I finally did it: got a new autofocus lens for the Nikon. Bring on the 50mm 1.4 lens, baby! Too bad they sold the used one YESTERDAY! I wound up having to go with a brand new one, and did decide (with some encouragement from my support crew) to spend the extra money on to get the 1.4 instead of the half as expensive 1.8, but I think I'll be happier with it. I'm loving the bigger aperture and have been messing with settings, focus, autofocus and the flash all afternoon.