Native connector is for Canon ENG lenses; also has adapter for Fujinon lenses, such as what the Sony EX3 uses as its stock lens. Choose Canon or Fujinon lens control with the flip of a switch on the Controller. Zooming speed is infinitely variable and very smooth with the use of a rocker molded for control by one's thumb. Start and stop recording in the camera with this unit as well. It grips to the handle of your tripod head. Excellent condition.