... used to reduce the amount of light,other camera filter are available,such as UV filter,CPL ... filter etc. High quality camera ND filter Functions:1). This products is used ... scenes that can cause overexposure. 5). Other function camera filter are available,such as UV filter,CPL filter ... filter,skylight filter,soft focus filter,MC-UV filter,IR filter,FLD filter,close-up filter. features:1 ...