Ultra bright Dietary lens Ttartisan 50mm F0.95 The optical lens system consists of 10 elements in 8 groups, including one aspherical lens, two ED lenses and 5 elements with an increased refraction. The lens has a 14-year-old aperture, which provides beautiful imaging of blurry even with a stronger closing of the aperture (maximum to f/16) the minimum sharpening distance is 70cm (it is possible to reduce this value by using the Close-Focus adapter). The lens is beautifully made, its dimensions are 74 mm x 72 mm, weighs 673 g. Technical data: Focus: 50 mm firm: f/0.95 maximum aperture: f/0.95 minimum aperture: f/16 lens mounting: Leica M Minimum focusing distance: 2.3 / 70 cm Construction: 11 elements in 8 groups Membrane blades: 14 Focusing type: manual focusing filter size: 67 mm dimensions: 72 x 89 mm