Hi folks, I have some experience with photography but a lot of what I know I learned a while back, and some of it I don't remember so well. Here's one thing I keep coming across that I don't quite understand. I know about film speed, and grain, that kind of thing, but I'm not sure what someone means when they say they "push" film to a higher speed. For example, one guy talking about Ilford 3200 speed film says: "The true speed of this film is around 1000-1600. I get much better results at these speeds but sometimes I have no choice but to shoot at 3200." I don't understand that. How do you shoot a film at another speed? Is he saying he sets his light meter to 1600? Thanks in advance.