What type of light is used to reduce shadows in a shot?

Fill light is used to reduce shadows in a shot by providing additional illumination to areas that the key light does not adequately reach. The purpose of fill light is to soften the contrast created by the primary light source, known as the key light. By lighting the shadows, fill light creates a more balanced exposure across the scene, allowing for details to be visible without harsh shadowing.

In a typical three-point lighting setup, the key light serves as the main light source, creating depth and dimension, while the fill light complements it by addressing shadows. The balance achieved through fill light contributes significantly to the overall mood and clarity of the shot, making it an essential component in lighting design.