Snake River Prototyping P3 GND (Graduated) Filter for The Phantom 3 Each P3 Series Filter is made from 2 CNC machined Delrin pieces so that filter frame can be disassembled P3 Series GND (Graduated) 16-8 Filter Storage case The P3 Series Graduated ND16-8 Filter is a graduated neutral density filter that transitions from a ND16 (ND1.2, 3.9 f-stop) filter on one edge to a ND8 (ND0.9, 3 f-stop) on the opposite edge of the filter. This filter slips over the DJI Phantom 3 camera without camera modifications (e.g. the camera's built-in UV filter stays in place). The graduated neutral density filter reduces rolling shutter artifacts (e.g. jello) by slowing the shutter speed of the Phantom 3 camera while also transitioning in darkness to give the proper exposure to both the subject and the sky. Use it for sunset/sunrise shots or filming ground activity with a bright sky at the top of the frame. Filter weight is only 7.5g! The filter glass is oriented at the factory so that the SRP logo on the edge of the filter frame cor