Canon ET-83C Lens Hood for EF 100-400mm f/4.5-5.6L IS USM Lens

Designed to prevent unwanted stray light from entering the lens

Ensures no problems with vignetting or motor functions

Added benefit of extra protection from accidental impact

Compatible with EF 100 to 400mm f4.5 to f5.6L IS USM lens

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.
Brand: Canon, Model: 2707A002