The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Fujifilm XF 90mm F2 R LM WR and the Samyang 300mm f6.3 for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Fujifilm XF 90mm F2 R LM WR is the longer of the two lenses at 105mm. The Samyang 300mm f6.3 with a length of 74mm is 31mm shorter. Besides being longer, the Fujifilm XF 90mm F2 R LM WR also has a larger diameter of 75mm compared to Samyang 300mm f6.3's 65mm diameter.
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, 41% (222g) lighter than the Fujifilm XF 90mm F2 R LM WR's weight of 540g.
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
Both Fujifilm XF 90mm F2 R LM WR and 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.
Fujifilm XF 90mm F2 R LM WR is a prime lens with fixed focal lenght of 90mm which has a 35mm equivalent focal range of 135mm 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 a 35mm equivalent focal range of 135mm when used on a APS-C / DX format camera.