The nicest thing about the 80-200 f/4 Ai-S is the generous focusing ring "throw", and the numerous marked distances it has. Also, plenty of surface on which to make either tape, or pencil marks, to show front and rear DOF values for the color-code f/stops, OR to carefully measure out and to mark other, specific, focusing distances.
The lens has good performance clear out to the far edges, as you can see in these two crops of a 12MP D2x image shot with bounce flash at f/6.3 I would estimate. These have been compressed, and are from my Facebook pages. These would be better from a higher-MP camera with a better sensor than the D2x had.