Here’s a technique that Sara and I played with on Sunday. It’s really easy to do. All you need is a tripod and Photoshop. Just keep a stationary background, take a few pictures with something different going on, and pull them all into Photoshop as layers. From, there, just erase from the top layers the things in the lower layers that you want to reveal. I’ve got some more ideas that we’ll try to delve into this week.