This plastic hood acts as a lens shade and clips directly on to the Cokin "P" filter holder. It is possible to stack multiple hoods to create a longer lens shade for telephoto lenses.
(assuming a 6 x 6 cm format medium format camera...)
- Use 1 hood for a 50mm lens
- Use 2 hoods for 70mm lenses
- Use 3 hoods for 85mm lenses
- Use 4 hoods for 105mm lenses
- Use 5 hoods for lenses 135mm and longer