JJC LH-T73B replaces CANON ET-73B Lens Hood
The Lens Hood For Canon L Series 70-300 IS L USM Lens from Vello is designed for use with the Canon L Series 70-300mm lens. Lens hoods are primarily designed to prevent unwanted stray light from entering the lens, by extending and shading the end of the lens. A dedicated lens hood is designed to perfectly match the specific focal length of the lens it was designed for. In addition, since the end of the lens is extended, you also get the added benefit of some extra protection from accidental impact.