The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tokina 11-16mm f2.8 DX II and the Sigma 8-16mm F4.5-5.6 DC 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 8-16mm F4.5-5.6 DC HSM is the longer of the two lenses at 106mm. The Tokina 11-16mm f2.8 DX II with a length of 89mm, is 17mm shorter. On the other hand, the Tokina 11-16mm f2.8 DX II has a larger diameter of 84mm compared to the Sigma 8-16mm F4.5-5.6 DC HSM's 75mm 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 8-16mm F4.5-5.6 DC HSM weighs 555g, 0% (5g) lighter than the Tokina 11-16mm f2.8 DX II's weight of 560g.
Lens Mounts
The Tokina 11-16mm f2.8 DX II has the Nikon F (DX) lens mount whereas the Sigma 8-16mm F4.5-5.6 DC HSM has the Sony Alpha lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount and Sony A68, Sony A77 II and Sony A58 for the Sony Alpha Mount.
Tokina 11-16mm f2.8 DX II is also available in the Canon EF and Sony Alpha mounts.
Sigma 8-16mm F4.5-5.6 DC HSM is also available in Canon EF , Pentax KAF3, Sigma SA and Nikon F (DX) mounts.
Focal Range
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.
On the other hand, the Sigma 8-16mm F4.5-5.6 DC HSM has a focal range of 8-16mm and 2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 12-24mm when used on a APS-C / DX format camera.
