I am new to photography and am looking for advice between three different cameras. The three I am looking at are the Caonon EOS Rebel Ti, Pentax *ist, and the Minolta Maxxum 5. Without having previous experience I am not sure what features are really necassary. Does the number of focus zones really make a huge difference (*ist = 11, Ti and Maxxum 5 = 7)? I just need some expert opinions.