Hi! I'm a graphic designer who wants to venture into the world of photography. I want to be able to photograph my own textures, portraits, and take artsy shots to edit later. The ability to play with settings like ISO and aperture speed makes me giddy. Macro would be cool too, but I don't want to dump too much on a lens. I also just need a camera-- some dweeb stole my digital camera in February. I was eyeballing the Canon Rebel XSi. Y/N? Is the autofocus issue too serious?