Sigma 17-50mm f2.8 EX DC OS HSM for $349 (C/N/P)

More Shiguma time at B&H Photo, the Sigma 17-50mm f2.8 EX DC OS HSM lens is on sale for $349 with free shipping along with 4% promotional rewards (around $14~ to be used in future purchases) in the Canon, Nikon and Pentax SLR systems… The other two options (Sigma, Sony A) are not on sale, they go for $399…