| 摘要 |
A zoom lens system includes, from the object-side to the image-side thereof, a first lens group, a second lens group, and a third lens group. The first lens group includes a first lens and a second lens. The second lens includes a third lens, a fourth lens, and a fifth lens. The fourth lens and the fifth lens are attached to each other. The third lens group includes a sixth lens. The zoom lens system satisfies the following conditions: 0.35<f2/f3<0.7; 1.8<|f45/Fw|<3; 0.5<|f1|/Ft<0.9; 0.7<f3/Ft<1.2, wherein: f1 is a focal length of the first lens; f2 is a focal length of the second lens; f45 is a focal length of the attached fourth lens and fifth lens; Fw is a focal length of the zoom lens system at a wide-angle end; Ft is a focal length of the zoom lens system in a telephoto state.
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