1[White Balance Correction] The color temp of the framing object has reached the color balance, which can be used for camera white balance correction to facilitate the camera to catch the true color. 2[Lens Protection] Made of high quality materials, anti corrosion, anti oxidation, can also be used as a normal lens cover to protect the lens from abrasion and dust. 3[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 long service life. 4[Color Reproduction] Overcome the defect that CCD cannot accurately reproduce color under complex lighting conditions, and is suitable for professionals' needs for high end photography. 5[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. 1 xSnap on Lens Cover Item Type: Snap on Lens CoverMaterial: PlasticCaliber: Approx. 77mm/ 3.0in