Sigma 50-500mm f/4-6.3 EX APO HSM - Canon EF Fit

The Sigma APO 50-500mm f4-6.3 EX DG HSM Lens for Canon Digital SLR Cameras is a high-magnification zoom lens with a 10x zoom ratio. The advanced optical design of the lens is optimized for digital SLR cameras, and the super coating on each glass surface produces superb color rendition, while reducing flare and ghosting. This lens uses four pieces of Special Low Dispersion (SLD) glass for excellent correction of color aberration throughout the entire zoom range. The Hyper Sonic Motor (HSM) provides quiet high-speed AF function, as well as full-time manual focus capability.