The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 16mm F1.4 C and the Tokina AT-X 14-20mm F2 Pro DX 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 AT-X 14-20mm F2 Pro DX is the longer of the two lenses at 106mm. The Sigma 16mm F1.4 C with a length of 92mm, is 14mm shorter. Besides being longer, the Tokina AT-X 14-20mm F2 Pro DX also has a larger diameter of 89mm compared to the Sigma 16mm F1.4 C's 72mm 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 16mm F1.4 C weighs 405g, which means it is 320g (44%) lighter than the Tokina AT-X 14-20mm F2 Pro DX which has a weight of 725g.
Filter Threads
The Sigma 16mm F1.4 C has a filter size of 67mm whereas the Tokina AT-X 14-20mm F2 Pro DX has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Sigma 16mm F1.4 C:
And these are the 82mm filters that we recommend for the Tokina AT-X 14-20mm F2 Pro DX:
Lens Mounts
The Sigma 16mm F1.4 C has the Nikon Z lens mount whereas the Tokina AT-X 14-20mm F2 Pro DX has the Nikon F (DX) lens mount. Some of the latest released cameras that are compatible with these mounts are RED Komodo-X 6K Z, Nikon Z50 II and Nikon Z30 for the Nikon Z Mount and Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount.
Sigma 16mm F1.4 C is also available in the Canon RF mount.
Tokina AT-X 14-20mm F2 Pro DX is also available in Canon EF mount.
Focal Range
Sigma 16mm F1.4 C is a prime lens with fixed focal lenght of 16mm which has an effective (full-frame 35mm equivalent) focal range of
24mm when used on a APS-C / DX format camera.
On the other hand, the 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.
