Lens started to act up today, no auto focus, and the camera display f0 (Zero). Has anyone seen this? I have cleaned the contacts and tried on my D810, no joy there also.
Something's wrong... Have you looked at the aperture lever when the lens is off camera? Can it move freely and come back to it's original position after you move it? It could just be a failed connector or electronic wire that's gone loose. Any chance you have a camera shop close by?
Good luck Bill. Keep us informed on the outcome.