28 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 3.5,5.6,9,13,16 available in full article

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2019 diglloyd Inc, all rights reserved.