The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tokina 11-16mm f2.8 DX II and the Rokinon 8mm f3.5 Fisheye 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 11-16mm f2.8 DX II is the longer of the two lenses at 89mm. The Rokinon 8mm f3.5 Fisheye with a length of 77mm, is 12mm shorter. Besides being longer, the Tokina 11-16mm f2.8 DX II also has a larger diameter of 84mm compared to the Rokinon 8mm f3.5 Fisheye's 75mm 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. Rokinon 8mm f3.5 Fisheye weighs 443g, 20% (117g) lighter than the Tokina 11-16mm f2.8 DX II's weight of 560g.
Lens Mounts
Both the Tokina 11-16mm f2.8 DX II and the Rokinon 8mm f3.5 Fisheye has the same Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A68, Sony A77 II and Sony A58.
Tokina 11-16mm f2.8 DX II is also available in the Canon EF and Nikon F (DX) mounts.
Rokinon 8mm f3.5 Fisheye is also available in Canon EF , Nikon F (FX), Four Thirds, Pentax KAF and Samsung NX mounts.
Focal Range
Tokina 11-16mm f2.8 DX II has a focal range of 11-16mm and
1.5X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
16.5-24mm when used on a APS-C / DX format camera.
On the other hand, the Rokinon 8mm f3.5 Fisheye is a prime lens with fixed focal lenght of 8mm which has an effective (full-frame 35mm equivalent) focal range of 12mm when used on a APS-C / DX format camera.
