At 08:54 PM 11/02/1997 -0600, you wrote: > How does the Imax film transport work? I used to repair lots of >16-MM projectors in the eighties and I am fimilar with the geneva mechanism >you describe, at least the way it is on sixteen-s. > > Unless I am totally mixed up, the Imax film is 35-MM film but the >frames are shot length-wise so the whole system would look like a conventional >projector lying on its side. I also seem to recall that the sound is digital >and recorded between the sproket holes. > 70 mm and yes, lying on its side. But as for number of frames per second I think it's still quite slow. I noticed a lot of the flicker as the camera panned when I was able to visit the IMAX in Edmonton. Now I live on Vancouver Island so no IMAX. sob! And... by the way, I can be humble (and wrong). Yes the rolling loop principal was invented by an Australian but developed in 1967 by Canadians. Nothing else to do down under I guess. Check it out here: http://www.moviegoers.com/IMAX/facts.html John Pioneers are the ones, face down in the mud, with arrows in their backs. Automation Artisans Inc. Ph. 1-250-544-4950 PO Box 20002 Fax 1-250-544-4954 Sidney, BC CANADA V8L 5C9