The Leica Summilux-M 35mm F/1.4 ASPH is a fast full frame manual focus prime lens in Leica M mount with a maximum aperture of f/1.4 and a minimum focus distance of 70 cm. To limit spherical aberrations and distortion, the Summilux-M 35mm has a single aspherical element. A system with floating elements maintains performance over the entire focus range. The Leica Summilux-M 35mm F/1.4 lens weighs 320 grams, is 56 x 46 mm and uses 46mm filter thread.