It was pretty dark already when the whole class lined up at the edge of a forest. We set our cameras at ISO 400, f 16, and a very slow shutter speed of 15 seconds. Our instructor, Layne Kennedy, had a red flashlight. We pushed our shutter buttons and he walked quickly through the woods in front of us twirling the flashlight. The result was this trail of light. We were amazed that you can’t see him at all, because he’s moving quickly enough that the camera cannot record his image in the low light.