Description: ND filter, that is, light reduction filter, also known as neutral density filter ,ND filter is a kind of filter commonly used for shooting scenery and astronomical themes. It can perform long exposure under strong light so as to take the required photos. It uses a piece of gray pure and transparent high-grade optical glass to weaken the light passing through the lens to reduce the exposure, and its function is to filter light, which is non-selective, The ability to reduce light is equal and uniform, it only reduces the light, and does not have any effect on the color of the original object. When the picture is too bright, it may not be possible to shoot at the required slow shutter speed. In this case, the neutral gray (ND) filter can reduce the amount of light passing through and avoid overexposure. Features: This Lightdow ND fader filter is a compact all-in-one variable neutral density filter that adjusts the amount of light reduction with just the flick of your wrist. The index marks on the filter let you know exactly the amount of reduction at a glance. Giving you clear, accurate shots at whatever density you're using. It is able to freely adjust the neutral density from ND2 to ND1000. You just need to take a single filter with the same capacity with ND2, ND4, ND8 ND16 ND32. .. and ND1000. It gives you the freedom to create different neutral density freely. Note: ultra thin design,only 4.59mm thickness,can't put the lens cover on this filter Packing List: 1 x Lightdow ND2-1000 Filter 1 x Carrying Case