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, fill light, and back light. The key light is the primary source, illuminating the subject, while the fill light softens shadows created by the key light. The back light adds depth by highlighting the subject's outline, separating it from the background. This lighting setup helps to enhance the three-dimensionality of the subject and can be adjusted to achieve different moods. By manipulating the intensity and position of each light, filmmakers and photographers can create dramatic effects or maintain a natural look, making it a versatile tool in visual storytelling.