that's probably what I'll do Sometime within the next month or 2 (hopefully), it'll be mounted on my t2i body haha and to answer your question, I have no idea if the t2i has in-body autofocus lol I'm not an expert at all, I don't know all these kinds of things... yet! I'll be learning a bunch of shit soon though! I'm applying for professional photography, so if I get accepted, I'll learn all kinds of shit lol can't wait!