In the film, the facial light of the character is half black and half bright. Is there any technical term for this shooting method?

This shooting technique is called "Yin-Yang Face" or "Side Light" in the field of film and photography.

"Yin and Yang face" is usually used to describe a movie or photography, and the light on the face of the characters is half dark and half bright. This technique is often used to highlight the character, emotion or situation of a character. It can achieve this effect by controlling the light and shooting angle.

"Side light" is another term to describe this technology. Under the side light, the contrast between light and shade is obvious, and the three-dimensional sense is strong, which can highlight the shape and outline of the main body. In photography, sidelight is a commonly used shaping light, especially in portrait photography, which can well express the outline and emotion of characters. In some special cases, such as shooting people or scenes with specific temperament, photographers may choose to use this technique.