Patent ID: 8896930

Claim:
A zoom lens comprising, in order from an object side to an image side, a first lens unit of a positive refractive power, a second lens unit of a negative refractive power, a third lens unit of a positive refractive power, a fourth lens unit of a positive refractive power, and a fifth lens unit of a positive or negative refractive power, the second and fourth lens units being moved during zooming, a distance between the first and second lens units increasing at a telephoto end in comparison with a wide-angle end, wherein the fifth lens unit includes a first lens subunit of a negative refractive power, and a second lens subunit of a positive refractive power located on the image side of the first lens subunit, the first lens subunit is moved to have a component perpendicular to an optical axis to change an image-forming position, and wherein following condition is satisfied: 0.5<|(1−β5 n )×β5 p|< 2.0, where β 5 n denotes a lateral magnification of the first lens subunit, and β 5 p denotes a lateral magnification of the second lens subunit.