Key light意思

"Key light" is a term used in photography and cinematography to refer to the primary light source in a scene or setup. It is the main light that illuminates the subject and establishes the basic lighting pattern. The key light is typically the brightest light source in the setup and is used to highlight the subject and create contrast.

The key light is essential in creating a well-lit scene and can be used to achieve a variety of effects, from a soft, diffused look to a hard, dramatic look, depending on the type of light and the distance and angle at which it is positioned relative to the subject.

In addition to the key light, there may be other light sources in a setup, such as fill lights, backlights, and rim lights, which are used to fill in shadows, separate the subject from the background, and add depth and dimension to the scene. However, the key light is the foundation upon which the rest of the lighting is built, and it is crucial in setting the mood and atmosphere of the image or video.