JPH09218348A - Photographic lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the off-axis image point movement error of a photographic lens system which has high close-up capability. SOLUTION: This lens has a 1st lens group with positive refracting power and a 2nd lens group with positive refracting power in order form an object side. For focusing from an infinite-distance body to a near object, the 1st lens group Gr1 and 2nd lens group Gr2 are both moved to the object side. For hand shake correction, at least part of the 2nd lens group Gr2 is moved at right angles to the optical axis. Further, 0.25<|βmax| holds for the photographic power βmax in the shortest-distance focusing state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a taking lens. More specifically, the present invention relates to a taking lens suitable for close-up photography of a single-lens reflex camera.

[0002]

2. Description of the Related Art Conventionally, one of the causes of failure in photography is
There was an image blur due to camera shake (so-called camera shake).
Further, in recent years, the demand for close-up photography has increased, and various close-up photography lenses (so-called macro lenses) have been developed.
Has been released. However, since the depth of focus becomes shallower as the shooting magnification increases, the possibility of camera shake is extremely high in a close-up lens. As a result, it is no exaggeration to say that the failure of close-up photography is due to camera shake.
Therefore, it is desired that the close-up photographing optical system be provided with a camera shake correction function.

A close-up lens having a camera shake function is
JP-A-7-152001 and JP-A-7-26112
No. 6 publication. Japanese Patent Laid-Open No. 7-15200
The close-up lens described in Japanese Patent Publication No. 1 has a positive / negative positive three-lens configuration, and the entire third lens group is moved as a camera shake correction group in the direction perpendicular to the optical axis to correct the camera shake. The close-up lens disclosed in Japanese Patent Laid-Open No. 7-261126 has a positive / negative positive three-lens structure, and a part of the third lens group is moved as a camera shake correction group in a direction perpendicular to the optical axis to prevent camera shake. Correcting.

[0004]

However, the taking lenses described in Japanese Patent Laid-Open Nos. 7-152001 and 7-261126 have a drawback that aberrations (particularly off-axis image point movement error) in the image stabilization state are bad. was there.

The present invention has been made in view of such a situation, and provides a taking lens suitable for close-up photography, which has a camera shake correction function, and in which the aberration in the camera shake correction state is favorably corrected. The purpose is to

[0006]

The present invention for achieving the above object comprises, in order from the object side, a first lens group having a positive refractive power and a second lens group having a positive refractive power, Upon focusing from infinity to a close distance, both the first lens group and the second lens group move to the object side, and the image stabilization group forming at least a part of the second lens group is perpendicular to the optical axis. The camera is characterized by satisfying the following conditional expression (1) by performing camera shake correction by moving the camera in the direction. 0.25 <| βmax | (1) where βmax is the photographing magnification in the closest focus state,

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1, 5, 9 and 13 show the lens arrangement of the first to fourth embodiments of the photographing lens embodying the present invention in the infinity in-focus state. In each drawing, arrows m1 to m3 schematically show movements of the lens groups Gr1 to Gr3 in focusing from infinity to the closest distance.

In the first embodiment (FIG. 1), from the object side,
It comprises a first lens group Gr1 having a positive refractive power and a second lens group Gr2 having a positive refractive power. First lens group G
r1 includes, in order from the object side, a biconvex first lens L1, a positive meniscus second lens L2 having a convex surface facing the object side, and a biconcave third lens L3. Second lens group Gr2
In order from the object side, a diaphragm A, a positive meniscus fourth lens L4 having a concave surface facing the object side, and a positive meniscus fifth lens L5 having a convex surface facing the object side are arranged. This first
In the embodiment, the camera shake is corrected by moving the fifth lens L5, which is a part of the second lens group Gr2, in the direction perpendicular to the optical axis. That is, the fifth lens L5 corresponds to the camera shake correction group.

In the second embodiment (FIG. 5), from the object side,
It comprises a first lens group Gr1 having a positive refractive power and a second lens group Gr2 having a positive refractive power. First lens group G
r1 includes, in order from the object side, a biconvex first lens L1, a positive meniscus second lens L2 having a convex surface facing the object side, and a negative meniscus third lens L3 having a convex surface facing the object side. The second lens group Gr2 includes, in order from the object side, a diaphragm A, and a fourth lens L having a negative meniscus with a concave surface facing the object side.
4th lens L of positive meniscus with concave surface facing the object side
5 are arranged. In the second embodiment, the camera shake is corrected by moving the fourth lens L4 and the fifth lens L5 of the second lens group Gr2 integrally in the direction perpendicular to the optical axis. That is, the fourth lens L4 and the fifth lens L5 of the second lens group Gr2 correspond to the camera shake correction group.

