So it is the final day of shooting a short film. Everything was carefully lit, our rented Sony FS7 was standing by to record us trashing the set (which we had one try at) and everything was just about perfect to shoot... Except that it wasn't perfect, because it turns out that you need to light in a whole different way for high speed filming. I of course knew this (I didn't at all) and had planned an alternate lighting plot for the scene (nope), and so everything turned o