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 Samyang 14mm F2.8 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 Samyang 14mm F2.8 with a length of 96mm, is 10mm shorter. Besides being longer, the Tokina AT-X 14-20mm F2 Pro DX also has a larger diameter of 89mm compared to the Samyang 14mm F2.8'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. Samyang 14mm F2.8 weighs 552g, 23% (173g) lighter than the Tokina AT-X 14-20mm F2 Pro DX's weight of 725g.
Lens Mounts
The Tokina AT-X 14-20mm F2 Pro DX has the Nikon F (DX) lens mount whereas the Samyang 14mm F2.8 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.
Samyang 14mm F2.8 is also available in Canon EF , Four Thirds, Pentax KAF, Sony Alpha, Sony E and Samsung NX 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 Samyang 14mm F2.8 is a prime lens with fixed focal lenght of 14mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 21mm.
