I need some help deciding which 70-200mm lens to get. I'm a college student so money is a bit tight at the moment. Right now I have about $1,000 saved up for a lens. My question is should I just get the f/4 non IS version now? Or save some more for the f/4 IS or save even more for the f/2.8 non IS or f/2.8 IS. And then if I got the f/2.8 IS should I go new or old version?


I have a T2i and shoot a lot of sports and portraits.