Focal Length and Aperture Explained
When I first bought my DSLR (a Digital Rebel XT), I have to admit that I was a bit overwhelmed by all of the jargon that surrounded it. The learning curve was steep, but I think I’ve finally managed to learn the basics. I just wish I’d had this page to help me.
Focal Lengh and Aperture Explained for the Photography Novice:
http://www.photoaxe.com/understanding-the-lens-focal-length-and-aperture/