The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 24-70mm F2.8 EX DG and the Sigma 24-70mm F2.8 EX DG HSM for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Sigma 24-70mm F2.8 EX DG is the longer of the two lenses at 116mm. The Sigma 24-70mm F2.8 EX DG HSM with a length of 95mm, is 21mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 89mm.
The weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Sigma 24-70mm F2.8 EX DG weighs 715g, which means it is 75g (9%) lighter than the Sigma 24-70mm F2.8 EX DG HSM which has a weight of 790g.
Below you can find the dimension and weight table of the Standard Zoom Lenses in Canon EF Mount for size comparison purposes.
Standard Zoom Lenses in Canon EF Mount for Size Comparison
Lens Mounts
Both the Sigma 24-70mm F2.8 EX DG and the Sigma 24-70mm F2.8 EX DG HSM has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Sigma 24-70mm F2.8 EX DG is also available in Pentax KAF , Sony Alpha, Sigma SA and Nikon F (FX) mounts.
Sigma 24-70mm F2.8 EX DG HSM is also available in Pentax KAF3 , Sony Alpha, Sigma SA and Nikon F (FX) mounts.
Focal Range
Both lenses have the same focal range of 24-70mm and the fastest aperture of F2.8.