Steve's Digicams Forums

Steve's Digicams Forums (https://forums.steves-digicams.com/)
-   Canon Lenses (https://forums.steves-digicams.com/canon-lenses-61/)
-   -   wat does ex dc and do stand for? (https://forums.steves-digicams.com/canon-lenses-61/wat-does-ex-dc-do-stand-121698/)

Arfi May 15, 2007 7:52 PM

wat does ex dc and do stand for?

JohnG May 15, 2007 8:12 PM

I'm going to take a wild guess and say you're looking at Sigma lenses.

EX is their designation for their professional line of lenses
DC is their designation for lenses sized specifically for APS-C or smaller sensors (i.e. not designed for use on film, full size sensor or aps-H size sensor cameras)

DO is a canon term:

DO — stands for Diffractive Optic and is used on Canon lenses which utilize a unique diffraction grating to control chromatic aberration and reduce lens size and weight.


All times are GMT -5. The time now is 5:49 PM.