Features CPL FilterIt 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 shotting through glass, water and underwater scenery. MCUV FilterIt 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. ND FilterIt 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.