The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 14-24mm F2.8 DG HSM and the Tokina 11-16mm f2.8 DX 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 14-24mm F2.8 DG HSM is the longer of the two lenses at 135mm. The Tokina 11-16mm f2.8 DX with a length of 89mm, is 46mm shorter. Besides being longer, the Sigma 14-24mm F2.8 DG HSM also has a larger diameter of 96mm compared to the Tokina 11-16mm f2.8 DX's 84mm diameter.
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. Tokina 11-16mm f2.8 DX weighs 560g, 51% (590g) lighter than the Sigma 14-24mm F2.8 DG HSM's weight of 1150g.
Below you can find the dimension and weight table of the Wideangle Zoom Lenses in Canon EF Mount for size comparison purposes.
Wideangle Zoom Lenses in Canon EF Mount for Size Comparison
Both the Sigma 14-24mm F2.8 DG HSM and the Tokina 11-16mm f2.8 DX 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 14-24mm F2.8 DG HSM is also available in Nikon F (FX) and Sigma SA mounts.
Tokina 11-16mm f2.8 DX is also available in Nikon F (DX) and Sony Alpha mounts.
Sigma 14-24mm F2.8 DG HSM has a focal range of 14-24mm and 1.7X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 22.4 - 38.4mm.
Tokina 11-16mm f2.8 DX has a focal range of 11-16mm and 1.5X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 17.6-25.6mm when used on a APS-C / DX format camera.