1、Aluminum Frame: Made of high quality aerospace aluminum alloy, the filters have high toughness, resistance to deformation, corrosion resistance, and good processing performance. 2、18 Layers Double Sided Coating: 16 layers of antireflection film, 2 layers of waterproof film effectively reduce the reflection of the filter surface and the glare and ghost caused by light reflection during long exposure. 3、Great Waterproof Performance: The two layer waterproof film makes the lens surface smooth and not easy to be stained, and effectively protects the lens. It is suitable for photographers to create in harsh environments. 4、UV Lens Filter: UV lens filter can weaken the blue tint caused by ultraviolet rays and improve the clarity and color reproduction effect. 5、FLD Lens Filter: FLD lens filter is often used in landscape shots to bring out a dreamy purple effect. 6、CPL Lens Filter: CPL lens filter is a commonly used filter that eliminates unnecessary reflections and can eliminate most of the reflections on non metal non spherical surfaces. It is generally used for landscape photography. The sky is bluer when shooting. When shooting water, it can eliminate water reflections and shoot the scenery under the water, so that the whole picture is clearer and more transparent.