I'm heading out in a couple of hours to take some portrait shots. I'm checking my gear, making sure everything is working OK, and I notice something I haven't noticed before. (Nikon D80, btw) When I press the shutter half-way to lock in focus, only the center focus indicator locks in. This is true whether I am in single, continuous, or automatic focus mode. This happens only when the camera shooting mode is not automatic. In auto, I get the 'moving' focus areas that change as I aim the camera differently. Isn't this what 'continuous' focus zone mode does? Can I not use continuous in aperture priority, shutter priority, or manual? I ask because it seems as though I have in the past. Maybe I'm just crazy. I appreciate any quick answers.