Sigma 120-400mm F4.5-5.6 DG OS HSM is an Auto Focus (AF)
Telephoto Zoom lens with 35mm FF max sensor coverage and it is designed to be used with Canon EF mount cameras.
Lens Mount
Sigma 120-400mm F4.5-5.6 DG OS HSM is compatible with cameras that have Canon EF lens mount.Some of the latest released cameras with Canon EF lens mount are
Canon 1D X III,
Canon 6D MII and
Canon 5D MIV.
Sensor Coverage
Max sensor coverage of Sigma 120-400mm F4.5-5.6 DG OS HSM is 35mm FF.
Focal Range
Sigma 120-400mm F4.5-5.6 DG OS HSM has a focal range of 120-400mm and 3.3X zoom ratio.
Optical Image Stabilization
Sigma 120-400mm F4.5-5.6 DG OS HSM features an optical image stabilization system which helps to reduce the blur that occurs due to shaking during hand-held shooting.
Zoom Method
Rotary (extending)
Aperture
Sigma 120-400mm F4.5-5.6 DG OS HSM has a max aperture of f4.5 at 120mm and max aperture of f5.6 at 400mm .