| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a zoom lens facilitating image shake correction and capable of maintaining high optical performance even for the image shake correction.SOLUTION: Provided is a zoom lens including a plurality of lens groups, and changing distances between the adjacent lens groups during zooming. In the zoom lens including a vibration-proof group moving while containing a component in a perpendicular direction to an optical axis for image shake correction, an apex of a lens surface closest to an object side in the vibration-proof group is assumed as an apex A, a length between the apex A and the optical axis is assumed as a shift amount during the image shake correction, a point at which a normal passing through the apex A crosses the optical axis among normals to the lens surface closest to the object side in the vibration-proof group is assumed as a tilt center, a length from the apex A to the tilt center is assumed as a tilt center length, and a shift amount SF1w of the vibration-proof group necessary to correct a specific image shake angle at a wide angle end and a shift amount SF1 of the vibration-proof group necessary to correct a specific image shake angle at a telephoto angle are appropriately set, respectively.</p> |
