【HD Cinematic ND Filter】SmallRig 4x5.65” ND1.2 Filter 3589, measuring 143.45 x 101.55mm, is designed for professional photographers/filmmaking. Our Neutral Density Filter is used to balance the exposure, suitable for sunset/sunrise/sky photography or cinematic scene. This 4mm thick filter is ideal for SmallRig Matte Box 2660, Mini Matte Box 3196, and Fitter Frame 3319 | 【SCHOTT B270 Optical Glass from Germany】High clarity, high transmission B270 optical glass is precisely ground and polished for use with lenses of various focal lengths without compromising image sharpness. | 【6.25% light transmittance】The 4 x 5.65" filter features 6.25% light transmittance, with four stops of light blocking. The filter has high-accuracy color reproduction at moderate color temperature with little loss of detail across the image, which is ideal for video or film shooting | 【Double Layer Nano-coating】The filter is coated on both sides with multi-layer Nano, protecting against scratches, water, oil, and fingerprints. Easy to clean. A plastic storage box is for you to store the carry the filter with you without damaging it | 【Specifications】 The weight is only 147g, with 4mm thickness and 143.45 x 101.55mm size, no color cast