Fujifilm XF 50mm F2 R WR is an Auto Focus (AF) Standard 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 75mm. Providing a max aperture of f2 at 50mm, this lens is very fast.
Fujifilm XF 50mm F2 R WR is weather sealed which makes it an ideal lens for outdoor use, especially when coupled with a weather sealed camera body.