AmbientLight- what do you mean by 'manual zones'? Is it the focus type?
I think what "manual zones" means is that you don't let the camera decide where the focus point should be and you place the focus point (either spot or single point) where you want to focus using the multi-controller joystick. This is how I use my 7d exclusively. I never focus-lock and recompose using the center focus point since all 19 focus pts are cross-type.