Canon Lens Development     EF Lens Lineup

Canon initiated the EF lens line in March 1987 as part of the innovative EOS system with the underlying development concept of fusing automatic and manual operation. Heralding a new era in SLR photography, the EF lenses with built-in focusing motors were the first to communicate completely electronically with the camera body. Followed by the high optical performance L-series, incorporating the silent Ultrasonic Motor (USM) and at a later stage the world's first interchangeable SLR lens with an image stabilizer, the EF lens series today is the largest line-up in the autofocus SLR world. The EF Lens Series comprises the following:- (A) Ultra wide zoom lenses (B) Standard zoom lenses (C) Telephoto zoom lenses (D) Wide-angle lenses (E) Standard and medium telephoto lenses (F) Telephoto lenses (G) Super telephoto lenses (H) Macro lenses (I) Tilt+shift lenses