connection and operation of the zoom lens structure 1 of this preferred embodiment are the same as the first preferred embodiment and thus they will not be described again the camera 3 comprises a zoom lens group 20 a focus lens group 21 an image sensor 30 and a control unit 31 the image sensor 30 can be a charge coupled device ccd or a complementary metal oxide semiconductor cmos sensor for sensing the light of an image of an object to be photographed to form an imaging the control unit 31 can be a microprocessor control unit a central processing unit cpu or a micro processing unit the control unit 31 is electrically coupled to the driving module 14 if the control unit 31 controls the driving module 14 to drive the zooming driving ring 11 and the focus driving ring 13 to rotate clockwise a side of the groove hole 112 of the zooming driving ring 11 abuts the first guiding protrusion 102 of the shifting barrel 10 to move in the first groove 122 and move the shifting barrel 10 to change the distance between the first lens group 201 and the second lens group 202 of the zooming lens group 20 so as to achieve the zooming effect the control unit 31 controls the driving module 14 to drive the zoom driving ring 11 and the focus driving ring 13 to rotate counterclockwise the groove hole 112 of the zoom driving ring 11 has a predetermined width such that the first.