The phot r 67mm metal screw in lens hood is a high quality metal standard lens hood it provides protection from unwanted light flares and from accidental physical damage this lens hood helps to lower the contrast of the image and enables you to shoot towards the light source without excessive flare it also stops light coming into the lens at extreme angles and being reflected inside the lens it is made of metal which permits a long life of the lens hood with a screw mount which can be attac