PH-RBJ67 Lens Hood for Pentax 75mm f2.8 lens for MF Camera
Plastic Lens Hood for SMC 75mm f/2.8 AL (for Pentax 67) Lens.
Lens 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.
The "petal" shape of this lens hood maximizes the amount of hood coverage for the minimum amount of weight and hood area. This dedicated lens hood is designed to match the specific focal length of the lens it was designed for.
This lens hood also features a handy access slot on its side wall to allow for filter rotation, very useful with polarizing filters.