Nikon hn 23 62mm screw in lens hood for 80 200mm f4 screws onto the front of the lens metal type available for extra strength rubber type folds back over the lens when not in uselens hoods are primarily designed to prevent unwanted stray light from entering the lens by extending and shading the end of the lens in addition since the end of the lens is extended you also get the added benefit of some extra protection from accidental impact dedicated lens hoods are designed to match the speci