What does equivalent light mean?

Increase the brightness output of the camera or lighting equipment to improve the brightness of the picture during photography or video recording. Equivalent lighting is a technical term in the shooting process, which mainly improves the overall brightness of the film by improving the ambient light entrance, which means that in photography or video recording, the brightness output of the camera or lighting equipment is increased in order to improve the brightness of the picture. The amount of light is interpreted as the product of luminous flux multiplied by time.