1- 12v Male to Hirose 12 Pin Female Power Cable - B4 mount lenses to power video lens zoom function NEW! PROFESSIONALLY CONSTRUCTED! LOWER PRICE! For use with any of our 12v rechargeable batteries: HERE Guaranteed to work with our batteries. If using a different battery or adapter, verify correct equipment polarity before use. Equipment damage may be caused if proper polarity is not observed. This cable was designed specifically to power 2/3" lenses (B4) mounted on Panasonic AF100, GH1, GH2, GH3, GH4, Olympus PEN, OM-D EM-5, Sony NEX and other digital Cameras, however it will power all types listed below. Powers any 1/3" 1/2" 2/3" Fujinon Nikon Canon Angenieux Schneider B4 lens Servo having a Hirose 12 Pin Male connector: Source power from a 12v battery or AC to DC 12v Power Supply (DC 5.5x2.1mm connector). Provides power to the Zoom Servo functions including (Fujinon) Quick Zoom, Cruise Zoom Memory Functions. Provides power Iris return. Auto Iris will not function as that is a function that requires a handshake from the camera to lens which this cable cannot provide. Solid Construction. Over-molding on both ends. 12" (30cm) length. Note: For B4 mount lenses with 12-Pin connector only. Not for B3 lenses. If you need a cable for a B3 lens, go here.