... it is able to go smoothly and stable Professional 3-axis headZ-axis system :allows the camera to rotate in a horizontal ... includes: 2m-20m camera cranes,6m-8m manned cranes,thres-axis electronic control heads,3Delectronic control heals,stainless steel tracks,rubber ... start /stop control Aperture /focusing lens servo system is available for Canon and Fujisu 6-12meters camera jibs use a tripod ...