MACRO LENS, OPTICAL APPARATUS, AND METHOD FOR FOCUSING MACRO LENS

摘要

PROBLEM TO BE SOLVED: To provide a compact macro lens having high optical performance for an infinity object through a close-distance object, an optical apparatus equipped therewith, and a method for focusing the macro lens.;SOLUTION: The macro lens includes, in order from an object side, a first lens group G1, a second lens group G2, and a third lens group G3. Combined refractive power of the first lens group G1 and the second lens group G2 is positive. When focusing on the object, the first lens group G1 and the second lens group G2 are moved to an object direction. Each lens group includes one or more positive lenses and one or more negative lenses. Given conditions are satisfied.;COPYRIGHT: (C)2009,JPO&INPIT