| 摘要 |
A zoom lens includes, in order from the object side, a negative lens unit, a positive lens unit and a positive lens unit. During zooming from the object side, the second lens unit moves, the distance between the first lens unit and the second lens unit decreases, the distance between the second lens unit and the third lens unit increases. The second lens unit has two lens components including, in order from the object side, a positive front lens component and a rear lens component. The third lens unit is composes of two lens components including, in order from the object side, a front lens component and a positive rear lens component. An aperture stop is disposed closer to the image side than the first lens unit and closer to the object side than the rear lens component in the second lens unit, and the aperture stop moves integrally with the second lens unit along the optical axis direction during zooming from the wide angle end to the telephoto end. |
