Turns out on my D7000 there are 12 separate tuning values for individual lenses. The stored numbers are used when particular lens is mounted on the camera. After running a few tests, my focus was half a foot off! I'd get clear focus 6 inches after my subject. Fine-tuning -10 fixed it. This is very spooky stuff as I guess some folks go on shooting for years without knowing about these tweaks.
|Thunderheads With Egret by Buzz Lightyear|
|Double Rainbow; Abiquiu, NM, USA. by abiquiuense|
from After the Rain