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Author Message   Cbhebert Tinkerer Username: Cbhebert Post Number: 1 Registered: 03-2012 Rating: N/A Votes: 0 Posted on Wednesday, March 28, 2012 - 09:33 pm:    Hello, Looking for instructions on how to take apart the Carl Zeiss Sonnar 180mm 2.8 football style lens. I just got it on ebay and noticed the spring has unhooked itself thus not allowing the iris to operate and only remain wide open.