Using a projector, wireless strobes, and a Canon 5D camera tethered to a mac book pro, the Exposure Tunnel Experiment shows a time lapse of every previous exposure projected in the background.

The projected area was about 12' wide by 7' tall, guests to the gallery would walk in front of the projections and see a tunnel of all of the previous exposures.

What I didn't realize would happen is the interaction between exposures and that people would use the sequence of exposures to make it look like they were moving. Also it was really interesting to people to scroll back and forth in time to see who had been in the photos previously, that seemed to give people a lot of confidence to jump into the strange projection and become the next exposure in the tunnel.

If I were to do this again, I would use spotlights with a narrower beam and black out all of the ambient light with black curtains so that there was no light spill. I believe it would look a lot richer as it did in real life and it would be fun to have the guests trigger the flashes.