Patent ID: 7944622

Claim:
A zoom lens consisting, in order from an object side thereof, of: a front side lens unit having a negative refracting power at a wide angle end; and a rear side lens unit having a positive refracting power at the wide angle end, wherein the front side lens unit comprises a first lens unit located closest to the object side and having a positive refracting power and a second lens unit located on an image side of the first lens unit and having a negative refracting power, the distance between the first lens unit and the second lens unit being larger at a telephoto end than at the wide angle end, the rear side lens unit comprises a third lens unit located closer to the object side at the telephoto end than at the wide angle end and having a positive refracting power, the distance between the third lens unit and the second lens unit being smaller at the telephoto end than at the wide angle end, and the third lens unit satisfies the following condition: 0.01 <f 3 /f t <0.16 (1) where f 3 is a focal length of the third lens unit, and f t is a focal length of the entire zoom lens system at the telephoto end, wherein the second lens unit satisfies the following condition: 0.01 <|f 2 |/f t <0.10 (3) where f 2 is a focal length of the second lens unit, and f t is the focal length of the entire zoom lens system at the telephoto end.