Specific lighting is used for a wide range of purposes, such as: * Illumination of the stage, so the audience and cameras can see the relevant action * Drawing focus into part of the stage, or individual characters, props or scenery * Setting mood, ranging from dark/evil to light/happy etc * Setting a scene, such as the time of day or location * A plot event, such as an explosion, revelation or just a scene change * Creating a 3D perspective of the set * Backstage illumination (Working Light)