Lighting, the unsung hero of production, affects every part of the production process. Proper lighting not only enhances the performances and visuals of a production, it also serves to keep the set organized and the actors safe. Lighting design coordinators are responsible for designing the lights used in a production. They are usually responsible for selecting each light, determining how it should be used, and deciding which gels to use. In addition, they often work closely with the cinematographer and production designer to ensure a cohesive visual look. As the production goes on, the lighting designer often works with the grip and electrical departments to adjust the placement of the lights. The lighting used in a production can drastically affect the tone and mood of the production. For example, if a production has a dark, mysterious tone, the lights used for that production will be placed in such a way as to create deep shadows and contrast. On the other hand, if the production has a more positive, uplifting tone, the lights may be used in a way that emphasizes a bright, cheery atmosphere. In addition to the aesthetics, lighting is also used to keep the production safe. On a film set, the dimmer board operator is responsible for ensuring that all lights are at appropriate levels to keep the actors and crew safe. On a theater set, the lighting designer must take into account the brightness and locations of the lights to make sure that actors can see properly and avoid potential injury. At the end of the day, lighting is an essential part of any production. By using the right equipment and design techniques, lighting designers can truly elevate the audiences experience.