Waterproof,oil-proof,scratch-proof,effectively protect Mavic Mini camera.Each weights about 0.76-0.8g, no extra load on gimbal. Stable use for a long time flight. Multi-layer coating films and high transmittance.Using high quality optical glass lenses, with stable optical properties and high optical homogeneity. Integrated modeling frame,no dark corner.Non-destructive quick installation,closely fit and non-destructive image. CPL:Used to eliminate harmful non-metallic reflected light,and increase the color concentration.Makes the picture more thorough,improves image clarity and overall creates a more expressive and vivid photo. ND:It reduces the amount of light in very bright conditions so that the 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. MCUV:Can decrease blue cast and blue grey causing by ultraviolet ray,increase light transmittance. ND PL:Combines ND and CPL advantages to meet your requirements of extending exposure time and elimination of unwanted polarized light,making itself a powerful tool for landscape photography.