JayStar86 wrote in post #9356869
IMO... this new Sigma 17-70 is nothing to rave about thus far based on everything on the net. I dont think a "good" copy will remedy this lenses shortcomings that we really have already brought up in this thread... this lens has an awesome FL range for a crop body and thats really the only good thing to be said about this lens and then its just all downhill after that.... if your looking for a lens with a wide coverage of FL range all in one... it would have to be the Canon 15-85 at this point on a crop body. If you want extreme sharpness and IQ then look for the Tamron or other Canon lenses.
I own the Sigma and, while not a bad lens, it's not a good one either. I bought it mainly because of her price, but its photos make me remember the more mediocre non-DSLR cameras I owned in the past. There might be some sharper 17-70 Sigmas, but, generally speaking, an average 17-70 is not worthy of a >800 EUR camera. Save some more and buy a Canon or the Tokina 11-16 - if you want a wide lens. Besides, the Sigma doesn't have OS and I found this to be an important drawback.