In television, film, stage, or photographic lighting, a fill light (often simply fill) may be used to reduce the contrast of a scene and provide some illumination for the areas of the image that are in shadow. A common lighting setup places the fill light on the lens axis, roughly perpendicular to the key light. The fill light is often softer and, by definition, less intense than the key light. The ratio between light and shadow depends on the desired effect.