Sigma 17-50mm Lens F2.8 EX DC OS HSM - Canon Mount (Electronics)
Bel objective, bright, fast, but not so quiet, perfect for multi-purpose use, opening 2.8 is top (especially at this price), the sigma? the cover and the available sun visor. Small flat (but hey, it's nitpicking) but ... what vignetting at 17mm! Othe