I am using tokina 116 with D7000. I think i got a issue hope that can share with you
I switch the focus mode to manual on the lens. When I half pressed the shutter release button it won't focus of course but I still could hear the buzzy sound. It seems that the in-camera motor still in operation.Unless I switch the auto/manual from the camera body the in-camera motor will stop operating. But it doesn't make sense I have to switch from camera body, right?
I am wondering if your camera like this ?