In the third embodiment (FIG. 9), from the object side,
The first lens group Gr1 having positive refractive power, the second lens group Gr2 having positive refractive power, and the third lens group Gr2 having negative refractive power.
The lens group Gr3. The first lens group Gr1 includes, in order from the object side, a biconvex first lens L1, a positive meniscus second lens L2 having a convex surface facing the object side, and a negative meniscus third lens L3 having a convex surface facing the object side. It is arranged. The second lens group Gr2 includes, in order from the object side, a diaphragm A, a negative meniscus fourth lens L4 having a concave surface facing the object side, and a positive meniscus fifth lens L5 having a concave surface facing the object side. The third lens group Gr3 is composed of a cemented lens made up of a biconvex sixth lens L6 and a biconcave seventh lens L7. In the third embodiment, the fourth lens of the second lens group Gr2
The camera shake is corrected by moving the lens L4 and the fifth lens L5 integrally in a direction perpendicular to the optical axis. That is, the fourth lens L4 and the fifth lens L4 of the entire second lens group Gr2.
The lens L5 corresponds to the camera shake correction group.

In the fourth embodiment (FIG. 13), in order from the object side, a first lens group Gr1 having a positive refractive power, a second lens group Gr2 having a positive refractive power, and a third lens group having a negative refractive power. The lens group Gr3. The first lens group Gr1 includes, in order from the object side, a biconvex first lens L1, a positive meniscus second lens L2 having a convex surface facing the object side, and a negative meniscus third lens L3 having a convex surface facing the object side. It will be done. The second lens group Gr2 includes, in order from the object side, a diaphragm A, a cemented lens of a negative meniscus fourth lens L4 having a concave surface facing the object side and a positive meniscus fifth lens L5 having a concave surface facing the object side, and a biconvex lens. The sixth lens L6 is arranged.
The third lens group Gr3 is composed of a negative meniscus seventh lens L7 having a convex surface directed toward the object side. In the fourth embodiment, the cemented lens of the second lens group Gr2 and the sixth lens L6.
By integrally moving and in the direction perpendicular to the optical axis, camera shake is corrected. That is, the cemented lens of the second lens group Gr2 and the sixth lens L6 correspond to the camera shake correction group.

The off-axis image point movement error will be described. In an eccentric optical system, distortion error due to decentering occurs in addition to normal distortion. Therefore, in the image stabilization optical system, when the image point on the axis (center of the screen) is corrected to completely stop, the image point off-axis does not completely stop and the image blur occurs. This image blur is called an off-axis image point movement error. In the present invention, the refractive powers of the first lens group and the second lens group of the photographing optical system are both positive, and the second lens group is the camera shake correction group, so that the off-axis image point movement error can be suppressed to a small value. .

In the first to fourth embodiments, the first lens group Gr1 and the second lens group Gr2 both have positive refracting power, and the first lens group Gr1 and the second lens group Gr1 are used as a focusing method for a close distance. A floating system is adopted in which the distance between the two lens groups Gr2 and the object side is changed while moving the two groups. According to this focusing method, it is possible to more effectively correct the tilt of the image plane and the occurrence of coma that tend to occur during close-up photography, as compared with the overall extension method. Therefore, it is possible to shoot at a considerably large magnification.

Further, as shown in the third and fourth embodiments,
When the third lens group Gr3 having a negative refracting power is provided and the entire system is made up of positive, negative, and negative lens groups, it is possible to more effectively correct the tilt of the image plane and the occurrence of coma during close-up photography. Moreover, in this case, since the refracting power arrangement of the entire system is a telephoto type, the total length can be shortened.

