sigma 70-200mm f 2.8 apo ex dg hsm os fld large aperture telephoto zoom lens for nikon digital dslr 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 amp high-speed auto focus fld glass elements with performance equal to fluorite glass for compensate for color aberration