hello all, in the past couple years i have been shooting mainly medium format. however, i still have my first camera-- a canon ae-1-- for walking around or going on a daytrip. recently, my dad's ae-1 went to the great camera resting grounds, and i am thinking of giving him mine, since it works perfectly well. the question is, what to replace it with: another ae-1, or with an f-1? i am a little unclear on what differentiates the one from the other. at the heart of it, is it just that the f-1 is more mechanical? (ie: it does not NEED a battery to work like the ae-1 does) thanks for your time!