Sigma 18-200mm f/3.5-6.3 II DC OS HSM Overview

The Sigma 18-200mm f/3.5-6.3 II DC OS HSM offers a broad shooting range from wide angle to telephoto, covering approximately 28-300mm (equivalent) on APS-C cameras. Despite this reach, the 18-200mm is relatively compact. Construction consists of 18 elements in 14 groups, and includes one FLD ('F' Low Dispersion) glass element, which has performance equal to fluorite, two SLD (Special Low Dispersion) glass elements, two molded aspherical elements and one hybrid aspherical element. Sigma’s HSM (Hyper Sonic Motor) ensures fast and quiet auto-focusing, and an optical stabilization system helps keep things stable at the long end of the zoom.