BBC Four: Genius of Photography

I thought that this show was very informative, and there were a lot of interesting techniques that were shown. For example, in the opening of the show they did a demonstration where they put a black tarp or some material covering all of the windows in the room so that it was complete darkness, and then cut a small hole in the shape of a circle. I don't understand how it works, but they were able to view the scene outside reflected on their wall, only upside down. It was amazing, and I even pressed rewind to see if I missed the explanation of how this was possible, but I couldn't figure it out. I also liked how it showed the different ways of producing negatives, such as the traditional and also the use of mirrors. Even though I have taken a couple photography classes and learned a lot about manual cameras, I still have a lot to learn and I think that this documentary was good in that aspect. I just wish it explained the process a little bit more than it did.