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 DX Fisheye-10.5mm f2.8G ED 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. Rokinon 8mm f3.5 Fisheye is the longer of the two lenses at 77mm. The Nikon DX Fisheye-10.5mm f2.8G ED with a length of 63mm, is 14mm shorter. Besides being longer, the Rokinon 8mm f3.5 Fisheye also has a larger diameter of 75mm compared to the Nikon DX Fisheye-10.5mm f2.8G ED's 63mm 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. Nikon DX Fisheye-10.5mm f2.8G ED weighs 300g, 32% (143g) lighter than the Rokinon 8mm f3.5 Fisheye's weight of 443g.
Lens Mounts
The Rokinon 8mm f3.5 Fisheye has the Nikon F (FX) lens mount whereas the Nikon DX Fisheye-10.5mm f2.8G ED 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 DX Fisheye-10.5mm f2.8G ED is a prime lens with fixed focal lenght of 11mm which has an effective (full-frame 35mm equivalent) focal range of 16.5mm when used on a APS-C / DX format camera.
