A transport scenario composed of a basic transport from a transport starting point to, e. To achieve this object, in the case-that no zoom lens stop request is provided from the camera-body-side portion, it is judged from information sent from the camera-body-side portion which of a tele direction and a wide direction the moving direction of the zoom lens group is. The de-interlacing unit receives the third field, and reads the first and second fields from the memory to generate a de-interlaced frame accordingly.