| 摘要 |
A zoom lens includes, 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, 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, the first lens subunit is moved to have a component perpendicular to an optical axis to change an image-forming position, and a condition 0.5<|(1−&bgr;5n)×&bgr;5p|<2.0 is satisfied. |
