| 摘要 |
<p>A zoom lens system is provided with, in order from the object side to the image side, at least a first lens group having positive power, and a second lens group having negative power, increases the distance between the first lens group and the second lens group during zooming from a wide angle end to a telephoto end when an image is captured, and satisfies conditions: D1>D2 and D3>D2 at the same time, where D1 is the effective diameter of an aperture stop at the wide angle end, D2 is the effective diameter of the aperture stop at an intermediate position, and D3 is the effective diameter of the aperture stop at the telephoto end.</p> |
