The use of an aspherical element eliminates the flare typically found in lenses with large maximum apertures. Contrast and other factors important in

The use of an aspherical element eliminates the flare typically found in lenses with large maximum apertures. Contrast and other factors important in image quality are well corrected when the lens is used at full aperture. Use of the Floating System helps to maintain image quality from infinity to 0.5 meters. Considered compact with its unusual fast speed, the lens total weight is only 380 grams.