Question: How can I use "double-lighting" when photographing? Answer From: FOTOGBILL Most 'amateur' photographs are made with one "on camera flash" source, and the results are often seen as less than pleasing. You know heavy shadows on the face or on the background or totally dark backgrounds, too much contrast.... Many of the problems are solved by adding a second light source such as another strobe to work as a fill light on the subject, or a background light to raise the quantity of light behind the subject, or as a rim light or hairlight or sidelight or highlight light from the side or above or behind casting on the subject from an acute angle.