As in the present invention, the positive first
In the taking lens having the lens group and the positive second lens group,
The weight of the lenses of the first lens group is greater than the weight of the lenses of the second lens group and thereafter. Therefore, when a part or all of the first lens group is used as the camera shake correction group, the camera shake drive mechanism for moving the camera shake correction group in the direction perpendicular to the optical axis becomes large, which is not preferable. Therefore, in the present invention, a part or all of the second lens group is used as a camera shake correction group. The first lens is the first lens in the second lens group.
Since the diameter of the lens group is smaller than that of the lens of the lens group, and it is also lighter in weight. Therefore, if a part or all of the second lens group is used as an image stabilization group, a camera shake drive mechanism is provided compared to a case where the first lens group is an image stabilization group. Can be miniaturized.

Further, a positive first lens group in order from the object side,
When the positive second lens group is provided and a part or the whole of the second lens group is used as the camera shake correction group, it is desirable that the diaphragm is arranged in the second lens group. This is because the on-axis light flux and the off-axis light flux are densely gathered in the lens near the diaphragm, so that if the diaphragm is arranged in the second lens group including the camera shake correction group, the diameter of the camera shake correction group can be reduced. As a result, the camera shake drive mechanism can be further downsized. When the diaphragm is arranged in the second lens group, it is not desirable to use the lenses after the third lens group as the camera shake correction group. This is because the lenses from the third lens group onward are greatly separated from the aperture during close-up photography, and therefore the diameter must be increased. If a large-diameter lens is used as the camera shake correction group, the camera shake drive mechanism becomes large as described above.

By the way, in a normal state where the camera shake correction group does not move in the direction perpendicular to the optical axis, where light rays do not pass, in the camera shake correction state where the camera shake correction group is moved in the direction perpendicular to the optical axis I will pass. For this reason, in the camera shake correction state, a light ray that has passed through a portion where the light ray does not pass in the normal state becomes a harmful ray, which may deteriorate the imaging performance. Therefore, it is desirable to provide an aperture (hereinafter, referred to as a fixed aperture) whose position does not change between the normal state and the image stabilization state on the object side or the image side of the image stabilization group or in the image stabilization group. By blocking the harmful rays with this fixed diaphragm, good image forming performance can be obtained even in the camera shake correction state.

Next, conditional expressions which are desirable to be satisfied by the taking lens according to the present invention will be described. The conditional expression (1) represents the proximity capability of the taking lens. When the value goes below the lower limit of the conditional expression (1), the close-up shooting capability becomes insufficient, so that a practical close-up shooting lens cannot be obtained. If the lower limit of conditional expression (1) is set to 0.4, a higher close-up shooting capability can be obtained.

Further, a positive first lens group in order from the object side,
In a taking lens having a positive second lens group and moving both the first lens group and the second lens group toward the object side when focusing from infinity to a close distance, the following conditional expression (2) is satisfied. Is desirable. 0.08 <| f2 / f1 | <1.0 (2) Here, f1 is the focal length of the first lens group, and f2 is the focal length of the second lens group.

When the upper limit of conditional expression (2) is exceeded, the focal length of the first lens group becomes as short as the focal length of the second lens group, and the refractive power of the first lens group becomes too large.
As a result, various aberrations generated in the first lens group become large, and it becomes difficult to correct them with other lens groups.
Therefore, it becomes difficult to obtain good imaging performance from infinity to the closest distance. If the upper limit is 0.7,
Further good imaging performance can be obtained. On the contrary, when the value goes below the lower limit of the conditional expression (2), the refractive power of the first lens group becomes too small. Therefore, even if the focusing is performed by the floating method, it becomes impossible to correct the aberration at the time of close-up photography, especially the tilt of the image plane. When the lower limit is set to 0.13, it is possible to obtain further excellent proximity performance.

Further, it is desirable that the following conditional expression (3) is satisfied. 0.2 <| fb / ft | <4.0 (3) where fb is the focal length of the camera shake correction group, and ft is the focal length of the entire system.

Conditional expression (3) is defined as follows: in a taking lens having a positive first lens group and a positive second lens group, a part or all of the second lens group is a camera shake correction group,
It defines the focal length of the camera shake correction group. If the upper limit of conditional expression (3) is exceeded, the refractive power of the image stabilization group becomes weaker, so the amount of movement of the image point (correction sensitivity) when the image stabilization group is moved by a fixed amount in the direction perpendicular to the optical axis. Becomes smaller. Therefore, the amount of movement of the camera shake correction group for camera shake correction becomes large. By setting the upper limit to 3.0, it is possible to further reduce the movement amount of the image stabilization group during image stabilization. Conversely, conditional expression (3)
Below the lower limit of, the refractive power of the camera shake correction group becomes too large, and the aberration generated in the camera shake correction group in the normal state and the camera shake correction state becomes large. Therefore, it becomes difficult to correct the aberration generated in the camera shake correction group with another lens group. When the lower limit is set to 0.7, various aberrations can be corrected even better in the normal state and the camera shake correction state.

