【ND Filter Function】 NEEWER ND filter (neutral density filter) is to avoid overexposure in outdoor photography. Darkens the entire image, allowing you to shoot with a wider aperture or slower shutter speed than would usually be required. It is used to record the movement of objects such as waterfalls, showing a smooth effect like flowing water, and is recommended for landscape photography. | 【No Vignetting】 3.3mm ultra thin frame design to avoid vignetting in wide angle lenses. Each ND filter frame is made of aviation aluminum, which is ultra thin and lightweight. The CNC non slip design helps you easily screw on and remove the filter. The extra sturdy frame ensures durability and prevents jamming. | 【30 layer Double sided Coating】 Adopt imported high quality HD optical glass, with accurate light transmittance and excellent image sharpness. Each ND filter adopts 30 layers of double sided nano coatings, which is anti reflection and anti glare in photography. The double sided polishing technology can balance the light well without compromising HD image quality. | 【Waterproof and Scratch Resistant】 No chromatic aberration (color cast), hydrophobicity, scratch resistance, oil resistance, protect your precious camera lens. If water is accidentally splashed on the filter, the droplets will stay solidified and not spread; they are easy to clean and carry. | 【Package Included】 NEEWER ND filter kit includes ND1000+ND64+ND8+ND4 filters (each), a clean cloth and a water resistant filter bag.