Zoom lens and imaging apparatus

1. A zoom lens consisting of, in order from an object side to an image side:

a first lens group that remains stationary with respect to an image plane during zooming and has a positive refractive power;

a second lens group that moves along an optical axis during zooming and has a negative refractive power;

a third lens group that moves along the optical axis during zooming and has a negative refractive power;

at least one lens group that moves along the optical axis during zooming; and

a rear group that remains stationary with respect to the image plane during zooming,

wherein all distances between the lens groups adjacent to each other change during zooming,

wherein assuming that

a focal length of the second lens group is f2, and

a focal length of the third lens group is f3,

Conditional Expression (1) is satisfied, which is represented by

0.001 < f 3/ f 2 < 0.14  (1), and

wherein the second lens group consists of one negative lens.

2. The zoom lens according to claim 1 , wherein assuming that

a lateral magnification of the second lens group at a telephoto end is β2t,

Conditional Expression (2) is satisfied, which is represented by

0.1 < 1 / β2 t < 1  (2).

3. The zoom lens according to claim 1 , wherein assuming that

a distance on the optical axis between a lens surface closest to the image side in the first lens group and a lens surface closest to the object side in the second lens group at a telephoto end is Db12, and

a focal length of the first lens group is f1,

Conditional Expression (3) is satisfied, which is represented by

0.004 <Db 12 / f 1 <0.8  (3).

4. The zoom lens according to claim 1 , wherein assuming that

a distance on the optical axis between a lens surface closest to the image side in the first lens group and a lens surface closest to the object side in the third lens group at a wide-angle end is Db13, and

a difference in a direction of the optical axis between a position of the third lens group at the wide-angle end and a position of the third lens group at a telephoto end is D3wt,

Conditional Expression (4) is satisfied, which is represented by

0.01 < Db 13 / D 3 wt < 0.12  (4).

5. The zoom lens according to claim 1 , wherein assuming that

a focal length of the first lens group is f1, and

a focal length of the second lens group is f2,

Conditional Expression (5) is satisfied, which is represented by

−0.4 < f 1 / f 2 < −0.01  (5).

6. The zoom lens according to claim 1 , wherein assuming that

an average value of refractive indexes of all lenses included in the second lens group at a d line is Nave, and

an average value of Abbe numbers of all the lenses included in the second lens group based on the d line is νave,

Conditional Expression (6) is satisfied, which is represented by

1.8 < N ave+ 0.006× ν ave < 2.1  (6).

7. The zoom lens according to claim 1 , wherein assuming that

a focal length of the zoom lens at a telephoto end is ft, and

a focal length of the first lens group is f1,

Conditional Expression (7) is satisfied, which is represented by

1 < ft / f 1 < 5  (7).

8. The zoom lens according to claim 1 , wherein assuming that

a lateral magnification of the rear group is βr,

Conditional Expression (8) is satisfied, which is represented by

−5 < β r < − 1  (8).

9. The zoom lens according to claim 1 , wherein the lens group disposed to be adjacent to the object side in the rear group has a negative refractive power.

10. An imaging apparatus comprising the zoom lens according to claim 1 .

11. A zoom lens consisting of, in order from an object side to an image side:

a first lens group that remains stationary with respect to an image plane during zooming and has a positive refractive power;

a second lens group that moves along an optical axis during zooming and has a negative refractive power;

a third lens group that moves along the optical axis during zooming and has a negative refractive power;

at least one lens group that moves along the optical axis during zooming; and

a rear group that remains stationary with respect to the image plane during zooming,

wherein all distances between the lens groups adjacent to each other change during zooming,

wherein assuming that

a focal length of the second lens group is f2, and

a focal length of the third lens group is f3,

Conditional Expression (1) is satisfied, which is represented by

0.001 < f 3 / f 2 <0.14  (1),

wherein assuming that

a focal length of the first lens group is f1, and

a focal length of the second lens group is f2,

Conditional Expression (5) is satisfied, which is represented by

−0.4 < f 1 / f 2 < −0.01  (5), and

wherein the lens group disposed to be adjacent to the object side in the rear group has a negative refractive power.

12. The zoom lens according to claim 11 , wherein the second lens group consists of one negative lens.

13. The zoom lens according to claim 11 , wherein assuming that

a distance on the optical axis between a lens surface closest to the image side in the first lens group and a lens surface closest to the object side in the second lens group at a telephoto end is Db12, and

a focal length of the first lens group is f1,

Conditional Expression (3) is satisfied, which is represented by

0.004 < Db 12 / f 1 < 0.8  (3).

14. The zoom lens according to claim 11 , wherein assuming that

a distance on the optical axis between a lens surface closest to the image side in the first lens group and a lens surface closest to the object side in the third lens group at a wide-angle end is Db13, and

a difference in a direction of the optical axis between a position of the third lens group at the wide-angle end and a position of the third lens group at a telephoto end is D3wt,

Conditional Expression (4) is satisfied, which is represented by

0.01 < Db 13 / D 3 wt < 0.12  (4).

15. The zoom lens according to claim 11 , wherein assuming that

a focal length of the zoom lens at a telephoto end is ft, and

a focal length of the first lens group is f1,

Conditional Expression (7) is satisfied, which is represented by

1 < ft / f 1 < 5  (7).

16. An imaging apparatus comprising the zoom lens according to claim 11 .

17. A zoom lens consisting of, in order from an object side to an image side:

a first lens group that remains stationary with respect to an image plane during zooming and has a positive refractive power;

a second lens group that moves along an optical axis during zooming and has a negative refractive power;

a third lens group that moves along the optical axis during zooming and has a negative refractive power;

at least one lens group that moves along the optical axis during zooming; and

a rear group that remains stationary with respect to the image plane during zooming,

wherein all distances between the lens groups adjacent to each other change during zooming,

wherein assuming that

a focal length of the second lens group is f2, and

a focal length of the third lens group is f3,

Conditional Expression (1) is satisfied, which is represented by

0.001 < f3/ f2 < 0.14 (1),

wherein assuming that

a focal length of the first lens group is f1, and

a focal length of the second lens group is f2,

Conditional Expression (5) is satisfied, which is represented by

−0.4 < f1/ f2 < −0.01 (5), and

wherein assuming that

an average value of refractive indexes of all lenses included in the second lens group at a d line is Nave, and

an average value of Abbe numbers of all the lenses included in the second lens group based on the d line is νave,

Conditional Expression (6) is satisfied, which is represented by

1.8 <N ave + 0.006 ×νave < 2.1  (6).

18. The zoom lens according to claim 11 , wherein assuming that

a lateral magnification of the second lens group at a telephoto end is β2t,

Conditional Expression (2) is satisfied, which is represented by

0.1 < 1 / β 2 t < 1  (2).

19. The zoom lens according to claim 17 , wherein assuming that

a lateral magnification of the rear group is βr,

Conditional Expression (8) is satisfied, which is represented by

−5 < β r < − 1  (8).

20. An imaging apparatus comprising the zoom lens according to claim 17 .