Sigma 24-105mm F4 DG OS HSM is an Auto Focus (AF) Standard Zoom
lens with 35mm FF max sensor coverage and it is designed to be used with Sony Alpha mount cameras.
Sigma 24-105mm F4 DG OS HSM is compatible with cameras that have Sony Alpha lens mount.Some of the latest released cameras with Sony Alpha lens mount are Sony A99 II
, Sony A68
and Sony A77 II
Max sensor coverage of Sigma 24-105mm F4 DG OS HSM is 35mm FF.
Sigma 24-105mm F4 DG OS HSM has a focal range of 24-105mm and 4.4X zoom ratio. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 36 - 157.5mm.
Optical Image Stabilization
Sigma 24-105mm F4 DG OS HSM features an optical image stabilization system which helps to reduce the blur that occurs due to shaking during hand-held shooting.
Sigma 24-105mm F4 DG OS HSM features Rotary (extending) zoom method where the length of the lens changes as you zoom in or out. This makes it possible to design the lens with a smaller minimum length ( generally when it is zoomed out) compared to internal zoom lenses. The disadvantages of this design are being harder to seal against dust and moisture, weight balance shifting while zooming and zoom creep in certain lenses.
Sigma 24-105mm F4 DG OS HSM is a fixed aperture lens with a constant max aperture of f4 from 24mm all the way to the 105mm .
Sigma 24-105mm F4 DG OS HSM's optical formula consists of 19 elements in 14 groups.