Sigma 17-50mm f2.8 EX DC OS HSM and $12 Rewards for $399 (C/N/A/P/Si)

F2.8 zooms have a special place in photography, which is why there are APS-C versions as well. Which brings us to the Sigma 17mm-50mm f2.8 EX DC OS HSM, on sale for $399 with free shipping and $12~ promotional rewards at Adorama in the Canon, Nikon, Sony Alpha, Pentax K, and Sigma SA SLR mounts. The Sony and Pentax are not OS. This is part of the Adorama 4th of July specials.