Talk to me about the 80-200/4 R. Have seen Doug Herr's comments, dug up what I could from the electronic ether, and have decided to give one a try (on a 1DS2).
Would love to see some further samples of what the sucker can do. The MTF charts, especially in the mid-range look nice.
The idea is as a walk-about/hiking moderate telephoto that will give me the opp. to cut back or extend the FL in a pinch. It will probably sit at 100-135mm most of the time.