| 摘要 |
PROBLEM TO BE SOLVED: To provide a macro-lens in which a camera shake correction mechanism is fitted easily, which is small in the amount of movement for making a camera shake correction to a camera shake correction lens in a direction orthogonal to an optical axis, and which makes the camera correction mechanism compact and power consumption saving.SOLUTION: The macro-lens comprises, in order from an object side, a first lens group of positive refractive power, a second lens group of positive refractive power, and a third lens group of negative refractive power. When focusing takes place, the first and second lens groups move toward the object side with different amounts of movement. When a camera shake correction is made, the entirety or a part of the third lens group is moved in a direction orthogonal to the optical axis. The first lens group has an aperture stop within this lens group, has at least one positive lens and one concave lens on the object side with respect to the aperture stop, and includes a cemented lens formed from at least a negative lens and a positive lens on an image side with respect to the aperture stop. The second lens group includes a pair of cemented lenses. The macro-lens has an absolute value of 0.5 in paraxial imaging magnification. |
