Pan/Tilt/Zoom
Pan/Tilt/Zoom Cameras are, at the most basic level, comprised of two pieces; the dome housing, and the camera module. This is why you can have a 23X, 30X or 36X module (subject to availability) in the same G4-SD or G4-EC dome housing. The dome housing handles the Pan and Tilt function, while the camera module handles the image and Zoom functions. span>
36x Optical Zoom Infrared PTZ Speed Dome
600TVL Color 700TVL B&W EFFIO-S 36x Zoom High Speed PTZ
600TVL Color, 700TVL B&W Sony EFFIO-S 36x Zoom Module Middle-Speed PTZ
3-9mm 3X 2MP Mini IP-PTZ