The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 14mm F1.8 DG HSM and the Tokina 11-16mm f2.8 DX for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Sigma 14mm F1.8 DG HSM is the longer of the two lenses at 126mm. The Tokina 11-16mm f2.8 DX with a length of 89mm is 37mm shorter. Besides being longer, the Sigma 14mm F1.8 DG HSM also has a larger diameter of 95mm compared to Tokina 11-16mm f2.8 DX's 84mm diameter.
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, 52% (610g) lighter than the Sigma 14mm F1.8 DG HSM's weight of 1170g.
Both Sigma 14mm F1.8 DG HSM has the Nikon F (FX) lens mount whereas the Tokina 11-16mm f2.8 DX has the Nikon F (DX) lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount and Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount.
Sigma 14mm F1.8 DG HSM is also available in Sigma SA and Canon EF mounts.
Tokina 11-16mm f2.8 DX is also available in Canon EF and Sony Alpha mounts.
Sigma 14mm F1.8 DG HSM is a prime lens with fixed focal lenght of 14mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 21mm.
Tokina 11-16mm f2.8 DX has a focal range of 11-16mm and 1.5X zoom ratio which has a 35mm equivalent focal range of 16.5-24mm when used on a APS-C / DX format camera.