| 摘要 |
A macro lens system includes a positive first lens group, a diaphragm, a positive second lens group, and a negative third lens group. Upon focusing from an object at an infinite distance to an object at a closer distance, the positive first lens group and the positive second lens group integrally move toward the object without changing a distance therebetween with respect to the negative third lens group which is stationary with respect to an imaging plane in a camera body. The positive first lens group includes a negative first lens sub-lens group and a positive second sub-lens group which are divided at a maximum distance between lens elements in the positive first lens group. The macro lens system satisfies specified conditions.
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