Sigma 70-200mm f/2.8 EX DG OS HSM Lens for Sigma Digital and Conventional SLR Camera

Designed for use with full frame digital SLR cameras
May also be used with smaller APS-C size sensors with a corresponding effective increase in focal length to about 100 to 300mm with most cameras
Offers Sigma’s OS system (Optical Stabilization) allowing handheld photography even in low-light situation
HSM (Hyper Sonic Motor) ensures a quiet and high-speed auto focus
FLD glass elements with performance equal to fluorite glass for compensate for color aberration