What (the fuck) is HDR?
A few years back, I was standing in a rock bar in Ibiza (the Pinguin Bar, but that's another story) chatting to a friend of a friend about photography. He introduced me to the concept of HDR over a few beers, so I went back home and did some learning. There are many places where you can read about how HDR works, but this is the quick and dirty answer. Cameras can't see as well as the human eye (which is pretty shit hot when it comes to seeing stuff) - a great example of this is during F1 (Grand Prix? Motorsport? Oh, nevermind...) where a car goes through a tunnel - as the end of the tunnel approaches all you can see is a huge white light. Now, when I drive my car through a tunnel and out the other side I don't have this problem, as my eyes kick the camera's arse at this.