The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Rokinon 8mm f3.5 Fisheye and the Nikon 12-24mm f4G ED-IF 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. Nikon 12-24mm f4G ED-IF is the longer of the two lenses at 90mm. The Rokinon 8mm f3.5 Fisheye with a length of 77mm, is 13mm shorter. Besides being longer, the Nikon 12-24mm f4G ED-IF also has a larger diameter of 83mm 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. Rokinon 8mm f3.5 Fisheye weighs 443g, which means it is 42g (8%) lighter than the Nikon 12-24mm f4G ED-IF which has a weight of 485g.
Lens Mounts
The Rokinon 8mm f3.5 Fisheye has the Nikon F (FX) lens mount whereas the Nikon 12-24mm f4G ED-IF has the Nikon F (DX) lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (FX) Mount and Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount.
Rokinon 8mm f3.5 Fisheye is also available in the Canon EF , Four Thirds, Pentax KAF, Sony Alpha and Samsung NX mounts.
Focal Range
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.
On the other hand, the Nikon 12-24mm f4G ED-IF 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.
