The Noctilux-M 50mm f/0.95 ASPH from Leica is the worlds fastest 50mm lens, earning it the title of "King of the Night". Designed to offer exceptional control over depth of field with extremely diffuse, soft backgrounds, the lens uses a total of eight elements in five groups with five partial dispersion lenses for controlling colour defects. Add to this three highly refractive lenses for controlling distortion and spherical aberrations while keeping the design compact. Additionally, two of the surfaces are aspherical and a rear floating element is able to dramatically improve the close-up performance of the lens throughout the f/0.95 to f/16 aperture range. It has 11% greater light-gathering capacity than its predecessor, the Noctilux-M 50mm f/1, and the lens features Leicas 6-bit coding for sending metadata to digital M cameras, allowing for proper frame lines to be shown as well as proper digital correction of lens aberrations to be done in-camera. The lens also has a minimum focus distance of 3.3 and an extendable lens hood to limit flare.
