The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samsung D-Xenon 12-24mm F4 ED and the Rokinon 8mm f3.5 Fisheye for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Samsung D-Xenon 12-24mm F4 ED is the longer of the two lenses at 88mm. The Rokinon 8mm f3.5 Fisheye with a length of 77mm, is 11mm shorter. Besides being longer, the Samsung D-Xenon 12-24mm F4 ED also has a larger diameter of 84mm compared to the Rokinon 8mm f3.5 Fisheye's 75mm diameter.
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. Samsung D-Xenon 12-24mm F4 ED weighs 430g, which means it is 13g (2%) lighter than the Rokinon 8mm f3.5 Fisheye which has a weight of 443g.
Lens Mounts
The Samsung D-Xenon 12-24mm F4 ED has the Pentax KAF2 lens mount whereas the Rokinon 8mm f3.5 Fisheye has the Pentax KAF lens mount. Some of the latest released cameras that are compatible with these mounts are , and for the Pentax KAF2 Mount and Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount.
Rokinon 8mm f3.5 Fisheye is also available in Canon EF , Nikon F (FX), Four Thirds, Sony Alpha and Samsung NX mounts.
Focal Range
Samsung D-Xenon 12-24mm F4 ED has a focal range of 12-24mm and
2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
18-36mm when used on a APS-C / DX format camera.
On the other hand, the Rokinon 8mm f3.5 Fisheye is a prime lens with fixed focal lenght of 8mm which has an effective (full-frame 35mm equivalent) focal range of 12mm when used on a APS-C / DX format camera.
