The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Fujifilm XF 10-24mm F4 R WR 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. Rokinon 14mm f2.8 is the longer of the two lenses at 96mm. The Fujifilm XF 10-24mm F4 R WR with a length of 87mm, is 9mm shorter. Besides being longer, the Rokinon 14mm f2.8 also has a larger diameter of 87mm compared to the Fujifilm XF 10-24mm F4 R WR's 78mm 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. Fujifilm XF 10-24mm F4 R WR weighs 385g, which means it is 167g (30%) lighter than the Rokinon 14mm f2.8 which has a weight of 552g.
Lens Mounts
The Fujifilm XF 10-24mm F4 R WR has the Fujifilm X lens mount whereas the Rokinon 14mm f2.8 has the Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm X-S20, Fujifilm X-T5 and Fujifilm X-H2 for the Fujifilm X Mount and Olympus E-5, Olympus E-600 and Olympus E-620 for the Four Thirds Mount.
Rokinon 14mm f2.8 is also available in Canon EF , Nikon F (FX), Pentax KAF, Sony Alpha and Samsung NX mounts.
Focal Range
Fujifilm XF 10-24mm F4 R WR has a focal range of 10-24mm and
2.4X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
15-36mm when used on a APS-C / DX format camera.
On the other hand, the Rokinon 14mm f2.8 is a prime lens with fixed focal lenght of 14mm.