Rchard, from this . The 2 newer versions have a tendency to back-focus when shooting at their long-end at distances below 10m on modern Nikons. One reason is because they have a feature for calculating distance that’s absent on this version. I’ll illustrate it in my AF Zoom-Nikkor 80-200mm f/2.8D ED repair article. This one does not do it and it focuses perfectly at closer distances. That issue can be corrected properly which I’ll show in the mentioned article.
I understand that it is possible to fix the tendency to backfocus of the 2 ring version?