The lens hood is specially designed for Canon EF 24-70mm f/2.8L USM lens, and replaces Canon EW-83F lens hood Unique Design: Features a non-glare matte finish on the interior surface to further limit lens flare so no vignetting will show with the hood on. And reverse attaching to the lens saves storage space. it allows you to put on a filter and a lens cap Improvement: To prevent stray light from the lens by extending and shading the end of the lens, improving your contrast and image quality Protection: Protects the lens from moisture, debris, scratch and impact Note: This lens hood only can fit Canon EF 24-70mm f/2.8L USM, but not work with Canon EF 24-70mm f/2.8L II USM lens What's in the box 1 x EW-83F lens hood