Description: Design: Graduated color filter are simple and practical in design and are a must have lens for outdoor photography. They are four colors: Gray, blue, red, and orangeMaterial: Circular lens filter are made of optical resin and lightweight aluminum, which are strong and wear resistant to ensure long term performance and reliabilityEasy to install: Cameras Lens filter have high reliability and performance, and you can directly replace old or damaged partsQuality: Photography equipment, is professionally manufactured, has stable performance, and long service lifeFunction: You can use the blue filter in the photography lens filter kit when the weather is not good to achieve normal color balance. The gray filter can be used for exposure balance to reduce the amount of light entering the upper part of the lens. The red gradient filter is mainly used to enhance the red tones in the picture, making the scene more vivid and vivid, and can be used to take sunset clouds, etc. The orange filter is mainly used to take sunrise and sunset, making the sunset scene more layered Specification: Material: Optical Resin, Lightweight Aluminum Package Includes: 4x Cameras Lens Filter Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.