Three-Point Lighting
Three-point lighting is the foundational artificial lighting setup for film and video production, using three light sources with distinct functions. The key light is the primary, strongest light source — it defines the subject's main illumination and establishes the scene's dramatic direction. It is typically placed at approximately 45 degrees to the side of the camera-to-subject axis and slightly above eye level, creating a specific shadow pattern on the face: the Rembrandt triangle (a small triangle of light on the shadow-side cheek) is considered the most flattering for portraiture. The fill light is a softer, lower-intensity light placed on the opposite side of the camera from the key light. Its function is to reduce the density (contrast) of the shadows created by the key — not to eliminate them, but to control how deep and dramatic they are. The ratio between key and fill determines the look: a 2:1 ratio (fill at half the key's intensity) produces a soft, flat, newscast-style look; a 4:1 or 8:1 ratio produces deep, dramatic shadows for noir or thriller aesthetics. The back light (or hair/rim light) is placed behind the subject, aiming back toward the camera. It creates a subtle glow on the hair and shoulders that separates the subject from the background, preventing them from appearing flat against it. Without a back light, subjects with dark hair against dark backgrounds blend into the scene. The back light is the invisible secret of professional-looking video.