Freewell A2S-ND2000 Overview Introducing Air 2s ND, ND/PL, CPL Filters Handle extremely bright lighting and capture motion blur with this ND2000 Long Exposure Filter for DJI Air 2S from Freewell. Capable of reducing light transmission by 11 stops, this filter is ideal for long-exposure aerial still photography, letting you achieve a natural motion blur to moving objects, such as flowing water or a waterfall. Thanks to Freewell's GimbalSafe technology, the aluminum alloy construction helps ensure that it does not negatively affect the Air 2S gimbal's movement while in flight. Filter Coating Freewell has given each filter a color-neutral coating to ensure you record the best image possible. The coating also makes each filter dustproof, scratchproof, and oilproof. Use of them does not imply any affiliation with or endorsement by them.