Which lighting component is primarily used to eliminate shadows in a scene?

The fill light is specifically designed to reduce shadows created by the key light in a scene. In traditional three-point lighting setups, the key light is the main source of illumination and often casts harsh shadows. The fill light is placed opposite the key light and is softer, allowing it to fill in the shadows without creating additional harsh contrast. This combination helps create a balanced look, giving depth while ensuring that details are visible in the shadowed areas. Consequently, the fill light plays a crucial role in achieving a smooth, professional-quality lighting effect in scenes, which is essential for video production, photography, and various visual media.