Voigtlander Nokton series Aspherical Standard lens with an aperture of f/1.5 is compatible with Leica/Voigtlander SLR cameras. This Voigtlander lens is capable of being used with Manual focus. It contains 6 elements in 5 groups and features a focal length of 50 mm. The lens is compatible with 52 mm filters. It has 5.84 cm diameter, 5.59 cm length and weighs 240 g.