| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a zoom optical system capable of correcting a camera shake by an optical system realizing an image shift and having high performance in which F value is bright in spite of its high zooming, an optical apparatus equipped with the zoom optical system and a method for manufacturing the zoom optical system. <P>SOLUTION: The zoom optical system ZL mounted on a digital single lens reflex camera 1 or the like includes, in order from an object side: a first lens group G1 having positive refractive power; a second lens group G2 having negative refractive power; a third lens group G3 having positive refractive power; and a fourth lens group G4 having positive refractive power, at least a portion of lenses within the third lens group G3 comprising a movable lens group Gvr which moves in a direction having a component perpendicular to an optical axis, a distance between the first lens group G1 and the second lens group G2, a distance between the second lens group G2 and the third lens group G3 and a distance between the third lens group G3 and the fourth lens group G4 being variable upon zooming from a wide-angle end state to a telescopic end state. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
