Ben, You apparently made comparisons without even knowing it. After all, how else can you repeatedly declare that in your opinion, "Canon New F-1 as the best and most robust professional manual focus SLR ever". Anyway, given your extensive background and enthusiasm of the New F-1, I simply wanted to know the basis of your opinion. No doubt that some 30+ years later, there isn't much we don't already know regarding the technical specifications of these fine machines. Myself, I simply have an appreciation of them.