Reply to thread

Message: <blockquote data-quote="WayneF" data-source="post: 322380" data-attributes="member: 12496"><p>The D7000 supports non-CPU lenses (see menu, manual page 159).   I have a very old Nikon 55mm f/3.5 macro lens, modified to AI.  It provides an old M2 extension tube to get 1:1.   The lens alone works fine on a D300 or D800 (not AF, but it meters OK), but when I add the M2 tube, I lose ability to set an aperture with the dial on the camera, it won't budge off of f/3.5.  However, the DOF button will stop it down OK.   I'm thinking the tube might be shorting an electrical contact or something?  Because if I instead substitute a Kenko extension tube, then it all works OK, and camera A or M mode can work OK (can meter).  Probably your newer PK-13 is superior in that way, I'm guessing it works and meters OK too.</p></blockquote><p></p>