Rainbowimaging HEW54 Lens Hood for Canon EW-54, EF-M 18-55mm f3.5-5.6 IS STM Lens Designed for CANON EF-M 18-55mm f3.5-5.6 IS STM lens Replaces Canon Lens Hood EW-54 Prevent unwanted stray light from entering the lens. Ensures no problems with vignetting or motor functions. Added benefit of extra protection from accidental impact.