I have a canon T2i with kit lens but I really need a good zoom lens but would love a lens that would/could be my primary go to lens. You know a lens that could maybe take the place of my kit lens and have some zoom to it. If this is even possible, I am complete newbie to DSLR and admit I don't know much at all about lens or photography. I am learning as I go. I would like to keep it under $300 at moment and I know that won't get me much but it's all I can afford.