backlighting

shooting into the light is often thought of as simply a way of creating silhouettes. Attempting anything else can seem futile when almost all the subject detail is lost in deep shadow. The lack of direct light on the subject means that form and color are lost—and you have to rely on shape alone for identification. Despite this, backlighting does have other uses.

A backlit subject is not usually in darkness—it is lit
by indirect light reflected from its surroundings. If you expose for the foreground, cropping as much bright background from the shot as possible, backlighting can be particularly good for portraits—giving a soft light without distracting shadows. Backlighting is also essential for showing the translucence and color
of subjects such as stained glass and flower petals.
If the light source is just out of the frame, or behind the subject, backlighting can become rim lighting—although the majority of the subject is in shade, its outline is caught by the light, creating a halo effect.