The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 16mm F1.4 DC DN X and the Samyang 16mm f2.0 for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Sigma 16mm F1.4 DC DN X is the longer of the two lenses at 92mm. The Samyang 16mm f2.0 with a length of 89mm is 3mm shorter. On the other hand, the Samyang 16mm f2.0 has a larger diameter of 83mm compared to Sigma 16mm F1.4 DC DN X's 72mm 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. Sigma 16mm F1.4 DC DN X weighs 405g, which means it is 178g (30%) lighter than the Samyang 16mm f2.0 which has a weight of 583g.
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
Lens Mounts
Both Sigma 16mm F1.4 DC DN X and Samyang 16mm f2.0 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 16mm f2.0 is also available in Canon EF , Canon EF-M, Nikon F (DX), Four Thirds, Micro Four Thirds, Pentax KAF, Sony Alpha, Sony E and Samsung NX mounts.
Focal Range
Both lenses have the same focal range of 16mm but while Sigma 16mm F1.4 DC DN X has the fastest aperture of F1.4, the Samyang 16mm f2.0's widest aperture value is F2.0.