Original Canon ET-83E Lens Hood for EF 85mm f/1.4L USM Lens - Compatible with Canon 85mm Portrait & Low-Light Photography, Wedding & Event Shooting

The Canon ET-83E Lens Hood, as with other lens hoods, is made to keep undesired side lighting from entering the lens.  It does this by extending and shading the end of the lens. Furthermore, since hood extends from the lens, it gives extra protection from accidental impact.  It is removable and attachable in reverse to take up as little space as possible when storing in camera bag.