JP5825834B2 - Imaging device - Google Patents

Description

The present invention relates to an imaging apparatus, and more particularly, to an imaging apparatus having a function capable of correcting or adjusting a focus position by a predetermined AF (autofocus) detection method (typically a phase difference detection method).

Conventionally, when using a single-lens reflex camera that focuses using phase difference AF, the position that is recognized as the focus position changes due to the durability of each lens and camera body, and the focus accuracy has improved from the beginning. There was a fall. In the case of a lens, the lens should be driven to the correct in-focus position, but there may be a case where a play due to durability occurs and the lens stop position shifts. In the case of the camera body, the mirror angle changes while the mirror used in the phase difference detection method is being driven, and the way the subject light enters the AF sensor changes to align the position shifted from the correct focus position. There may be a case where the focus position is recognized. In order to solve such a problem, there is known a method of performing an AF correction at the time of photographing with a correction value of a focus position according to the focal length of the lens (see Patent Document 1).

JP 2000-292684 A

The correction value in the above prior art is a value for adjusting to the correct in-focus position in the designated focus adjustment area (AF frame), that is, a value indicating just focus. Depending on the subject, the user may also perform fine adjustment of the focus position of the front pin / rear pin (for example, adjusting the focus position to the front pin or rear pin side with respect to the focus position by phase difference AF). There is. Here, even if the correction value obtained by the adjustment up to such a fine adjustment is seen, it is determined from the value what adjustment has been made in the past, whether it is the correction value for the just-focusing in the designated AF frame, and the like. There was a problem that it was not easy.

The present invention has been made in view of such problems. The purpose is to record the front pin / rear pin information at the appropriate timing for correction and adjustment, and the front pin / rear pin by comparing the correction value and the calibration correction value with the calibration adjustment correction value. It is to provide a technology that makes it possible to confirm the adjustment contents from the information.

In order to achieve the above object, an imaging apparatus of the present invention is an imaging apparatus capable of setting a correction value for adjusting a focus position obtained by a predetermined detection method such as phase difference AF at the time of shooting. It is configured like this. That is, it has an AF correction unit and a display unit, and the AF correction unit is a calibration correction value for correcting the in-focus position obtained by the predetermined detection method and a calibration value for adjusting the calibration correction value. A correction value for calibration adjustment, and when the calibration correction value and the calibration adjustment correction value are set, the display means displays a calibration correction value. The first index and the second index for representing the calibration adjustment correction value are displayed, and the positional relationship information between the first index and the second index is displayed. Alternatively, an AF correction unit and a display unit are provided, and the AF correction unit includes a calibration correction value for correcting the in-focus position obtained by the predetermined detection method and a calibration for adjusting the calibration correction value. A correction value for calibration adjustment, and the display means is configured to display the calibration adjustment correction value when the calibration correction value and the calibration adjustment correction value are set. An index and information indicating a change due to the calibration adjustment correction value represented by the index from the calibration correction value are displayed .

In order to achieve the above object, the AF correction display method of the present invention is an AF correction display method in an imaging apparatus capable of setting a correction value for adjusting a focus position obtained by a predetermined detection method at the time of shooting. And having at least the following steps. Step of setting a correction value of the calibration to correct the focus position obtained by the predetermined detection scheme, the correction value of the calibration adjustment for adjusting the correction value of the calibration, the. Displaying a first index for representing the calibration correction value and a second index for representing the calibration adjustment correction value, the first index and the second index; Displaying information on the positional relationship of . Alternatively, a first step of setting a calibration correction value for correcting the in-focus position obtained by the predetermined detection method and a calibration adjustment correction value for adjusting the calibration correction value. A second step of displaying an index for representing the calibration adjustment correction value and information indicating a change from the calibration correction value due to the calibration adjustment correction value represented by the index;

According to the present invention, even if fine adjustment of the in-focus position of the front pin / rear pin is performed, for example, the calibration correction value and the calibration adjustment correction value are compared at an appropriate timing for correction or adjustment. Record the information about the front / rear pins. Therefore, it is possible to confirm the adjustment contents from the front pin / rear pin information.

