| 摘要 |
PROBLEM TO BE SOLVED: To provide a zoom lens that has a camera shake compensation function, can give good optical performance while including a wide angle range and a standard focal distance range, and can meet demands for further reduction in size and weight. ! SOLUTION: The zoom lens includes, successively from an object side, a first lens group G1 having a negative refractive power as a whole, a second lens group G2 having a positive refractive power as a whole, a third lens group G3 having a negative refractive power as a whole, and a fourth lens group G4 having a negative refractive power as a whole. Upon varying magnifications from a wide angle end to a telephoto end, an air gap between the first lens group G1 and the second lens group G2 decreases; an air gap between the second lens group G2 and the third lens group G3 increases; and an air gap between the third lens group G3 and the fourth lens group G4 varies. Camera shake is compensated by moving at least a lens L7 or L8, which constitutes the th |
