Patent ID: 8040615

Claim:
A zoom lens comprising a plurality of lens groups including, in order from an object side: a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group; and a fourth lens group; 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, a distance between the second lens group and the third lens group varying, and the most image side lens group among the plurality of lens groups being moved along an optical axis, and the following conditional expressions being satisfied: 3.000 <F 1 /Fw< 4.4000 0.900 <F 2 /Fw<− 0.500 where Fw denotes a focal length of the zoom lens in the wide-angle end state, F1 denotes a focal length of the first lens group, and F2 denotes a focal length of the second lens group.