The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 16mm f2.0 and the Rokinon 14mm f2.8 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. Rokinon 14mm f2.8 is the longer of the two lenses at 96mm. The Samyang 16mm f2.0 with a length of 89mm, is 7mm shorter. Besides being longer, the Rokinon 14mm f2.8 also has a larger diameter of 87mm compared to the Samyang 16mm f2.0's 83mm 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. Rokinon 14mm f2.8 weighs 552g, 5% (31g) lighter than the Samyang 16mm f2.0's weight of 583g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Four Thirds Mount for size comparison purposes.
Wideangle Prime Lenses in Four Thirds Mount for Size Comparison
Lens Mounts
Both the Samyang 16mm f2.0 and the Rokinon 14mm f2.8 has the same Four Thirds lens mount. Some of the latest released cameras that are compatible with the Four Thirds lenses are , and .
Samyang 16mm f2.0 is also available in Canon EF , Canon EF-M, Fujifilm X, Nikon F (DX), Micro Four Thirds, Pentax KAF, Sony Alpha, Sony E and Samsung NX mounts.
Rokinon 14mm f2.8 is also available in Canon EF , Nikon F (FX), Pentax KAF, Sony Alpha and Samsung NX mounts.
Focal Range
Samyang 16mm f2.0 is a prime lens with fixed focal lenght of 16mm which has an effective (full-frame 35mm equivalent) focal range of 24mm when used on a APS-C / DX format camera. Rokinon 14mm f2.8 is a prime lens with fixed focal lenght of 14mm.