Further, a photographing lens for correcting camera shake by moving the camera shake correction group in a direction perpendicular to the optical axis,
It is desirable to satisfy the following conditional expression (4). 0.4 <MI / MF <2.5 (4) Here, MI: the amount of movement of the camera shake correction group necessary to correct a predetermined amount of camera shake in the infinity in-focus state, MT: The amount of movement of the camera shake correction group necessary to correct a predetermined amount of camera shake in the closest focus state.

When the upper limit of the conditional expression (4) is exceeded or the lower limit of the conditional expression (4) is exceeded, the amount of movement of the image stabilizing group greatly differs between infinity focusing and closest focusing. For this reason,
At any shooting distance between infinity and the closest distance,
When calculating the movement amount of the camera shake correction group, a calculation error becomes large.

Further, in a photographing lens for correcting camera shake by moving the camera shake correction group in a direction perpendicular to the optical axis, the camera shake correction group includes a positive lens and a negative lens, and satisfies the following conditional expression (5). Is desirable. νp> νn (5) where νp is the Abbe number of the positive lens with the smallest Abbe number in the camera shake correction group, and νn is the Abbe number of the negative lens with the largest Abbe number in the camera shake correction group. .

Generally, the image point shifts depending on the wavelength, but when the optical system is asymmetric, the image point shifts due to the difference in wavelength even with the axial light. The phenomenon in which the image point of the on-axis light deviates depending on the wavelength is called axial lateral chromatic aberration. This on-axis lateral chromatic aberration also occurs when the camera shake correction group is moved in the direction perpendicular to the optical axis. The conditional expression (5) represents a condition for suppressing the axial lateral chromatic aberration to be small. When the conditional expression (5) is satisfied, the camera shake correction group is sufficiently color-corrected, so that the axial lateral chromatic aberration can be suppressed small.

Next, an embodiment of the camera shake driving mechanism will be described. FIG. 17 shows a camera shake drive mechanism applied to the second embodiment.

An actuator 2 for driving the holding frame 1 in a direction perpendicular to the optical axis AX is attached to the holding frame 1 of the second lens group Gr2 which is a camera shake correction group. A lens driving circuit 3 is electrically connected to the actuator 2.

A spectral prism 5 is arranged on the image side of the taking lens. The spectral prism 5 is formed by joining two trapezoidal prisms, and the joining surface is subjected to half mirror processing. The half mirror 5a formed by this half mirror processing reflects only a part of a part of the light rays including the optical axis AX in the transmitted light flux of the photographing lens in a direction perpendicular to the optical axis AX, and the other light rays. Make it transparent. The light flux reflected by the half mirror 5 a passes through the biconvex lens 6, is reflected by the small mirror 7, and forms an image on the CCD 8. The output signal of the CCD 8 is output to the image blur detection circuit 4 in time series. The image blur detection circuit 4 detects the amount of image blur by calculating the center of gravity based on the signal from the CCD 8 and outputs the result to the lens drive circuit 3. The lens drive circuit 3 calculates the amount of movement of the camera shake correction group necessary to compensate for the amount of camera shake input from the image blur detection circuit 4, and the actuator 2 moves the camera shake correction group by the calculated amount of movement. To drive. When the actuator 2 is driven, the image blur detection circuit 4 detects the amount of image blur again and feeds it back to the lens drive circuit 3. By repeating this feedback until the image blur amount becomes equal to or less than the predetermined amount, the camera shake is corrected with high accuracy.

By the way, camera shake includes rotational shake caused by the camera rotating around an axis perpendicular to the optical axis and parallel shake caused by parallel movement of the camera in the direction perpendicular to the optical axis. . Image blur in a normal shooting lens is
Many are due to rotational shake. However, in the case of a macro lens having a photographing magnification greater than a few fractions, image blur also occurs due to parallel blur. Known detection systems for detecting the amount of image blur include a detection system for detecting the amount of image blur using an angular velocity sensor and a detection system for reading an image by an image sensor. Among them, the former detection system using the angular velocity sensor cannot detect the parallel shake. For this reason, the latter detection system using an image sensor is desirable for a macro lens in which image blur occurs due to parallel blur.

