`ABSTRACT
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`A zoom lens system includes: a first lens group having positive power; a second lens
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`group having negative power; a third lens group having positive power; a fourth lens group having
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`
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`negative power; andafifth lens group having positive power. Thefirst lens group is made up of
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`asingle lens. The second lens group is made up of four lenses. While the zoom lens system is
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`zooming from a wide-angle end toward a telephoto end during a shooting session, the fifth lens
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`group does not movebutthe first to fourth lens groups moveto changeintervals between the lens
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`groups.
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