The Summilux-M 28mm f/1.4 ASPH Lens from Leica is a fast prime wide-angle lens designed for their M mount rangefinder cameras. With its wide aperture it performs well in low-light and provides selective focus control. One aspherical element and one floating element, as well as elements made from anomalous partial dispersion glass produce sharp images with true colour and minimal distortion and aberrations. The manual focus design of the lens is aided by a focusing tab for precise control.