The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 8mm F2.8 Fisheye and the Rokinon 8mm f3.5 Fisheye for their suitability to various photography scenarios:
Size and Weight Comparison
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 8mm F2.8 Fisheye weighs 265g, which means it is 178g (40%) lighter than the Rokinon 8mm f3.5 Fisheye which has a weight of 443g.
Below you can find the dimension and weight table of the Wideangle Fisheye Prime Lenses in Samsung NX Mount for size comparison purposes.
Ultra-Wideangle Lenses in Samsung NX Mount for Size Comparison
Lens Mounts
Both the Samyang 8mm F2.8 Fisheye and the Rokinon 8mm f3.5 Fisheye has the same Samsung NX lens mount. Some of the latest released cameras that are compatible with the Samsung NX lenses are Samsung NX1, Samsung NX3000 and Samsung NX30.
Samyang 8mm F2.8 Fisheye is also available in Sony E mount.
Rokinon 8mm f3.5 Fisheye is also available in Canon EF , Nikon F (FX), Four Thirds, Pentax KAF and Sony Alpha mounts.
Focal Range
Both lenses have the same focal range of
8mm but while Samyang 8mm F2.8 Fisheye has the fastest aperture of
F2.8, the Rokinon 8mm f3.5 Fisheye's widest aperture value is
F3.5.