The Mamiya Sekor 55 mm F/4.5 lens is a standard wide-angle lens, designed for the Mamiya twin-lens reflex (TLR) cameras. With a focal length of 55 mm and a maximum aperture of F/4.5, this medium format camera lens produces high-quality images. The Mamiya Sekor 55 mm F/4.5 lens is compatible with film cameras such as Mamiya 220 and Mamiya 330. This medium format camera lens has a leaf shutter system. In addition, the Mamiya Sekor 55 mm F/4.5 lens has shutter speeds ranging between 1 sec and 1/500 sec, as well as X and M flash synchronization and bulb mode. With an aperture of F/4.5, the Mamiya Sekor wide-angle lens offers a wide depth of field. This Mamiya Sekor wide-angle lens is one of the two wide angle lenses available with the Mamiya TLR cameras, and one of the seven standard lenses of various focal lengths.