The Sigma 18-35mm F1.8 DC HSM Art lens is the world’s first constant F1.8 zoom lens for DSLRs with APS-C sized sensors. It was released in April 2013 for $749. Below are several sample images of Sigma 18-35mm F1.8 DC… Read moreSigma 18-35mm F1.8 DC HSM Art lens Sample Images