Which lighting technique involves the use of three different lighting sources?

The technique involving three different lighting sources is known as three-point lighting. This lighting method is essential in both photography and videography, as it helps to create a balanced and visually appealing scene.

Three-point lighting consists of key light, fill light, and back light. The key light is the primary source of illumination, directing light onto the subject to create contrast and dimension. The fill light is used to soften shadows caused by the key light, helping to achieve a more even exposure. Lastly, the back light is positioned behind the subject, providing separation from the background and adding depth to the image. This combination of lights allows for the creation of professional-quality visuals with depth, dimension, and clarity.

In contrast, the other lighting techniques listed do not utilize three distinct light sources. Two-point lighting involves only two sources, typically a key and fill light, while ambient lighting provides a general illumination without focusing on specific subjects. Directional lighting focuses light in a specific direction but does not incorporate a balanced setup like three-point lighting does.