The Leica DG Vario-Elmarit 8-18mm f/2.8-4.0 ASPH is a new ultra-wide-angle zoom lens for the Micro Four Thirds system. Featuring silent, high-speed focusing thanks to an inner focus drive system, the Panasonic 8-18mm lens offers a versatile focal range of 16-36mm in 35mm terms. It uses 15 elements in 10 groups, including 1 aspherical ED lens, 3 aspherical lenses, 2 ED lenses and 1 UHR lens, and 7 diaphragm blades give the aperture a rounded shape.