Kamlan 8mm F3.0 Fisheye is a Manual Focus (MF) Wideangle Fisheye Prime lens with APS-C / DX max sensor coverage. When mounted on a APS-C / DX sensor camera, it will give you an FF equivalent focal range of 12mm. With a max aperture of f3 at 8mm, this is a moderately fast lens.
Kamlan 8mm F3.0 Fisheye is not a weather sealed lens, so you have to be extra careful against rain and dust.