The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 20mm F1.8 and the Rokinon 24mm f1.4 for their suitability to various photography scenarios:
Size and Weight Comparison
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. Samyang 20mm F1.8 weighs 497g, which means it is 83g (14%) lighter than the Rokinon 24mm f1.4 which has a weight of 580g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Samsung NX Mount for size comparison purposes.
Wideangle Prime Lenses in Samsung NX Mount for Size Comparison
Both the Samyang 20mm F1.8 and the Rokinon 24mm f1.4 has the same Samsung NX lens mount. Some of the latest released cameras that are compatible with the Samsung NX lenses are Samsung NX500, Samsung NX1 and Samsung NX3000.
Samyang 20mm F1.8 is also available in Canon EF , Canon EF-M, Fujifilm X, Micro Four Thirds, Nikon F (FX), Pentax KAF, Sony Alpha and Sony E mounts.
Rokinon 24mm f1.4 is also available in Canon EF , Nikon F (FX), Four Thirds, Pentax KAF and Sony Alpha mounts.
Samyang 20mm F1.8 is a prime lens with fixed focal lenght of 20mm. Rokinon 24mm f1.4 is a prime lens with fixed focal lenght of 24mm.