I'm taking a long shot here but I need help please. I just inherited my grandfather's Zeiss Ikon Contaflex Super BC or B (it's in the shop right now, I can't remember which it is, this is pathetic). It's a wonderful camera but I'm used to using new Canon EOS Rebels and something about this new camera is confusing me. I have a Pro Tessar attachment, by the way. I can't figure out if this thing has zoom on it like my Rebels do. Or does it just stay at the same distance? What's going on with this thing? This is so pathetic of me, and I don't really care if it doesn't. I would just like to know what I can do. Please help me.