The shoes are from my 3 year old son and you are right, its a flash array. Every single frame of the Chronos got its own flash. Running at 2142 fps the shoes fall down a very little, but nevertheless there has to be some Photoshop post. I suppose when running at 8000 fps or so the post isn't needed anymore. So I am awaiting the Chronos 5.5. The whole clip is made from just 12 frames.