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Author Message   Kminov Tinkerer Username: Kminov Post Number: 1 Registered: 11-2011 Rating: N/A Votes: 0 Posted on Tuesday, November 01, 2011 - 01:38 pm:    Hi all, I have a carl zeiss jena 50/4 flektogon with the aperture stuck at 4, ring moving but to no effect on the blades. is it easy to fix this or should i take it to a pro?