Lighting refers to the quality, direction, intensity, color, and character of light within a scene, one of the most fundamental elements determining the visual look, mood, and emotional tone of any image or video. Light shapes how subjects appear, how depth and dimension read within a frame, what details are revealed or obscured, and how the overall atmosphere of a scene feels to the viewer.

In cinematography, lighting encompasses many distinct qualities and techniques. Light direction - front, side, back, top, bottom - dramatically changes how subjects are modeled and how shadows fall. Light quality ranges from hard, direct light that creates sharp contrast and distinct shadows, to soft, diffused light that wraps around subjects with gentle gradations. Color temperature affects whether light reads as warm (golden hour, candlelight, tungsten) or cool (overcast sky, shade, blue hour). Lighting setups in production include techniques like three-point lighting for controlled environments, motivated lighting that mimics natural sources within the scene, and available light approaches that work with existing environmental illumination.

AI video and image generation models are highly responsive to lighting descriptions in prompts. Specifying terms like "golden hour backlight," "hard directional shadows," "soft overcast diffusion," "neon rim lighting," or "candlelit interior" communicates distinct visual qualities that models can render effectively. Lighting descriptions are among the most impactful prompt elements for shaping the mood and visual character of generated content.