Filter for 4 x 5.65' filter holders or matte boxes. Double-sided multi-layer nano-coating with high-precision color reproduction. Made from high-purity optical glass from Germany with reduced color cast. Waterproof, oil-resistant, and scratch-resistant. Compatible with the 4 x 5.65' matte box system. Light transmission: 1.56%. The SmallRig 4 x 5.65' ND filter, designed for professional photographers, offers 7 different light transmissions ranging from 0.78% to 50%, corresponding to a light reduction of 7 stops. The filters are made from optical glass and are precisely ground and polished for use with a 4 x 5.65' filter holder or matte box. The filters are crafted from highly transparent, high-transmission B270 glass from Germany and are coated on both sides with a multi-layer nano-coating that ensures high-precision color reproduction. These coatings are mold-resistant, waterproof, oil-resistant, and scratch-resistant, making the filter easy to clean and store, and ideal for video and film shoots. The filter allows for a larger aperture for additional background blur and control over image sharpness, enhancing flexibility and image quality.