Sigma 17-50mm F2.8 EX DC OS HSM is an Auto Focus (AF) Standard Zoom
lens with APS-C / DX max sensor coverage and it is designed to be used with Sigma SA mount cameras.
Sigma 17-50mm F2.8 EX DC OS HSM is compatible with cameras that have Sigma SA lens mount.Some of the latest released cameras with Sigma SA lens mount are Sigma SD1 Merrill
, Sigma SD1
Max sensor coverage of Sigma 17-50mm F2.8 EX DC OS HSM is APS-C / DX.
Sigma 17-50mm F2.8 EX DC OS HSM has a focal range of 17-50mm and 2.9X zoom ratio. When mounted on a APS-C / DX format camera, it provides an 35mm (FF) equivalent of 25.5 - 75mm.
Optical Image Stabilization
Sigma 17-50mm F2.8 EX DC OS HSM features an optical image stabilization system which helps to reduce the blur that occurs due to shaking during hand-held shooting.
Sigma 17-50mm F2.8 EX DC OS HSM has a constant max aperture of f2.8 from 17mm all the way to the 50mm .