diglloyd
diglloyd publication
Imagery: Auto - Large Table of Contents

Canon 70-200 L zooms + EF Extender III 2X

Let’s see how the Canon EF 2X Extender performs on Canon’s two “L” zooms:

The focal length with the Extender 2X zoomed to 200mm is a nominal 400mm, but the two zooms don’t agree on what 200mm is (both zoomed to the 200mm mark), so the actual sizes are slightly different.

Magnifying errors

Any lens which is not assembled with precision will have optical symmetry or centering errors which a 2X converter will of course magnify by 2X, making visible optical issues that might be subtle to see without the extender.

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!
img
Canon 5DMark II + 70-200mm f/2.8L IS II + EF Extender 2X

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