| 摘要 |
A zoom lens system which includes, in order from an object side, a first lens unit having a negative refractive power; a second lens unit having a positive refractive power; and a third lens unit having a positive refractive power, a space between the lens units is changed to perform magnification change; a lens of the second lens unit closest to an image side has a concave surface which faces the image side; a lens of the third lens unit closest to the object side is a negative lens whose concave surface faces the object side; and during the magnification change, the space between the second lens unit and the third lens unit is larger in a telephoto end than in a wide-angle end.
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