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 DG OS HSM and the Sigma 12-24mm F4 DG HSM for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Sigma 12-24mm F4 DG HSM is the longer of the two lenses at 132mm. The Sigma 24-70mm F2.8 DG OS HSM with a length of 108mm, is 24mm shorter. Besides being longer, the Sigma 12-24mm F4 DG HSM also has a larger diameter of 101mm compared to the Sigma 24-70mm F2.8 DG OS HSM's 88mm diameter.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Sigma 24-70mm F2.8 DG OS HSM weighs 1020g, which means it is 131g (11%) lighter than the Sigma 12-24mm F4 DG HSM which has a weight of 1151g.
Lens Mounts
Both the Sigma 24-70mm F2.8 DG OS HSM and the Sigma 12-24mm F4 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 DG OS HSM is also available in Sigma SA and Nikon F (FX) mounts.
Sigma 12-24mm F4 DG HSM is also available in Sigma SA and Nikon F (FX) mounts.
Focal Range
Sigma 24-70mm F2.8 DG OS HSM has a focal range of 24-70mm and
2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
38.4 - 112mm.
On the other hand, the Sigma 12-24mm F4 DG HSM has a focal range of 12-24mm and 2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 19.2 - 38.4mm.