Should be somewhere on the case. It is often in small lettering on the back side near the bottom. Should list it as either full screen 4 x 3 or 1.33 to 1. Or as widescreen 16 x 9 or 1.85 to 1 or 2.35 to 1 or 2.40 to one. Often referred to as Anamorphic Widescreen. I would appreciate it if you looked again. Thank you. Jim