10-20-2013, 09:30 AM
The Sigma 17-50mm f2.8 EX DC OS HSM is a nicer lens than the Tamron you mention. It is better built, gives a bit better results,has a nicer focus motor. It is a bit more expensive and heavy. A very nice lens. The Nikon AF-S 17-55mm f2.8 DX is a nice lens too, but heavier and bigger, and quite a bit more expensive without offering VR.
Then there is the new Sigma 17-70mm "C", offering a bigger reach and having nice optics as well.
Then there is the new Sigma 17-70mm "C", offering a bigger reach and having nice optics as well.