About this item -Electric camera slider 6 in 1 with tracking shooting, panoramic shooting, time lapse, video capture, free Set starting point and ending point -For fixed point shooting, you can adjust the red knob on both sides of the slider to the upper left corner and the lower right corner -For 120 degrees Panorama shooting, slide the red knob on both sides of the camera slider to the lower left corner and the upper right corner -Set the starting and ending points as needed, The sliding...