What are the main uses of light in photographic modeling?

The six basic elements of photography light are luminosity, light level, light quality, light type, light ratio and light color.

Mastering these six factors is the basic skill of photographic lighting. 1. luminosity luminosity is the general name of the luminous intensity of light source, the illuminance of light on the surface of an object and the brightness presented on the surface of the object (the luminous intensity and irradiation distance of the light source affect the illuminance.