<p>Many thanks to all of you, very useful answers indeed. I got it for half of what it sells on ebay for, so I am inclined to keep it (to be decided after I shoot a roll of film of course). It just looks so cool wide open :D<br>
The focusing ring isn't rubberized and doesn't seem to come off, so no idea how to adjust it. <br>
There is another issue which I was aware of when buying it and don't consider it too serious - the aperture ring won't lock at the "A" position. It just stays there as at any other aperture position, but the little button doesn't pop out to lock in place. Is this potentially a DIY fix? I have tested and the camera definitely controls the aperture correctly, and the ring is pretty tight (too tight even - third issue) so there is no chance that it will slip away from "A" on its own.<br>
So any links on adjusting the focus ring position and servicing the aperture ring would be highly appreciated.<br /><br />Thanks again</p>