The Summarit 50mm lens was a standard camera lens manufactured by Leitz Wetzlar in 1956 for the Leica rangefinder cameras. The Summarit 50mm had a maximum aperture of f/1.5 and a minimum aperture of f/16.0. It was made of 7 elements arranged in 5 groups. Color correction and contrast were excellent, so considerable sharpness was obstained over the entire image area even at full aperture. The general sharpness is further increased with moderate closing of the aperture, and about f/4.0 it reached an unusually high degree of contrast and resolution. The uniform distribution of light over the entire image area and the elimination of distortion were excellent for a lens of such a large initial aperture.