For DJI Osmo Action 4 JUNESTAR Threaded Camera Lens Filter 1. Multi-layer coating filter, high transmittance and high light to restore the true color 2. Using professional optical glass lens, the image is clearer 3. Protect your expensive lens from dust and scratches without degrading photo quality. 4. Material: Aluminum alloy + optical glass Features of different filters: 1. UV filter: Suitable for shooting in the seaside, mountains, snowfields and open areas, etc. It can reduce the blue tone 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. 2. CPL Filters: Increases color saturation, creating deep, rich scenic images. Helps to reduce the amount of light entering the lens. 3. ND Filter: You can get more freedom to control aperture and shutter, bring more exposure methods and creative space for photography creation, and effectively prevent overexposure. The number behind ND represents the ability of the ND mirror to block light. 4. Streak Drawing Filter: The point light source of the picture can be shot to produce a blue multi-color drawing effect, such as the light source drawing effect of a wide-screen movie lens. Let more users shoot movie-like video effects without changing their own equipment, bringing convenience and creativity to your creations. 5. Star Filter: It is a kind of radiant effect that takes the luminous point as the center and produces a radiant effect after the light is diffracted. 6. NIGHT Anti-light Pollution Filter: It can effectively reduce light pollution and make the picture show real color. 7. Macro: Macro 10x lens to increase the magnification of the object, more suitable for shooting plants and flowers or small insects. 8. Purple filter: Purple filter: The purple filter is color-corrected when shooting in green sea water with a depth of 5 to 25 meters. It is ideal for in freshwater lakes, fresh reservoirs