ENG 2/3" 1/2" B4 lens to GH2 / GH3 / GH4 Y-Cable Anton Bauer D-Tap Power and 2.5mm jack to 12 Pin Hirose Female Connector For use with Panasonic GH2, GH3, and GH4 Camera and B4 mount professional video lenses to simultaneously power B4 lens zoom function from the zoom rocker and Release Camera Shutter (take a picture) or Start/Stop Video Record function from the lens VTR button For use with 12v / 14v Anton Bauer Gold Plates, V-mount Plates, Power Tap (D-Tap) outputs Note: Please verify correct equipment polarity before use. Incorrect polarity can result in equipment damage. This cable was designed specifically to power 2/3" lenses (B4) mounted on Panasonic GH2 / GH3 / GH4 Cameras, as well as control the Shutter and Start/Stop Rec function from the lens; 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 12v / 14v Anton Bauer Gold Plates, V-mount Plates, Power Tap (D-Tap) outputs. Provides power to the Zoom Servo functions including Quick Zoom, Cruise Zoom Memory Functions. Provides control of Start/Stop recording from the VTR button on the lens. The 2.5mm 4 pole jack plugs into the remote port. Auto Iris will not function as that requires a handshake from the camera to lens which this cable cannot provide. Solid Construction. The cable is approximately 22" (55cm) in total length. Note: For B4 mount lenses with 12-Pin connector only. NOT for B3 mount lenses. Appearance my vary slightly from the photos.