In the case of a camera in which the taking lens can be exchanged, the detection system may be built in the interchangeable lens or may be arranged on the body side.

[0032]

EXAMPLES Example 1 of the photographing lens according to the present invention will be described below.
~ 4 is shown. However, in each embodiment, f is the focal length of the entire system, ri (i = 1,2,3, ...) is the radius of curvature of the i-th surface counted from the object side, and di (i = 1,2). , 3 ...) indicates the i-th axial upper surface distance counted from the object side, and Ni (i = 1,2,3 ...), νi (i = 1,2,
3 ...) indicates the refractive index and Abbe number of the i-th lens for the d-line counting from the object side.

Further, in the first and second embodiments, the axial upper surface distance d6 between the first lens group Gr1 and the second lens group Gr2 is, in order from the left, the value in the infinity in-focus state and the closest distance in-focus state. Indicates a value. In the closest distance in-focus state of the first embodiment, the object distance is 142.719 mm and the photographing magnification β = −0.5, and in the closest distance in-focus state of the second embodiment, the object distance = 14.
It is 4.505 mm and the photographing magnification β = −0.5. Similarly, in Example 3, the axial upper surface distance d6 between the first lens group Gr1 and the second lens group Gr2, and the second lens group Gr.
The axial upper surface distance d11 between the second lens group Gr3 and the second lens group Gr3 indicates a value in the infinity focused state and a value in the closest distance focused state in order from the left. The closest distance in-focus state of the third embodiment is that the object distance is 143.063 mm and the photographing magnification β is −0.5. In addition, in Example 4, the first lens group Gr1 and the second lens group Gr1
The axial upper surface distance d6 with the lens group Gr2 and the axial upper surface distance d12 with the second lens group Gr2 and the third lens group Gr3 are values in the infinity in-focus state and intermediate distance in-focus state in order from the left. , The value at the closest focusing distance. In addition, in the intermediate-distance focused state of the third embodiment, the object distance = 107.13 mm,
The photographing magnification β = −0.5, the closest distance in-focus state is the object distance = 64.428 mm, and the photographing magnification β = −1.0.

[0034]

[Table 1]

[0035]

[Table 2]

[0036]

[Table 3]

[0037]

[Table 4]

2, 6, 10 and 14 show aberrations in the normal state of Examples 1 to 4, respectively. 2, 6 and 10, the upper part shows the aberration in the infinity in-focus state, and the lower part shows the aberration in the closest distance in-focus state. Further, in FIG. 14, aberrations in the infinity in-focus state, the intermediate distance in-focus state, and the closest distance in-focus state are shown in order from the top. Further, the solid line (d) represents the spherical aberration with respect to the d line, and the broken line (SC) represents the sine condition. Further dashed line
(DM) and solid line (DS) represent astigmatism on the meridional surface and the sagittal surface, respectively.

FIGS. 3, 7, 11, and 15 show meridional lateral aberrations in the infinity in-focus condition of Examples 1 to 4, respectively. In each figure, the upper three stages are lateral aberrations in the image stabilization state when the rotational shake is 0.7 degrees,
The lower two rows show the lateral aberration in the normal state.

FIGS. 4, 8, 12, and 16 show meridional lateral aberrations in the closest distance in-focus state of Examples 1 to 4, respectively. In each figure, the upper three rows show the lateral aberration in the camera shake correction state when the rotational shake is 0.7 degrees, and the lower two rows show the lateral aberration in the normal state.

Table 5 shows values corresponding to the conditional expressions (1) to (5) in Examples 1 to 4. Note that M
I and MF represent values in the camera shake correction state when the rotational shake is 0.7 degrees.

[0042]

[Table 5]

Next, Table 6 shows an example of the lens driving mechanism. In Table 6, ri (i = 1,2,3, ...) is the radius of curvature of the i-th surface counted from the object side, and di (i = 1,2,3 ...) is counted from the object side. Represents the i-th axial upper surface interval, and Ni (i = 1,2,3 ...) represents the refractive index for the d-line of the i-th optical element counted from the object side. The first surface r1 is the most image-side lens surface of the taking lens.

