Hobby-Ace Adjustable ND2-400 Filter For DJI phantom 3 Camera The Adjustable ND filter can be adjusted between 2-400 ,the index marks on the filter let you know exactly the amount of reduction at a glance. Giving you clear and precise shots at whichever density you are using The ND2-400 filter is specifically made for the DJI Phantom 3 ProfessionalAdvanced. It helps you to reduce the amount of light coming into the sensor. It gives you the freedom to create your own work by allowing you to have more control of the cameras aperture, exposure time and sensor sensitivity settings. More phantom filter product is provided by us in Amazon.Bring your eyes into the sky and racing like a free bird, enjoy the ultimate first person view experience.