How is hard light identified in terms of shadow quality?

The identification of hard light in terms of shadow quality is best understood by recognizing that shadows generated by hard light sources feature crisp and defined edges. Shadows created by hard light are stark and clearly delineated, which can directly affect the overall perception of the light in an image or scene.

The correct answer addresses the variability of shadows depending on the lighting instrument used. Different instruments can produce varying shadow qualities; for example, a compact light source can generate hard shadows, while larger or diffused sources tend to create softer shadows. Therefore, shadows can indeed differ based on how the light is directed or diffused.

Other answer choices do not accurately represent the characteristics of hard light. For instance, hard light does create shadows, which eliminates the possibility of having no shadows at all. Furthermore, shadows with soft edges typically signify diffused or soft lighting, not hard lighting. Lastly, while hard light can be positioned overhead, it is not a defining characteristic, as hard light can come from various angles depending on the light source.