Thanks for all your comments!!! I took this shot of my friends just as someone was trying out an old wall projector. Although there was a lamp to the left of the frame, you might also notice light from the projector as it bounced off the wall.

Camera: NIKON D50 | Lens: 38 mm | Aperture: f/5.6 | Shutter: 1/5 sec | ISO: 200