The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Venus 17mm F4 Zero-D GFX and the Rokinon 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. Venus 17mm F4 Zero-D GFX is the longer of the two lenses at 125mm. The Rokinon 14mm f2.8 with a length of 96mm, is 29mm shorter. On the other hand, the Rokinon 14mm f2.8 has a larger diameter of 87mm compared to the Venus 17mm F4 Zero-D GFX's 61mm 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 14mm f2.8 weighs 552g, 33% (277g) lighter than the Venus 17mm F4 Zero-D GFX's weight of 829g.
Lens Mounts
The Venus 17mm F4 Zero-D GFX has the Fujifilm G lens mount whereas the Rokinon 14mm f2.8 has the Sony Alpha lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm GFX Eterna 55, Fujifilm GFX 100S II and Fujifilm GFX 100 II for the Fujifilm G Mount and Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount.
Rokinon 14mm f2.8 is also available in Canon EF , Nikon F (FX), Four Thirds, Pentax KAF and Samsung NX mounts.
Focal Range
Venus 17mm F4 Zero-D GFX is a prime lens with fixed focal lenght of 17mm.
On the other hand, the Rokinon 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.