The Fujifilm XF 16-80mm f/4 R OIS WR lens is a compact, weather resistant 5x standard zoom lens that consists of 16 lens elements in 12 groups. This includes three aspherical lens elements, and one ED aspherical lens to effectively control field curvature and spherical aberrations giving advanced levels of sharpness across the frame. Its inner focus AF system uses a stepping motor to drive the focusing group of lens elements quietly and quickly. The powerful OIS has an effective correction of 6.0 stops.