This is freaking cool. HDR Video- they did it with 2 Canon 5Dii’s, as soon I saw it, it all made sense. They have to be using some kind of image splitter and recording with each 5Dii on different exposure settings. I am curious how they blended it together in post, but I dont think it would be too hard. If they have a plugin for After Effects or Premeire Pro I would definitely be interested in it, if not look for someone to make one soon:

HDR Video Demonstration Using Two Canon 5D mark II’s from Soviet Montage on Vimeo