1、Multilayer nanometer coating technology, the lens filter has waterproof, oilproof, anti fouling, and anti scratch performance to protect the lens from dust and scratches. 2、The gradient gray filter is mainly used for exposure balance. When the sunlight is strong and the contrast with the ground is large, the lens can reduce the amount of light incident on the lens to avoid the appearance of white sky or dark ground. 3、Gradient purple filter is a blend of blue and red, and is often used in landscape photography to bring out a dreamy purple effect. And the gradient orange filter is mainly used to shoot sunrise and sunset, which can make the originally monotonous sunrise and sunset scene more layered and dynamic. 4、Gradient red filter is suitable for enhancing the red tones in the picture, making the scene more vivid and layered. It is used to shoot scenes such as maple leaves, sunset, evening glow or desert dunes in the evening. 5、Gradient yellow filter is suitable for wheat waves, grassland, rape blossoms, etc., highlighting the gorgeous colors, and is one of the most important filters for photographic art creation. 6、The gradient blue filter is suitable for bad weather, heavy clouds or haze. It can restore the sky to a clear blue without affecting the ground tone and achieve a good color balance. And the gradient green filter is suitable for grassland, woods, green leaves, etc., to set off the background color and highlight the corresponding subject. Item Type: Lens Filter Material: Aluminum Alloy + Optical Glass Interface: Approx. 37mm / 1.5in Product Weight: Approx. 27g / 1.0oz Applicable Models: For Canon, for Nikon, for Sony, for Olympus, for Fujifilm Camera Lens with 37mm / 1.5in Interface 1 x Lens Filter 1 x Storage Box