Key Light

This is the brightest light and is the main source of lighting for the shot on the subject. It is generally positioned at a 45 degree angle from the camera but it depends on what is needed for the scene.

Fill Light

This is the light that fills in the shadows created by the key light and should be positioned on the other side of the camera. It is important that the fill light is dimmer than the key light so their is still a contrast.

Backlight

This light is used to create a rim around the subject to distinguish it from the background. It is normally positioned behind the subject either higher or lower so it remains out of camera shot.

Final shot of all lighting techniques used