The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 85mm F1.8 ED UMC CS and the Fujifilm XF 90mm F2 R LM WR 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. Fujifilm XF 90mm F2 R LM WR is the longer of the two lenses at 105mm. The Samyang 85mm F1.8 ED UMC CS with a length of 81mm, is 24mm shorter. Besides being longer, the Fujifilm XF 90mm F2 R LM WR also has a larger diameter of 75mm compared to the Samyang 85mm F1.8 ED UMC CS's 68mm diameter.
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Below you can find a scaled side-by-side image of Samyang 85mm F1.8 ED UMC CS and Fujifilm XF 90mm F2 R LM WR to get a better idea of how their sizes compare in real life.
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 85mm F1.8 ED UMC CS weighs 344g, which means it is 196g (36%) lighter than the Fujifilm XF 90mm F2 R LM WR which has a 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 Lenses in Fujifilm X Mount for Size Comparison
Filter Threads
Both the Samyang 85mm F1.8 ED UMC CS and the Fujifilm XF 90mm F2 R LM WR have the same Filter thread size of 62mm.
Below are links to the 62mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Samyang 85mm F1.8 ED UMC CS and the Fujifilm XF 90mm F2 R LM WR has the same Fujifilm X lens mount. Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-S20, Fujifilm X-T5 and Fujifilm X-H2.
Samyang 85mm F1.8 ED UMC CS is also available in Canon EF-M and Sony E mounts.
Focal Range
Samyang 85mm F1.8 ED UMC CS is a prime lens with fixed focal lenght of 85mm which has an effective (full-frame 35mm equivalent) focal range of
127.5mm when used on a APS-C / DX format camera.
On the other hand, the Fujifilm XF 90mm F2 R LM WR is a prime lens with fixed focal lenght of 90mm which has an effective (full-frame 35mm equivalent) focal range of 135mm when used on a APS-C / DX format camera.