Purpose of performance lighting The primary purpose of performance lighting is to let the audience clearly see the scenery on the stage, and the way of performance lighting will make the audience visually perceive the scenery on the stage and then have a great impact on the impression of the whole performance. When this basic goal is clearly visible, the purpose of lighting designers is to enhance the dramatic effect of the whole performance. The four basic functions of stage lighting are: visibility, lighting motivation, lighting fusion and creating atmosphere. Visibility provides visibility, which goes without saying. In particular, this function also means not exposing things that are not suitable for viewing on the stage to the audience. Motivation: It is one of the tasks of the lighting designer to make the lighting effect look natural, and the lighting effect should be properly matched with the stage scenery. For example, in order to simulate the effect of real night, the lights on the stage should look like tree lights in the set, or table lamps or other light sources in the set. Even if the scenery is not real at all, keep this momentum. In such a performance, the lighting must conform to the content of the performance and meet the needs of the plot. Lighting fusion: the role of lighting is also a part of stage scenery design. Lighting fusion is an attempt by the lighting designer to improve the feasibility of the scheme provided by the scene designer, and it is also provided by the director in the stage scheduling. In other words, it is to provide the actors on the stage with appropriate proportion of lighting, accurate projection position and lighting time when the plot needs it. Creating atmosphere: Although it can be regarded as an independent function, it is also a part of the other three functions. The combination, motivation, quantity and visibility of lights will affect the overall atmosphere of the performance. To embody the four functions of stage lighting, designers should make efforts from four basic controllable aspects of lighting: brightness, matching lighting, color and beam movement. Brightness: refers to the brightness of lamps. Distribution of lamps and lanterns: This includes not only the distribution of lights covering the stage, but also the projection direction of light beams reaching the stage. Beam color: By putting colored paper in the beam, the color can be easily changed, but the effective use of color is one of the most challenging aspects of stage lighting. Movement of beam: This movement includes not only the movement of beam, but also the transformation of other three functions. There are several ways of stage lighting, but they are all based on traditional lighting rules. First of all, there must be enough lamps to show the colors, patterns and other details needed for the performance. When necessary, the lamps must be able to display the characters or props performed on the stage. The main characters must be clearly identifiable and slightly brighter than the background. When dealing with stage lighting, lighting designers usually treat the lighting projected on the actors differently from the lighting in the background. Actors are naturally the focus of attention. Even in tragic or very dramatic scenes, the audience should clearly distinguish the protagonist, and his every move should be clearly visible. In order to ensure the lighting effect of actors, most lighting designs are divided into several groups of performance areas, so that the lighting effect is more obvious. The lighting distribution in the performance area is to achieve the expected clear effect, fully display the actors' performances, and ensure that the audience can clearly distinguish the background from the actors.