What is the benefit of adding light to a camera setup in terms of image quality?

Adding light to a camera setup primarily enhances visual clarity and reduces noise, which significantly improves overall image quality. When a scene is well-lit, the camera sensor can capture more detail, providing sharper images with better contrast. Adequate lighting reduces the necessity for the camera to amplify the signal to achieve brightness, which in low-light conditions can introduce graininess or noise in the image. Consequently, by providing sufficient light, the camera can operate effectively at its optimal settings, leading to clearer and more vibrant images. This improvement in clarity and reduction of noise is essential for professional quality photography and videography, especially in environments where lighting conditions are variable.