| 摘要 |
PROBLEM TO BE SOLVED: To provide a wide angle zoom lens having an angle of view exceeding 120 degrees, in which a focus lens group is reduced in weight by appropriately setting power arrangement and which is suitable for inner focus with a small image height change rate.SOLUTION: The wide angle zoom lens includes, in order from the object side, a first lens group G1 having negative power, a second lens group G2 having positive power and consisting of a single lens, a third lens group G3 having positive power, a fourth lens group G4 having positive power, and a fifth lens group G5 having positive power. When focusing from the object side infinity to an object at a short distance, the second lens group G2 is moved toward the image plane side. The wide angle zoom lens satisfies predetermined conditions. |
