Hi guys im looking to upgrade from my kit lens and iv been doing some reading up, iv come to the conclusion that most if not all of the canon lenses in the same focal length as the sigma are out of my price range so iv been looking in to the sigma 17-70 os hsm 2013 model, i can get it for the rrp price of £369 from a local shop but is it any good, i like the fact that its 17-70 and that its a 2.8 - 4 which is a full stop down from my 18-55 3.5-5.6 but are there any things to look out for.
Thanks in advance
Nick