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 II 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 14mm F1.8 DG HSM is the longer of the two lenses at 126mm. The Tokina 11-16mm f2.8 DX II 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 the Tokina 11-16mm f2.8 DX II's 84mm 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. Tokina 11-16mm f2.8 DX II weighs 560g, 52% (610g) lighter than the Sigma 14mm F1.8 DG HSM's weight of 1170g.
Lens Mounts
The Sigma 14mm F1.8 DG HSM has the Nikon F (FX) lens mount whereas the Tokina 11-16mm f2.8 DX II 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 II is also available in Canon EF and Sony Alpha mounts.
Focal Range
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 a 35mm (FF) equivalent of
21mm.
On the other hand, the Tokina 11-16mm f2.8 DX II has a focal range of 11-16mm and 1.5X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 16.5-24mm when used on a APS-C / DX format camera.