| 摘要 |
A zoom lens includes, in order from an object side to an image side, a first, a second, a third, a fourth and a fifth lens units respectively having positive, negative, positive, negative, and positive refractive powers. The first lens unit includes negative, positive, and positive lenses in order from the object side to the image side. The second lens unit includes negative, negative, and positive lenses in order from the object side to the image side. Each lens unit moves during zooming. The predetermined conditional expressions are satisfied. |
