If this is the wrong location for this post I apologize in advance. No doubt a Mod can relocate as necessary... Long story short, I'm trying to identify the last purely mechanical Canon slr. I've done a fair amount of research, but most of what I've found seems to be inconclusive and/or contradictory. Many references seem to 'classify' certain models as being mechanical, but yet when I look at specifications, I find reference to a battery. I'm guessing that in such cases the battery is only needed for the meter? And if that's the case, doesn't that mean that these models could still be used without the battery? I'm looking at the FTb, F1, FTbn, and EF. All of these make reference to a battery, but I'm hoping they can be used without one. Ideally I'm looking at the TFb. The FTbn seems good as well, but I'm having a hard time finding how to differentiate that model from the FTb. When isearch on, say, Ebay, every time I search for FTbn just the FTb comes up. Ultimately, I have no issues setting exposure by eye. That's still what I do even with my digital cameras. I just can't seem to figure out which models I can use without a battery. So the question is: if I got say, and FTb, could I use it without a battery? Any help on clarifying this situation would be greatly appreciated.