The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tokina AT-X 14-20mm F2 Pro DX and the Sigma 24-35mm F2 DG HSM A 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 24-35mm F2 DG HSM A is the longer of the two lenses at 123mm. The Tokina AT-X 14-20mm F2 Pro DX with a length of 106mm, is 17mm shorter. On the other hand, the Tokina AT-X 14-20mm F2 Pro DX has a larger diameter of 89mm compared to the Sigma 24-35mm F2 DG HSM A'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. Tokina AT-X 14-20mm F2 Pro DX weighs 725g, which means it is 216g (22%) lighter than the Sigma 24-35mm F2 DG HSM A which has a weight of 941g.
Filter Threads
Both the Tokina AT-X 14-20mm F2 Pro DX and the Sigma 24-35mm F2 DG HSM A have the same Filter thread size of 82mm.
Below are links to the 82mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Tokina AT-X 14-20mm F2 Pro DX has the Nikon F (DX) lens mount whereas the Sigma 24-35mm F2 DG HSM A has the Nikon F (FX) 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 Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Tokina AT-X 14-20mm F2 Pro DX is also available in the Canon EF mount.
Sigma 24-35mm F2 DG HSM A is also available in Canon EF and Sigma SA mounts.
Focal Range
Tokina AT-X 14-20mm F2 Pro DX has a focal range of 14-20mm and
1.4X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
21-30mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 24-35mm F2 DG HSM A has a focal range of 24-35mm and 1.5X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 36 - 52.5mm.
