| 摘要 |
PROBLEM TO BE SOLVED: To provide a zoom lens in which the fluctuation of the various kinds of aberration due to variable magnification and focusing is reduced while having a high variable power ratio and which has a vibration-proof function. SOLUTION: This is the zoom lens that orderly consists of a first lens group G1 having positive refracting power, a second lens group G2 having negative refracting power, a third lens group G3 having the positive refracting power, a fourth lens group G4 having the positive refracting power, a fifth lens group G5 having the negative refracting power and a sixth lens group G6 having the positive refracting power from an object side and in which each lens group is moved along a specified orbit at the time of the variable magnification from a wide angle end to a telephoto end, and the fourth lens group G4 constitutes the zoom lens that has a specified constitution and has the vibration-proof function to obtain a vibration-proof effect by moving the fourth lens group G4 in a direction perpendicular to an optical axis. |
