When you're working on creative exposure and image control, the Neewer ND4 Camera Lens Accessory with Cpl, ND4 keeps the setup approachable. Fine-tune light, reflections or field of view right at the lens. Designed around real-world creative exposure and image control, the Neewer ND4 Camera Lens Accessory with Cpl, ND4 keeps setup and adjustments approachable. Useful listed details include Cpl and ND4. Its aluminum alloy / optical glass construction gives the setup a practical, gear-ready feel.