The Sigma 50-500mm f/4.5-6.3 OS HSM APO DG Zoom Lens is a 10x power high-performance zoom that covers the standard-to-super-telephoto range, with the added advantage of Optical Stabilization. Four SLD (Special Low Dispersion) glass elements provide optimum color correction and sharpness throughout the entire zoom range, and Super Multi-Layer Coating reduces flare and ghosting. The Hyper Sonic Motor ensures quiet and high speed AF as well as full time manual focus capability. Includes lens hood, APS-C hood adapter, step-down filter adapter (95-86mm) and carrying case..