| 摘要 |
A zoom lens ZL having, in order from an object, a first lens group Gl having positive refractive power, a second lens group G2 having negative refractive power, a third lens group G3 having positive refractive power, and a fourth lens group G4 having positive refractive power, wherein the conditional expression 2.70 < TLt/(fw x ft) ½ < 3.70 as well as the conditional expression 0.05 < D1/ft < 0.29 are satisified, where TLt denotes a total length of the zoom lens ZL in a telephoto end state, fw denotes a focal length of the zoom lens ZL in a wide-angle end state, ft denotes a focal length of the zoom lens ZL in a telephoto end state, and D1 denotes a thickness of the first lens group G1 on the optical axis.
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