The Olympus M.Zuiko Digital 17mm f/1.8 Wide Angle Lens is ideal for landscape photography. It is designed for use with Micro Four Thirds mount cameras. The lens' optical design comprises 9 elements arranged in 6 groups. Two aspherical and one each DSA and high refractive index element are included in the lens assembly to maintain edge-to-edge sharpness and clarity. The Movie & Still Compatible autofocus system ensures a quick and noiseless focus operation in both photo and video modes. Moreover, the manual focus clutch provides additional control. The 7-blade diaphragm offers smooth bokeh quality. A 46mm filter can be fixed to the front lens thread.