Freewell True Color Variable ND Filters for DJI Mavic 3 ProFreewell True Color ND Filters for DJI Mavic 3 Pro. Designed for the DJI Mavic 3 Pro Mavic 3 Pro Cine drone, Freewell's True Color Variable ND 1 5 Stop and ND 6 9 Stop filters provide exposure reduction from 1 to 9 stops, allowing you to use wider aperture settings for shallower depth of field or motion blur. To change the effect, simply twist the filter ring. Thanks to True Color technology, these filters render colors faithfully while resisting