It is a vertical sectional view showing an internal structure of a lens interchangeable single-lens reflex digital camera at the time of viewfinder shooting and live view shooting. 6 is a flowchart for explaining AF correction processing according to the first embodiment. FIG. 4 is a diagram illustrating an example of an AF frame setting GUI; FIG. 5 is a diagram illustrating a calibration process flowchart and an example of a correction value designation GUI according to the first embodiment. 6 is a flowchart for explaining calibration adjustment processing and calibration integration processing in the first embodiment. 6 is a flowchart for describing imaging processing using correction values in the first embodiment. FIG. 10 is a diagram illustrating an example of a correction value display GUI according to the second and third embodiments.

A feature of the present invention is that it is possible to set a correction value for adjusting the in-focus position obtained by a predetermined detection method, and at least the in-focus position adjusted with the correction value and the correction value for the reference in-focus position It is to be able to hold and reproduce the positional relationship information. Based on such a concept, the image pickup apparatus and the AF correction display method of the present invention have the basic configuration as described in the means for solving the above-described problems. Here, the correction value is the difference between the information on the in-focus position obtained automatically or semi-automatically (see description below) by another detection method and the information on the in-focus position obtained by the predetermined detection method. It is set using or is set manually. The information held so that it can be reproduced includes at least the latest correction value and the positional relationship information of the in-focus position adjusted with the latest correction value with respect to the reference in-focus position.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[Embodiment 1]
A digital single-lens reflex camera system with interchangeable lenses will be described as Embodiment 1 of the present invention. FIG. 1A and FIG. 1B are schematic cross-sectional views of a camera that is an imaging apparatus of the present embodiment. The imaging optical system (10) housed in the lens body (1) is composed of one or a plurality of lens groups, and the focal length (zoom position) and the focus position (focus) are moved by moving all or part of them. (Adjustment state) can be changed. The lens driving unit (11) is a driving unit that adjusts the focus adjustment state by moving all or part of the lens. The lens state detection unit (12) is a detection unit that detects the focal length and the focus position of the imaging optical system (10). The lens control means (13) is a control means for controlling the entire lens body (1) including the lens storage means (14) constituted by a ROM or the like. The contact (15) is a contact provided in the lens main body (1) and the camera main body (2), and when they are attached to each other, various information is communicated and power is supplied through the contact (15). .

The main mirror (20) is composed of a half mirror and can be rotated according to the operating state of the camera. When the subject is observed with the viewfinder, as shown in FIG. The light beam from the lens body (1) is bent and guided to a finder optical system described later. During shooting or live view, as shown in FIG. 1B, the light beam from the lens main body (1) is retracted from the shooting optical path and guided to an image sensor (24) described later. The sub mirror (21) rotates together with the main mirror (20), and when the main mirror (20) is obliquely installed on the photographing optical path, the light beam transmitted through the main mirror (20) is transmitted as shown in FIG. It is bent and guided to an AF sensor (22) described later. At the time of shooting or live view, as shown in FIG. 1 (b), it rotates with the main mirror (20) and retracts from the shooting optical path. The AF sensor (22) includes a secondary imaging lens, an area sensor composed of a plurality of CCDs or CMOSs, and the like, and performs focus detection by a phase difference method that is a known method.

The shutter (23) is used to control the incidence of a light beam from the lens body (1) to an image sensor (24) described later. Usually, the shutter (23) is closed as shown in FIG. At the time of viewing, it is in an open state as shown in FIG. The image sensor (24) is composed of an image sensor and its peripheral circuits. An image sensor CCD, a CMOS sensor, or the like is used for the image sensor (24), and the subject image formed by the image pickup optical system (10) is converted into an electric signal. The focus plate (30) is disposed on the primary imaging surface of the lens body (1), a condensing lens is provided on the incident surface, and a subject image (finder image) is formed on the exit surface. The pentaprism (31) changes the finder optical path, and corrects the subject image formed on the exit surface of the focusing screen (30) to an erect image. The eyepiece (32) is configured so that the diopter can be adjusted according to the eyes when the user looks through the viewfinder. An optical system including the focus plate (30), the pentaprism (31), and the eyepiece lens (32) is referred to as a viewfinder optical system. The AE sensor (33) is composed of a photodiode corresponding to each of the regions in the multi-divided imaging region, and measures the luminance of the subject image formed on the exit surface of the focus plate (30).

