The EW-54 Lens Hood for EF-M 18-55mm f/3.5-5.6 IS STM Lens from Canon is a black, petal-style lens hood that is designed for and compatible with the EF-M 18-55mm f/3.5-5.6 IS STM Canon lens. A lens hood is designed to shade the lens and prevent glare and unwanted light from entering the lens and affecting your image. The EW-54 is specifically designed to match the focal lengths and diameter of the EF-M 18-55mm lens. Lens hoods also offer a degree of protection for the lens against impact and scratching.