Not long ago, my father gave me his old Nikkor 28 f/2.8D lens which seems to be in perfect shape despite being at least 15 years old. The most noticable difference is the aperture ring which non of my G lenses have it. BTW, I own a Nikon D7000.
My Nikon D7000 works fine with my other G lenses. However, it seems to have a problem with the Nikkor 28 2.8 lens; The aperture information is not sent correctly from the lens to the camera. For example when I turn the aperture ring to f/22, the camera's LCD displays it as f/11 and when I turn it to f/8 or wider, it shows f/2.8.
The aperture setting (f6) of the camera is set to "Aperture ring". If I set it to "Sub-command dial", the camera would show a fEE error, so I changed the setting to Aperture ring.
What am I supposed to do to solve this problem?