Snake River Prototyping P3 Series Nd16/CP Filter for DJI Phantom 3 Each P3 Series Filter is made from 2 CNC machined Delrin pieces so that filter frame can be disassembled P3 Series ND16/CP Filter Storage case Microfiber cleaning patch The P3 Series ND16/CP Filter combines a lightweight slip-over filter frame for the DJI Phantom 3 camera with a professional grade two-in-one filter. The ND16/CP is a combination circular polarizer and neutral density 16 (ND16 = ND1.2, 4.8 - 5.5 stops depending on orientation of the CP) filter. A CP filter is used to reduce glare on the surface of water or windows, manage reflections, and increase the contrast between clouds and sky. A neutral density filter is used to reduce the effects of rolling shutter including the jello effect and prop blur. Filter weight is only 7.5!