The Voigtlander Nokton 50mm f/1.1 Lens is a high speed aspherical lens for M mount cameras. The lens is constructed with 7 elements in 6 groups, and has as a minimum focusing distance of 3.28’ (1m). It features an all-metal lens barrel construction, and a 10 bladed aperture diaphragm which creates pleasing out-of-focus highlights. Click stop aperture movements at half-stop intervals makes subtle adjustments in exposure or depth-of-field easy.
The lens is constructed with two aspherical surfaces and one SD (super-low dispersion) glass element.