The history of cameras goes back more than one hundred and fifty years. The History of Cameras App doesn't go through every aspect of it, but it does cover the highlights...in an interesting way. There are screens that show specific bits of information, such as how Richard Leach Madox perfected the dry plate. Accompanying each of these nuggets is a button that lets you see ... kind of ... how the process works. It's really a fun and very interesting App ... and it's free. If you are interested in photography, try this one for sure.