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John, nice to see that the Apo-Telyt seems to work just fine for you!
Yes, it is very sharp, high in contrast on my D800 - things my venerable 200/4 AIS does not have. It's heavy and a bit bulky, so it likely won't go on any mountaineering expeditions any time soon - the 70-200/4 VR Nikkor is the likely candidate for that.
I wish Nikon would make a compact, lightweight outstanding 180 or 200mm f/4, but I won't hold my breath . . . .