Yes, that does help a lot, actually! There are a few 75mms for sale around where I live, and I think I should just have a look at them using my 6x12 back. I'm really torn... I like the 617 format, of course, but I always end up wishing for a pano cam when I'm deep into the back country and have to lug around a tent and cooking gear. I can see myself carrying a 612, but (as I found out the hard way) not a 4x5, and probably not a 617. Better to have something you like second best, but actually can carry anywhere.
Very nice images btw! I've been to Ephesus a couple of years ago and loved it. I know it sounds weird, but then, I'm a biologist - I found it amazing how so many animals make the ruins their home with astounding ease.