(this is an x-post from DPR) I'm finding it impossible to get a positive focus lock using Continous Servo Autofocus on both my D2X & H. I can't seem to get a good lock on a goose in low light from about 200+ ft away. In doing some testing, I found that the focus lock indicator blinks, and never gets a positive focus lock, with the front & back focus arrows and the lock indicator continously blinking. This is happening whether it's set on Single Focus point or one of the Tracking Focus selections. It's doing this even with my D2X (w/200-400VR+TC 1.4) mounted on tripod, aiming at a static object, I did this same test using my D2H (w/70-200VR), handheld this time, with the same results. Is this normal? When I use the Single Servo Autofocus, it locks on just fine. fwiw, these little tests were done in very low lighting conditions if that makes any difference.