| 摘要 |
A zoom lens system comprises: a first lens group with a negative refractive power, a second lens group with a negative refractive power, a third lens group with a positive refractive power and a fourth lens group with a positive refractive power. When zooming between the wide mode and the tele mode, the second, third, and fourth lens groups move along the optical axis, the zoom lens system of the present invention can truly be miniaturized, and the zoom ratio is ensured within 2.8-3.0.
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