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Olympfix
Tinkerer
Username: Olympfix

Post Number: 42
Registered: 05-2009

Rating: N/A
Votes: 0

Posted on Sunday, May 01, 2011 - 02:24 am:   

Don't know that lens, but many lenses have their focussing rings held against the helicoid by grub screws under a rubber focussing ring cover. They sometimes come loose and simply need tightening with the lens focussed correctly at infinity.

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