Polar Pro Phantom 4 ND32 Single Filter Neutral Density ND32 Filter (3.47G) Specifically made for the DJI Phantom 4, this ND32 filter reduces the amount of light coming into the sensor. It gives you the freedom to create your own work by allowing more control of the camera’s aperture, exposure time & sensor sensitivity settings. The Polar Pro ND 2 Filter reduces the camera’s shutter speed by 5-Stops. The 5-Stop ND filter is what we use on extremely bright days. This filter is designed to take down the Phantom 4’s shutter speed by 5 stops. This is a very dark filter so it should only be used where there is enough available light to reduce. We use this shooting in the desert or over snow on very bright days. Airframe™ Construction: Polar Pro’s filter design specifically designed for aerial filming. The ultra-light construction utilizes a precision threaded aircraft aluminum frame for smooth gimbal operation.