What is meant by 'light quality' in cinematography?

Light quality in cinematography refers to the texture and character of light, distinguishing it as hard or soft. Hard light creates sharp shadows and highlights, providing a stark contrast that can enhance the dramatic effect or definition of details within the scene. In contrast, soft light diffuses shadows and produces a more gradual transition, often leading to a more even and flattering illumination of subjects.

This concept is essential for filmmakers as it affects not only the aesthetic of the image but also the emotional tone conveyed to the audience. For instance, hard light might be used in scenes that intend to evoke tension or uncertainty, while soft light may be preferred in romantic or serene contexts.

The other options relate to different aspects of lighting in cinematography but do not capture the essence of 'light quality' specifically. Overall brightness pertains to exposure levels rather than the nature of the light itself. The duration of light exposure deals with how long a shot is lit, which affects the overall image but not the character of the light. Lastly, light temperature refers to the color of the light rather than its quality.