Three-point lighting is a standard technique used in photography and film to create a balanced and visually appealing scene. It involves three main light sources: the key light, which is the primary light that illuminates the subject; the fill light, which softens shadows created by the key light; and the back light, which adds depth by highlighting the subject's outline against the background. This lighting setup helps to enhance the subject's features and create a sense of dimension. By adjusting the intensity and position of each light, filmmakers and photographers can achieve various moods and effects, making three-point lighting a versatile tool in visual storytelling.