Lens Hood for Canon EF-S 17-55mm f/2.8 IS USM as Canon EW-83J Replacement for Canon EW-83J Lens Hood Compatible with Canon EF-S 17-55mm f/2.8 IS USM Lens Using non reflective paint for interior of lens hood. Prevent unwanted stray light from entering the lens. Designed to match the specific focal length of the lens.