The Neewer ND4 Camera Lens Accessory with Cpl, ND4 makes creative exposure and image control easier to work into your everyday setup. Small lens accessories can make a noticeable difference in the frame. With the Neewer ND4 Camera Lens Accessory with Cpl, ND4, you get a straightforward option for creative exposure and image control without adding unnecessary complexity. Useful listed details include Cpl and ND4. Its aluminum alloy / optical glass construction gives the setup a practical, gear-ready feel.