[White Balance ] The color temp of the framing object has reached the color balance, which can be for camera white balance to facilitate the camera to catch the true color. [Lens ] Made of materials, , , can also be as a normal lens cover to the lens from abrasion and . [Easy To Use] Professional camera lens cover, easy to install, snap on design, easy to open and close, easy to use, small size, light weight, easy to carry, with service life. [Color Reproduction] Overcome the defect that CCD cannot accurately reproduce color under complex lighting conditions, and is suitable ' needs for high end photography. [Professional Design] Derived from the working principle of CCD and CMOS, this white balance lens cover is specially designed for digital camera white balance needs.