This custom filter line designed specifically for the DJI PHANTOM 3 and DJI PHANTOM 4 drones, will feature a Neutral Density 4 (2 stop), Neutral Density 8 (3 stop), Neutral Density 16 (4 stop) and Polarizing filter. The Neutral Density filter is essential tools in Aerial drone photography and cinematography. They aid in reducing the camera's shutter speed, which creates a more cinematic and natural look, while also reducing excess vibration. The polarizer is essential to adding contrast to blue skies and reducing glare and reflections off metallic surfaces and water.