This Leica Summicron-R F/2 Wide Angle Fixed/Prime lens has 35 mm focal length. Due to its all metal construction, the lens looks strongly built. The minimum focusing distance is 30cm (12in) and the minimum supported aperture is f/16. The lens accepts 55mm screw-in type filters. The Leica Summicron-R F/2 lens features Manual Focus and is designed to be used with SLR bodies.