In each of the examples, the surface with the radius of curvature marked with * indicates that it is a surface composed of an aspherical surface, and is defined by the following formula 1 representing the surface shape of the aspherical surface. And

[0045]

[Equation 1]

Here, X: height in a direction perpendicular to the optical axis Y: amount of displacement from the reference surface in the optical axis direction C: paraxial curvature ε: quadric surface parameter.

[0047]

[Table 6]

[0048]

As described above, according to the present invention,
A photographic lens satisfying 0.25 <| βmax |, wherein both the first lens group and the second lens group have positive refracting power,
Focusing is performed by moving the first lens group and the second lens group, and part or all of the second lens group is moved in a direction perpendicular to the optical axis to perform camera shake correction. As a result, it is possible to obtain a sufficient proximity capability and to suppress the off-axis image point movement error to be small.

[Brief description of drawings]

FIG. 1 is a lens configuration diagram of a first embodiment of the present invention.

FIG. 2 is an aberration diagram of Example 1 of the present invention.

FIG. 3 is a meridional lateral aberration diagram in Example 1 of the present invention in an in-focus state at infinity.

FIG. 4 is a meridional lateral aberration diagram in the closest-distance focused state according to the first embodiment of the present invention.

FIG. 5 is a lens configuration diagram of a second embodiment of the present invention.

FIG. 6 is an aberration diagram of Example 2 of the present invention.

FIG. 7 is a meridional lateral aberration diagram in Example 2 of the present invention when focused on an object at infinity.

FIG. 8 is a meridional lateral aberration diagram in the closest-distance focused state according to Example 2 of the present invention.

FIG. 9 is a lens configuration diagram of a third embodiment of the present invention.

FIG. 10 is an aberration diagram of Example 3 of the present invention.

FIG. 11 is a meridional lateral aberration diagram of Example 3 of the present invention in an in-focus state at infinity.

FIG. 12 is a meridional lateral aberration diagram in Example 3 of the present invention in the closest distance focused state.

FIG. 13 is a lens configuration diagram of a fourth embodiment of the present invention.

FIG. 14 is an aberration diagram of Example 4 of the present invention.

FIG. 15 is a meridional lateral aberration diagram in Example 4 of the present invention when focused on an object at infinity.

FIG. 16 is a meridional lateral aberration diagram in a closest-distance focused state according to Example 4 of the present invention.

FIG. 17 is an external view showing the outline of a detection system for detecting the amount of image blur.

[Explanation of symbols]

 Gr1 ・ ・ ・ First lens group Gr2 ・ ・ ・ Second lens group A ・ ・ ・ Aperture

Claims (8)

[Claims] 1. A first lens group having a positive refracting power and a second lens group having a positive refracting power are arranged in order from the object side, and the first lens group is focused upon focusing from infinity to a close distance. Both the lens group and the second lens group are moved to the object side, and the image stabilization is performed by moving the image stabilization group forming at least a part of the second lens group in a direction perpendicular to the optical axis. 0.25 <| βmax | where βmax is a photographing magnification in the closest distance in-focus state, and 2. The photographing lens according to claim 1, comprising the first lens group and the second lens group. 3. The photographic lens according to claim 1, comprising the first lens group, the second lens group, and a third lens group having a negative refractive power. 4. The taking lens according to claim 1, wherein the following conditional expression is satisfied: 0.08 <| f2 / f1 | <1.0 where f1: focal length of the first lens group , F2: focal length of the second lens group. 5. The taking lens according to claim 1, wherein the following conditional expression is satisfied: 0.2 <| fb / ft | <4.0, where fb is the focal length of the camera shake correction group, ft is the focal length of the entire system. 6. The photographing lens according to claim 1, wherein the following conditional expression is satisfied: 0.4 <MI / MF <2.5 where MI: a predetermined amount in an infinity in-focus state. The amount of movement of the camera shake correction group necessary to correct the camera shake of the camera, MT: the amount of movement of the camera shake correction group necessary to correct a predetermined amount of camera shake in the closest distance focus state. 7. The taking lens according to claim 1, wherein the following conditional expression is satisfied: νp> νn, where νp: Abbe number of a positive lens having the smallest Abbe number in the image stabilizing group, νn : Abbe number of the negative lens with the largest Abbe number in the image stabilization group. 8. The photographing lens according to claim 1, wherein the stop is arranged on the object side of the second lens group.