Fujifilm GF 45mm F2.8 R WR is an Auto Focus (AF) Wideangle Prime lens with 645 max sensor coverage. When mounted on a 645 sensor camera, it will give you an FF equivalent focal range of 35.55mm. With a max aperture of f2.8, this is a fast lens.
Fujifilm GF 45mm F2.8 R WR is weather sealed which makes it an ideal lens for outdoor use, especially when coupled with a weather sealed camera body.