A circuit automatically puts the white balance of the image by controlling the level of red and blue signals. The circuit controls the levels of electrically to achieve a satisfactory white balance.

This automatic function adjusts the displayed colors of the available light so that a natural, neutral color reproduction is achieved under a wide range of different light sources (sunlight, filament lamps and fluorescent lamps, etc.)

When shooting with a digital camera, the camera can either guess what kind of light is being used (Auto White Balance), or you can tell it what kind of light you are using. (Daylight, Flash, Tungsten, Deep Shade, etc.), or you may precisely balance to the light source using Custom White Balance procedures.