The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox 13mm F1.4 XF and the Rokinon 8mm f2.8 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. Viltrox 13mm F1.4 XF is the longer of the two lenses at 90mm. The Rokinon 8mm f2.8 Fisheye with a length of 77mm, is 13mm shorter. On the other hand, the Rokinon 8mm f2.8 Fisheye has a larger diameter of 75mm compared to the Viltrox 13mm F1.4 XF's 74mm 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. Viltrox 13mm F1.4 XF weighs 420g, which means it is 23g (5%) lighter than the Rokinon 8mm f2.8 Fisheye which has a weight of 443g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Fujifilm X Mount for size comparison purposes.
Ultra-Wideangle Lenses in Fujifilm X Mount for Size Comparison
Lens Mounts
Both the Viltrox 13mm F1.4 XF and the Rokinon 8mm f2.8 Fisheye has the same Fujifilm X lens mount. Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5.
Focal Range
Viltrox 13mm F1.4 XF is a prime lens with fixed focal lenght of 13mm which has an effective (full-frame 35mm equivalent) focal range of
19.5mm when used on a APS-C / DX format camera.
On the other hand, the Rokinon 8mm f2.8 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.
