Schneider Kreuznach 1:1.8/7-80
Posted 22 April 2008 - 02:07 PM
I've just bought a Nizo 801 (my third Nizo but first of this type), which seemed to be in pretty good working order. However I now realise that at the long end of the zoom, it will not focus, despite hitting the infinity mark on the focus ring. Closer inspection also reveals that when the focus ring is at it's closest distance (a stated 1.5m), the tiny retaining screw which stops the lens passing either end of its focusing limit is slightly visible under the lens collar. This would suggest to me that somehow the focusing part of the lens has 'moved up' by a thread or two, going too far back when focusing close, and not coming forward quite enough to hit it's genuine infinity mark.
Does that sound plausible? Has anyone else had similar problems? If so, any advice would be greatly appreciated.
Thanks in advance
Posted 22 April 2008 - 03:56 PM
Posted 22 April 2008 - 03:58 PM
Edited by Matt Kemp, 22 April 2008 - 04:00 PM.