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Author Message   Zcetrt Tinkerer Username: Zcetrt Post Number: 1 Registered: 08-2012 Rating: N/A Votes: 0 Posted on Friday, August 10, 2012 - 10:29 am:    Hi to all. I have a Pentacon 29mm F/2.8 MC Auto lens that is clearly decentered. The lens is very soft on left side while the performance in the center and on the right side is great. I came across brief mentions that Pentacon lenses have screws to calibrate the rear element. However, I haven't seen any additional info for the 29mm Pentacon lens. Does anybody know this lens? Is it possible to calibrate it? Is it possible to get service manual or instructions somewhere? The lens is otherwise in superb condition. Thank you for answering my very first post in this great community in advance, Ziga