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Author Message   Betlog Tinkerer Username: Betlog Post Number: 1 Registered: 09-2011 Rating: N/A Votes: 0 Posted on Tuesday, September 06, 2011 - 07:56 am:    Seeking schematic/mechanical diagram for the Sigma 600mm f8 mirror. Or anyone who can tell me how the small mirror mounted in the middle of the front element is removed. Looking at it from the inside it appears to be glued or screwed into it's metal housing in the center of the front element, but I do not want to touch it at all until I have some idea of how, or if, it comes out. Thanks