Patent ID: 8587875

Claim:
A zoom lens comprising, in order from an object side along an optical axis: a first lens group having negative refractive power; a second lens group having positive refractive power; and a third lens group having positive refractive power; upon zooming from a wide-angle end state to a telephoto end state, a distance between the first lens group and the second lens group varying, and a distance between the second lens group and the third lens group varying, and the following conditional expression being satisfied: 2.70<( ft 2 ×Dw 23)/( fw 2 ×TLw )<4.0 where fw denotes a focal length of the zoom lens in a wide-angle end state, Dw 23 denotes a distance between the second lens group and the third lens group in the wide-angle end state, ft denotes a focal length of the zoom lens in the telephoto end state, and TLw denotes a total lens length of the zoom lens in the wide-angle end state.