A sharp, compact, fast, and ruggedly constructed pro-caliber lens that's
priced for all users.
Originally published September 2005.
WHAT YOU SHOULD KNOW:
The fourth generation of Sigma's pro-caliber, EX-series 28-70mm f/2.8, this version features a smaller filter size (from 77mm down to 67mm), improved coatings to control ghosting with digital SLRs, a significantly closer focusing distance (from 19 down to 12 inches), and now a zoom lock. Compared to the Tamron 28-75mm f/2.8, it's slightly more compact (3.4 vs. 3.6 inches), but otherwise physically similar and comparably priced ($359).