Visible crew/equipment: At the end of the episode when Number 6 gives Number 2 the device and tells him to leave the island immediately you can see the shadow of the boom microphone on the stone wall behind them at the top right of the screen. (00:47:17)
Visible crew/equipment: Just before Number 6 and the woman break into her father's watch shop there is a shot of the shop's front door, as the camera moves in on the door you can see the face of the cameraman reflected in the door glass in the bottom right. (00:32:01)
Chosen answer: We're led to believe Rover is some kind of robot in the series. According to books on the show, Patrick McGoohan was looking for an unusual guardian for the Village, looked up at the sky, and saw a weather balloon, which was what Rover was.
Captain Defenestrator