How to light up the monochrome background of photography and how to set the white balance of the camera.

The basic requirements of monochrome background are uniform brightness and pure color.

White balance customization can be accomplished by putting white paper at the position of the subject and lighting it with the same light as the formal shooting. In the menu custom white balance of the camera, the paper is successfully photographed and displayed as a full picture, which can be set as white balance. Note that the flash should be stable for a period of time, and the custom white balance may fade when the voltage fluctuates greatly.