Want to prevent unwanted stray light from entering the lens, and protect the lens from scratches and impacts at the same time? This Canon Lens Hood will meet your need! It is the real professional lens hood you need really. This Canon Lens Hood is designed to prevent glare by stopping light from coming into the lens at side angles, and the main function of the Camera Lens Hood is to shade the lens from stray light, improving your contrast and image quality, which can protect lens from scratches and impacts. Added benefit of extra protection from accidental impact. Durable Lens Hood can assist in keeping moisture or wind-blown debris off the lens. Really a must have for you. Take it home now! You will get more than you paid!