Hi all, I have seen a few times a technique in promos where lights seem to move. I'm shooting a spot in the next few weeks we I'd like to use this technique. I've been looking everywhere and I can't seem to find anything about how this is achieved. An example is here: https://vimeo.com/176507317 look at the shots at 04.23-4.35 Any ideas what kind of set up i need to get this? I love how the lights moves around the subject. Thanks all!!!!