Zoom lens

The embodiment of the utility model discloses a zoom lens. The zoom lens comprises a front fixed group, a zoom group, a compensation group, a diaphragm and a rear fixed group which are sequentially arranged from an object side to an image side along an optical axis, wherein the zoom group, the compensation group and the diaphragm reciprocate along the optical axis during zooming; the front fixed group comprises a first lens with positive focal power; wherein the zoom group comprises a second lens with negative focal power and a third lens with negative focal power which are arranged from the object side to the image side, the compensation group comprises a fourth lens with positive focal power, and the rear fixed group comprises a fifth lens with negative focal power, a sixth lens with negative focal power and a seventh lens with positive focal power which are sequentially arranged from the object side to the image side. According to the technical scheme provided by the embodiment of the utility model, 15 * c