highly recommended.
Best AF for a third party lens, very quick, fairly sharp everywhere (on par with the 12-24 IMO), and f2.8 gets the job done. It's a very utilitarian lens, nothing flashy about it. In many ways, it's like the 12-24 optics wise, sharp, smallish for what it offers, no cool sunstars either, just faster aperture and different focal lengths.
now i'm thinking of just getting the 24-105.
A bit wider and longer. and it's one of the sharpest too









