The DJI ND Filter Set for Mini 4 Pro (ND16, ND64, ND256) is designed to help you capture flawless footage with your DJI Mini 4 Pro, even on the brightest of days. Each filter provides a different strength of light reduction, the higher the number the stronger the stop. The ND16 filter offers 4-stops of light reduction, ND64 offers 6-stops, and ND265 offers 8-stops.