IIRC, Voyager's camera is on a movable arm. The probe itself has never "turned" and always has its antenna dish pointed at Earth. New Horizons had a different

IIRC, Voyager's camera is on a movable arm. The probe itself has never "turned" and always has its antenna dish pointed at Earth. New Horizons had a different design and works more like you describe; where the whole probe has to turn to point the camera.