Fotasy Bayonet Lens Hood for Canon EF 35mm f/2 IS USM Lens, replaces CANON EW-72 Designed for Canon EF 35mm F/2 IS USM Lens 100% replaces CANON Lens Hood EW-72 Prevent unwanted stray light from entering the lens. Ensures no problems with vignette or motor functions. Added benefit of extra protection from accidental impact. Lens not zoomable