The other day I had an idea I want to try. I asked Marlo to stand in front of the camera and look at the lens, then look right, then left. While she was turning, I ran around in the dark like a maniac blindly operating the flash and switching gels twice. This is in fact one image that took 13 seconds, not a product of PhotoShop. With all that is possible in post-processing, it's often hard to recognize when things are done "in-camera."