CANON FD 28 MM 1:2.8 WIDE ANGLE CAMERA LENS Angle of view: 75 degrees / Minimum Aperature: 22 Closest Focusing Length: 1 ft / Filter Size: 52 mm Focusing Mechanism: Double-helicoid focusing / Diaphragm: Automatic Length with caps: 2 3/4 in / Weight: 6 7/8 ozs