| Author | Message | ||
     Brcamera Tinkerer Username: Brcamera Post Number: 19 Registered: 08-2010 Rating: N/A |
I think your problem is with the helical guide being out of adjustment. You mentioned that it sits at 5 o'clock in the photo, but the part at 5 o'clock is not the helical guide, it is the control tab for the floating rear element. This is one of the first Nikkor lenses to use a floating rear element. If you look at app. 7 o'clock in your photo, you can see the helical guide beneath the diaphragm control arm. If you put the lens at F/16 you should see the guide and it is held in with three screws. The guide is adjustable-it has a cut in the middle so you can reform it. By slightly spreading it apart, you should be able to adjust the slack. Too much spreading will make focus tight so you will have to work back and forth a bit. I would put some light lube on the sides of the guide where it slides against the focus helicoid. |