Visible crew/equipment: Number 6 enters the room with the huge globe, and we "follow" him around a map table. As the camera passes the table, it films its own shadow falling across the map.
Visible crew/equipment: When Number 48 jumps from the council table, there's a clear shadow on the left of someone holding up a still camera.
Chosen answer: We were never told. In the series finale [Spoiler alert] Number 6 demands an answer to that question, only to be shown his own reflection.
Jean G