Olympus ED 75mm f1.8 is an Auto Focus (AF) Telephoto Prime lens with FourThirds max sensor coverage. When mounted on a FourThirds sensor camera, it will give you an FF equivalent focal range of 150mm. Providing a max aperture of f1.8 at 75mm, this lens is very fast.
Olympus ED 75mm f1.8 is not a weather sealed lens, so you have to be extra careful against rain and dust.