This lens: http://www.flickr.com/photos/cheffal...2806/lightbox/
There are cleaning marks (residues from a wet cloth) on pretty much all the lenses inside. I managed to unscrew the front element from the aperture part and could clean the back lenses but the front element needs to be disassembled too. It can't be done. The threads will move about 4 millimetres and then stuck. There has been a stop screw but it's drilled away, leaving aluminium particles inside the element, between the lenses. What's the trick here? Anyone here with similar experiences?
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