A zoom lens (ZL) of the telephoto type comprises the following lens groups in the order from the object side: a first lens group (G1) having positive power; a second lens group (G2) having negative power; a third lens group (G3) having positive power; and a fourth lens group (G4) having positive power; wherein, upon zooming, the first lens group (G1) and the fourth lens group (G4) move to the object side; and wherein, upon focusing, the fourth lens group (G4) comprises a front lens group (G4F), and a rear lens group (G4R) arranged with an air space in between and the rear lens group (G4R) is moved along the optical axis of the zoom lens.
展开▼
