All of the filters lessen light coming into the sensor, which slows down the shutter speed of the camera.Circular-Polarizing filter: Reduces light reflections, glare and increases color contrast and saturation.ND4 and ND8 filter diminish the amount of light that goes into the sensor, which lead to wider apertures and longer exposure time; avoid overexposed photos caused by bright sunlight to have better color contrast and richer color. ND8 filter films in brighter sunlight situation than ND4 filter does.NOTE: Please take off the original lens before put on our filters. For: DJI Phantom 4,Phantom 3 Standard Professional Advanced. (NOT fit DJI Phantom 4 Pro.) Package: 4 x Filter Sets( Circular-Polarizing, ND4 Filter, ND8 Filter, UV filter)+ 1 x admission package.