Catch light is a photography term used to describe either the specular highlight in a subject's eye from a light source, or the light source itself. A catch light may be an artifact of the lighting method, or have been purposely engineered to add a glint or "spark" to a subject's eye during photography. This technique is useful in both still and motion picture photography. Adding a catch light can help draw attention to the subject's eyes, which may otherwise get lost among other elements in the scene. Lighting is often arranged in studio portraits specifically to create attractive catch lights. Reflectors are normally used under low lighting situation to help to bring in `light' and reducing shadows on the face. I requested Prince 1 to look up transparent ceiling which had great source of light. It wasn't too harsh that would cause his tiny eyes to squint, the idea is able to get a bit of a reflection to his eye balls, giving it more life (tiny bit of catch light). In portraiture it's known to be an important as eyes without catch lights are often said to appear dull or lifeless. I didn't use a reflector to balance out the light. Isn't it great to have willing sample guinea pigs who will pose for you to experiment?