The phot r hb 45 ii compatible nikon lens hood helps to prevent unwanted stray light from entering the lens by shading the front of the lens dedicated lens hoods are designed to match the specific focal length of the lens it was designed for it also adds extra protection against accidental impact dedicated lens hoods are designed to match the specific focal length of the lens it was designed for this lens hood is compatible with the nikon 18 55mm f35 56 lensesit helps to improve the vers