We did a quick posting when the Sigma 70-200mm F/2.8 EX APO DS HSM OS lens came in, but it’s now time to start the full field review. For those of you in the dark, this lens is designed in Canon mount and marketed as a more affordable option to Canon’s 70-200mm F/2.8 L IS II. Because we tend to use too many letters of the alphabet and I believe they need to be conserved before the Sigma lenses’ name gets any longer, it will be referred to as the Sigma 70-200mm F/2.8 EX OS.
