The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox AF 85mm f1.8 XF II and the Samyang 8mm F2.8 Fisheye for their suitability to various photography scenarios:
Size and Weight Comparison
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 8mm F2.8 Fisheye weighs 265g, 45% (219g) lighter than the Viltrox AF 85mm f1.8 XF II's weight of 484g.
Lens Mounts
The Viltrox AF 85mm f1.8 XF II has the Fujifilm X lens mount whereas the Samyang 8mm F2.8 Fisheye has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount and Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount.
Samyang 8mm F2.8 Fisheye is also available in Samsung NX mount.
Focal Range
Viltrox AF 85mm f1.8 XF II is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
127.5mm.
On the other hand, the Samyang 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.
