Hi, I have got an F3 plus 2 MF lenses, plus an EM with a 50mm lens. I was thinking to swap it against an F80. Problem is I don't see very well without glasses, and focus is always a pain for me. Plus whatever "G" lens I buy, the F3 will not take. Should I or should I not? I understand I am giving up a lot of ruggedness versus autofocus. What to do?