Canon ET-65B Lens Hood

Lens Hood for EF70-300mm f/4.5-5.6 DO IS USM & the Canon 70-300mm f4-5.6 IS One of the most important accessories for each lens you own. A lens hood provides multiple functions: it shades the lens from stray light, improving your contrast and image quality; in inclement weather, it can assist in keeping moisture or wind-blown debris off the lens; and it protects the front barrel from the inevitable impacts against walls, door frames, and other real-life obstacles. Almost all EF and TS-E lenses have a Canon lens hood engineered specifically for it.