摘要 |
PROBLEM TO BE SOLVED: To provide a high-performance, compact zoom lens suitable as an interchangeable lens attachable to a silver-salt single-lens reflex camera or a digital single-lens reflex camera, and also, that can sufficiently secure a lens back, and to provide an imaging apparatus using the zoom lens. SOLUTION: The zoom lens 1 is constituted by arranging, in order from an object side to an image side: a first lens group GR1 having negative refractive power; a second lens group GR2 having positive refractive power; a third lens group GR3 having negative refractive power; and a fourth lens group GR4 having positive refractive power; in which at a time of zooming from a wide angle end to a telephoto end, the respective groups are moved in the optical axis direction, and the zoom lens satisfies a conditional inequality (1): -5<f4/f1<-2.6, where f1 is the focal length of the first lens group and f4 is the focal length of the fourth lens group. COPYRIGHT: (C)2008,JPO&INPIT
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