What is the relationship between light and shade in photography?

Light is light and the soul of photography is light. Light plays a role in shaping the sense of material and modeling of the subject in photography. If the subject is human, it also plays a role in shaping personality, expression and emotion. Shadow is actually an accessory of light. Without light and shadow, it mainly plays the role of a sense of direction and space.

The intensity of light is directly proportional to the brightness of the object being photographed. Strong light, bright subject; The light is weak and the main body is dark.