I am going on vacation and would like a better lens to take with me. Also I have a fish tank that I love to photograph. So what I am looking for is something that would be good at taking close-ups of my tank as well as good for general shooting, for example at sea world. I Still have the canon 350D. Here is what I was thinking: Canon Telephoto EF 100mm f/2.8 USM Macro Autofocus Lens So what do you think? :thumbup::thumbdown: ?