For Go Pro Hero 5 6 7 Lens Accessories UV CPL ND 4 8 16 Neutral Density Filters Set For GoPro Hero5/6/7 Black Action Camera ND Filter Higher the ND Value, the more obvious the light-reducing effect. It reduces the amount of light in very bright conditions so that camera can choose the correct exposure value and avoid excessive exposure. It also improves the color saturation of the picture, Makes the picture more transparent and alive. you can also use a slow shutter speed to shoot some special effects, such as a mist of water, a light track at night, etc. When you shoot video in direct sun exposure, you can reduce the shutter speed by ND Filters, so that the video has the appropriate motion blur and looks balanced. Compatible Model : Compatible For GoPro Hero 5/Hero 5 Black Action Camera Compatible For GoPro Hero 6/Hero 6 Black Action Camera Compatible For GoPro Hero 7 Black Action Camera Compatible For GoPro Hero 2018 Action Camera Package List : 1x Action Camera Lens Filter 1x Storage Box CPL Filter It is mainly used to eliminate harmful non-metallic reflected light and increase the color concentration. It Also enhances blue sky, highlights white clouds, Makes the picture more thorough, improves image clarity and overall creates a more expressive and vivid photo. It is also often used in shooting through glass, water and underwater scenery. UV Filter : It Can Decrease blue cast and blue-grey causing by ultraviolet ray, increase light transmittance. Using the UV Filter in high mountains or altitude increases the distance field of the shot and makes a clear shot. It also provides protection for the camera. Red Filter : Suitable For Snorkeling 5-21 meters Blue or green waters, can effectively restore the water absorbed by the red light source, Correct the color deviation. Magenta Filter: Suitable For Snorkeling 5-21 Meters Fresh or Salt Water, Can effectively reduce the effect of green tone or green tone caused by green algae, correct the color deviation.