Compatibility: This reversible bayonet lens hood is only designed for Canon EF 24-70mm f/2.8L USM lens (Version I). Note* this lens hood is not compatible with the EF 24-70mm f/2.8L II USM (Version II) and EF 24-70mm f/4L IS USM. | Replacement: Replaces Canon EW-83F hood. | Reversible: It can be placed backwards over the lens for easy storage. It allows you to put on a Ф77mm filter and a Ф77mm lens cap. | Professional Design: Non-glare matte finish on the interior surface to further prevent or limit lens flare. No vignetting with the hood on. | Protection: Protects your lens from accidental impact and the elements.