Gopro Hero5/6/7 Lens Replacement Lens Protector Applicable models: Gopro Hero5/6/7 action camera3 in 1 Snap-On Red Pink Magenta Filter SetProduct material: aluminum alloy + optical glass----------UV filter is suitable for shooting in seaside, mountain, snow and open areas, etc. It can reduce the blue tinge caused by ultraviolet rays. At the same time, for the camera, it can also eliminate the interference of ultraviolet rays on the CCD, which helps to improve the effect of sharpness and color reproduction. ----------CPL is a commonly used filter, generally used in landscape photography to remove unnecessary polarized light and make the whole picture clearer and more transparent----------ND filter Use this filter to get more freedom of aperture and shutter control, bring more exposure methods and creative space for photography creation, effectively prevent overexposure, below ND The numbers represent the ability of the filter to block light----------The red filter is suitable for tropical or blue waters of 5-25 meters, which can effectively restore the red light source absorbed by the water and correct the color deviation----------Pink filter is suitable for 1-5 meters of shallow water or blue water, it can effectively restore the red light source absorbed by water, and correct the color shift----------Purple filter is suitable for 5-25 meters of tropical or green water, which can effectively reduce the effect of green or green algae caused by green algae, and correct chromatic aberration