The mechanical control means (40) is a microcomputer (central processing unit; MPU) that controls the camera unit and the entire camera. Lens control such as AF correction, lens driving, and aperture driving is also performed on the lens body (1). The digital control means (41) is a memory controller (ICU) that performs various controls of image data. The digital control means (41) can use a contrast type focus detection means for detecting the contrast of an image photographed by the image sensor (24) and determining the in-focus position. The camera storage means (42) stores various programs for controlling the AF correction system, settings, correction data related to AF correction, and the like. The various programs include a lens information reading unit that reads lens information from the lens body (1), a calibration information reading unit that reads a correction value for AF correction, a lens correction information display unit, and a front pin / rear position from a correction value at the time of calibration adjustment. It includes a calibration correction value comparison means for determining a pin.

The liquid crystal monitor (43) displays captured images and various types of shooting information. The recording medium (50) records image data such as a memory card or a hard disk. This recording medium (50) is detachable from the camera body. Although not shown in FIGS. 1A and 1B, a SET button and a cancel button are provided. When the SET button is displayed on the liquid crystal monitor 43, an operation such as determination or selection can be performed by pressing the SET button. When the cancel button is displayed on the liquid crystal monitor (43), the user can perform operations such as returning to the previous state and ending a specific mode by pressing the cancel button.

A camera system with interchangeable lenses having a semi-automatic or fully automatic phase difference AF correction function (hereinafter also referred to as calibration) using a contrast detection method in the present embodiment will be described. The digital control means (41) is provided with calculation means for calculating a correction value based on the difference between the output by the contrast detection method and the output of the mechanical control means (40) for controlling the output from the AF sensor (22). Yes. The calculation means forms part of an AF correction means for setting a correction value. The difference amount calculated by the calculation means is stored in the camera storage means (42) as correction value information. The camera system according to the present embodiment is configured to be able to set a calibration mode for calculating and storing the correction value information described above.

An example of calibration processing will be described with reference to the flowchart shown in FIG. This process is performed by the mechanical control means (40) executing the calibration program stored in the camera storage means (42). In step S102, lens information is acquired through communication with the lens body (1), and the process proceeds to step S104. Here, the lens information includes a lens ID, a lens name, and a serial number. Here, the lens information is acquired by communication with the lens main body (1). However, information previously communicated and stored in the camera storage means (42) may be used. In step S104, calibration information including a correction value corresponding to the lens information acquired in step S102 is acquired from the camera storage means (41), and the process proceeds to step S106. Here, when there is no calibration information corresponding to the lens information, default calibration information is used. In step S106, the user selects an AF frame, and the process proceeds to step S108. A screen related to AF frame selection will be described with reference to FIG. The screen (200) related to AF frame selection is composed of a plurality of AF frames (202) and the selected AF frame (204). The selected AF frame is displayed so as to be easily distinguished from the plurality of AF frames (202), and can be moved using an operation member (not shown). The user uses this screen to select an AF frame.

Returning to FIG. 2, when the AF frame is selected in step S106, the telephoto end is selected in step S108, and the process proceeds to step S110. A screen relating to the selection of the telephoto end will be described with reference to FIG. The screen (300) relating to the selection of the telephoto end includes an area (302) for displaying a message. A message for moving the lens to the telephoto end is displayed in this area to prompt the user to operate.

Returning to FIG. 2, when the telephoto end is selected in step S108, calibration is performed in step S110, and the process proceeds to step S116. In step S116, calibration adjustment is performed, and the process proceeds to step S120. The flow of calibration adjustment will be described later. In step S120, the calibration correction value in step S110 is compared with the calibration correction value in step S116. Then, it is determined whether the correction value in the calibration adjustment is the front pin or the rear pin with respect to the calibration correction value (the correction value for realizing the reference in-focus position in the present embodiment), and the process proceeds to step S122. move on. In step S122, the calibration information is stored, and the process proceeds to step S124. The calibration information includes the lens ID, lens name, serial number, ID indicating the telephoto end, the AF frame position at the telephoto end, the correction value at the telephoto end, and the front / rear pin information at the telephoto end. including. As described above, in this embodiment, the positional relationship is determined from the correction value at the time of calibration correction in which the correction value is calculated and set by the contrast detection method and the correction value after calibration adjustment in which the correction value is manually set. Calibration correction value comparison means.

