Feature:1. CPL is a commonly used filter, which is generally used for landscape photography to eliminate unnecessary polarized light, making the entire picture clearer & more transparent.2. The UV mirror is also called the UV filter, the Ultraviolet. It is usually colorless & transparent, but some of them appear violet or violet in some angles due to the addition of an anti-reflection film. Many people buy UV mirrors to protect the delicate lens coating, which is just an accessory function. UV mirrors can reduce the blue tint caused by ultraviolet light. At the same time, for digital cameras, it can also eliminate the interference of ultraviolet light on CCD, which helps to improve the clarity & color effect. Tips:UV mirror may appear black circle phenomenon, this phenomenon is a normal phenomenon, not a quality problem, please be careful! Package Included: (Not included the camera, just the lens filter)1 X CPL Lens 1 X UV Lens 1 X Adapter Ring 1 X Lens Cover