Filters divide the color cellophane , the colored optical glass filters .It mainly used in the black and white photography filter according to its penetration the wavelength range and may through different divide with the absorption light. It may divide the orange, yellow, red, green, blue and so on. It Uses in the color photography filtering. Also, it can divide falling color temperature glass and Rising color temperature glass. The black and white filters that only change the whole or partial light,but do not strengthen to any kind of color and weakens. Moreover one kind is called the special effect mirror it may have the different effect picture, therefore called this kind filters the mirror for the effect mirror. Has an effect to each kind of light through, limiting and preventing and so on, School color, adjustment mood, enhancement picture artistic expressive force. Uses in photographing,photography equipment and so on.