What sets the SmallRig Cine 4x5.65" 2.1 7-Stop Multi-Coating Neutral Density Filter apart is its superior design and functionality, tailored for professional photographers and videographers. This high-quality filter offers a range of light transmittance from a minimal 0.78% to a substantial 50%, corresponding to a 7-stop light reduction. This versatility allows for precise control over the amount of light entering your camera lens, enhancing exposure and depth of field in various lighting conditions.Constructed with premium B270 optical glass from Germany, this filter is meticulously ground and polished to fit a 4x5.65" filter tray or matte box. Its high-clarity, high-transmission properties ensure accurate color reproduction, crucial for professional photography and videography.The SmallRig Nd Filter is not just about performance but also durability. It features a multi-layer nano-coating on both sides, providing resistance against mildew, water, oil, and scratches.