A ring light is a circular light with a hole in the center for a camera’s lens to fit through. It was originally invented in 1952 by a dentist in order to take close up photos of his patients’ teeth and gums – and ring lights are still used for this purpose today.
It was adopted by fashion photographers and soon became a favorite of filmmakers during the DSLR boom! The advantages of this rig are it’s light weight profile, soft light output, charged battery powered, and it attaches conveniently to a DSLR rig.
Rosco offers the DSLR version of this light in their new line up! I’ve used them and am very happy with the results!
photo and video courtesy of Rosco