| 摘要 |
A zoom lens system includes a negative first lens group, a positive second lens group, and a positive third lens group, in that order from the object side. Upon zooming from the short to long focal length extremities, the first through third lens groups move along an optical axis direction so that the distance between the first and second lens groups decreases, and the distance between the second and third lens groups increases. The first lens group includes a negative glass lens element and at least two plastic lens elements, in that order from the object side, and wherein the following condition (1) is satisfied: |f1/f1pc|<0.04 . . . (1), wherein f1 designates the focal length of the first lens group, and f1pc designates the combined focal length of the plastic lens elements that are provided within the first lens group. |
