David, I do understand what you just laid out.  I believe that Dino saw the original film, but Chris doesn't have a copy, I think I can safely say.  As you said, a half a dozen only have seen that version over the years.   What am I missing?  Is Chris saying that there are multiple Z films floating around whose frame compositions are different depending on which version you're seeing?  Where did the black and white version come from?  And where did the color version come from?  Does