What is the function of light in photography?

In photography, light can express the shape and color of the subject, the spatial position of the subject, create a specific atmosphere and express the texture of the subject. Light is a straight line representing the propagation path and direction of light. Light is a geometric abstraction, and the real world can't get a light. In spoken language, light can also refer to the light emitted by a light source. Light can be divided into incident light, reflected light and refracted light.

Photography:

Photography refers to the process of recording images with some special equipment. Generally, we take photos with mechanical cameras or digital cameras. Sometimes photography is also called photography, that is, the process of exposing a photosensitive medium by using the light emitted or reflected by an object. Someone once said an incisive language: the photographer's ability is to transform the fleeting ordinary things in daily life into immortal visual images.