The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Fujifilm XF 27mm F2.8 R WR and the Samyang 20mm F1.8 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. Samyang 20mm F1.8 is the longer of the two lenses at 88mm. The Fujifilm XF 27mm F2.8 R WR with a length of 23mm, is 65mm shorter. Besides being longer, the Samyang 20mm F1.8 also has a larger diameter of 83mm compared to the Fujifilm XF 27mm F2.8 R WR's 62mm 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. Fujifilm XF 27mm F2.8 R WR weighs 84g, which means it is 413g (83%) lighter than the Samyang 20mm F1.8 which has a weight of 497g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Fujifilm X Mount for size comparison purposes.
Wideangle Prime Lenses in Fujifilm X Mount for Size Comparison
Both the Fujifilm XF 27mm F2.8 R WR and the Samyang 20mm F1.8 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 20mm F1.8 is also available in Canon EF , Canon EF-M, Micro Four Thirds, Nikon F (FX), Pentax KAF, Samsung NX, Sony Alpha and Sony E mounts.
Fujifilm XF 27mm F2.8 R WR is a prime lens with fixed focal lenght of 27mm which has an effective (full-frame 35mm equivalent) focal range of 40.5mm when used on a APS-C / DX format camera. Samyang 20mm F1.8 is a prime lens with fixed focal lenght of 20mm.