| 摘要 |
A zoom lens, including in order from an object side to an image side: a first lens unit; a second lens unit; a third lens unit; and a fourth lens unit, in which the second lens unit includes four lenses as a whole, in which a first lens and a second lens are disposed successively in order from the object side to the image side, and the following conditional expressions are satisfied: 7.8<f1/|f2|<12.0; 1.20<f21/f2<1.63; and 0.04<O12/D2<0.15, where f1 represents a focal length of the first lens unit, f2 represents a focal length of the second lens unit, f21 represents a focal length of the first lens, O12 represents a distance from a lens surface vertex of the first lens on the object side to an object side principal point position of the second lens unit, and D2 represents a thickness of the second lens unit on an optical axis.
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