The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron SP 35mm F1.4 Di USD and the Tokina AT-X 14-20mm F2 Pro DX for their suitability to various photography scenarios:
Size and Weight Comparison
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, 9% (80g) lighter than the Tamron SP 35mm F1.4 Di USD's weight of 805g.
Filter Threads
The Tamron SP 35mm F1.4 Di USD has a filter size of 72mm 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 72mm filters that we recommend you to consider for the Tamron SP 35mm F1.4 Di USD:
And these are the 82mm filters that we recommend for the Tokina AT-X 14-20mm F2 Pro DX:
Lens Mounts
Both the Tamron SP 35mm F1.4 Di USD and the Tokina AT-X 14-20mm F2 Pro DX has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K.
Tamron SP 35mm F1.4 Di USD is also available in the Nikon F (FX) mount.
Tokina AT-X 14-20mm F2 Pro DX is also available in Nikon F (DX) mount.
Focal Range
Tamron SP 35mm F1.4 Di USD is a prime lens with fixed focal lenght of 35mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
56mm.
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 22.4-32mm when used on a APS-C / DX format camera.