The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tokina 17-35mm f4 Pro FX and the Sigma 10-20mm F3.5 EX 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. Tokina 17-35mm f4 Pro FX is the longer of the two lenses at 94mm. The Sigma 10-20mm F3.5 EX DC HSM with a length of 88mm, is 6mm shorter. Besides being longer, the Tokina 17-35mm f4 Pro FX also has a larger diameter of 89mm compared to the Sigma 10-20mm F3.5 EX DC HSM's 87mm 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 10-20mm F3.5 EX DC HSM weighs 520g, 13% (80g) lighter than the Tokina 17-35mm f4 Pro FX's weight of 600g.
Filter Threads
Both the Tokina 17-35mm f4 Pro FX and the Sigma 10-20mm F3.5 EX DC HSM 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 17-35mm f4 Pro FX has the Nikon F (FX) lens mount whereas the Sigma 10-20mm F3.5 EX DC HSM 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.
Tokina 17-35mm f4 Pro FX is also available in the Canon EF mount.
Sigma 10-20mm F3.5 EX DC HSM is also available in Canon EF , Pentax KAF3, Sony Alpha and Sigma SA mounts.
Focal Range
Tokina 17-35mm f4 Pro FX has a focal range of 17-35mm and
2.1X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
25.5 - 52.5mm.
On the other hand, the Sigma 10-20mm F3.5 EX DC HSM has a focal range of 10-20mm and 2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 15-30mm when used on a APS-C / DX format camera.
