Sigma 17-50mm F2.8 EX DC OS HSM lens Sample Images
The Sigma 17-50mm F2.8 EX DC OS HSM lens is a useful large-aperture standard zoom lens for APS-C format digital SLRs. It was released in 2010 for $519. Below are several sample images of Sigma 17-50mm F2.8 EX DC OS… Read moreSigma 17-50mm F2.8 EX DC OS HSM lens Sample Images