The EW-73C Lens Hood from Canon is designed especially for use with the EF-S 10 to 18mm f/4.5-5.6 IS STM lens manufactured by Canon. This hood is especially useful when you are shooting in bright outdoor locations, as it minimizes flare and ghosting by preventing any stray or unwanted light from entering the lens. This lens hood also offers protection to the front element of the lens element from accidental impacts, abrasions, or bumps. Being small and lightweight, it fits in your camera bag quite easily.