The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Fujifilm XF 200mm F2 R LM OIS WR and the Samyang 300mm f6.3 for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Fujifilm XF 200mm F2 R LM OIS WR is the longer of the two lenses at 206mm. The Samyang 300mm f6.3 with a length of 74mm, is 132mm shorter. On the other hand, the Samyang 300mm f6.3 has a larger diameter of 65mm compared to the Fujifilm XF 200mm F2 R LM OIS WR's 61mm diameter.
The weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Samyang 300mm f6.3 weighs 318g, 85% (1947g) lighter than the Fujifilm XF 200mm F2 R LM OIS WR's weight of 2265g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Fujifilm X Mount for size comparison purposes.
Telephoto Prime Lenses in Fujifilm X Mount for Size Comparison
Lens Mounts
Both the Fujifilm XF 200mm F2 R LM OIS WR and the Samyang 300mm f6.3 has the same Fujifilm X lens mount. Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-T5, Fujifilm X-H2 and Fujifilm X-H2S.
Samyang 300mm f6.3 is also available in Canon EF-M , Micro Four Thirds and Sony E mounts.
Focal Range
Fujifilm XF 200mm F2 R LM OIS WR is a prime lens with fixed focal lenght of 200mm which has an effective (full-frame 35mm equivalent) focal range of 300mm when used on a APS-C / DX format camera. Samyang 300mm f6.3 is a prime lens with fixed focal lenght of 300mm which has an effective (full-frame 35mm equivalent) focal range of 450mm when used on a APS-C / DX format camera.