The calibration flow in step S110 in FIG. 2 will be described with reference to FIG. Since it is necessary to determine the subject before entering this flow, calibration is started when the subject is determined. In step S202 of FIG. 4A, the subject is focused by the contrast detection method (TVAF), and the process proceeds to step S206. In step S206, the mechanical control means (40) sends a signal to the lens control means (13), moves the focus lens to a predetermined position through the lens driving means (11), and proceeds to step S208. In step S208, the digital control means (41) detects the contrast of the image signal obtained from the image sensor (24), and the process proceeds to step S210. In step S210, until the predetermined number N is reached, the minute movement of the focus lens in S206 and the contrast detection in S208 are repeated. When the predetermined number of times is reached, the process proceeds to step S212. If the predetermined number of times has not been reached, the process proceeds to S206. In step S212, the digital control means (41) determines that the focus position from which the image signal with the highest contrast among the N contrast detection results is obtained is the in-focus position, and sends a signal to the mechanical control means (40). The process proceeds to step S214. The mechanical control means (40) obtains position information from the lens state detection means (12) at that time through the lens control means (13), and creates in-focus position information. Here, the user can focus on the live view by turning the focus ring of the lens, and can determine a high-contrast focus position semi-automatically with manual operation.

In step S214, the focus lens is moved through the lens driving means (11) to the focus position with the highest contrast obtained in step S212, and the process proceeds to step S216. In step S216, the mechanical control means (13) causes the AF sensor (22) to perform focus detection by phase difference AF. Then, the detection result at that time, that is, the value obtained by converting the defocus amount (defocus amount) into the drive amount in the in-focus direction of the focus lens is added to the focus position information from the lens state detection means (12) to adjust the focus position information. The focal position information is created, and the process proceeds to step S220. In step S220, the in-focus position correction value is calculated by the digital control means (41), and the process proceeds to step S222. The in-focus position correction value is in-focus position information obtained from the detection result by the AF sensor (22) and the in-focus position information when the mechanical control means (40) makes the in-focus determination by the digital control means (41). And the difference. In step S222, the focus position correction value calculated by the digital control means (41) is stored in the camera storage means (42), and the calibration process is terminated. Thus, in this embodiment, the predetermined detection method is a phase difference detection method, and the AF correction unit includes a unit that can calculate and set the correction value using a contrast detection method.

The calibration adjustment flow in step S116 in FIG. 2 will be described with reference to FIGS. 4B and 5A. First, a screen relating to calibration adjustment will be described with reference to FIG. The calibration adjustment screen (400) includes a mode (401), a scale (402), an index (404), a SET button (406), and a cancel button (408). The mode (401) displays the current mode (mode for specifying the correction value). On the scale (402), a scale for representing the correction value is displayed. This scale is “scale display” in which the correction amount represented by one scale changes depending on the open F value of the lens. In the index (404), an index for representing the correction value is displayed. The correction value is represented by where this index is on the scale. In the initial state, it is displayed at a position of ± 0. The SET button (406) is a button for confirming the setting. The cancel button is a button for canceling the setting.

Next, a calibration adjustment flow will be described with reference to FIG. In step S252, a correction value is input using an operation member (not shown), and the process proceeds to step S254. The operation member forms part of an AF correction unit configured so that the user can manually set the correction value. In step S254, shooting is performed, and the process proceeds to step S256. The photographing process is the same as the photographing in step S314 in FIG. 6 described later, and is photographing performed by driving the focus lens based on the correction value input using the operation member. In step S256, the captured image is displayed on the screen, and the process proceeds to step S258. In step S258, when the cancel button is pressed (for example, when the user wants to readjust the image while viewing the captured image), the process proceeds to step S252. If the cancel button has not been pressed, the process proceeds to step S260. If the SET button is pressed in step S260, the process proceeds to step S262. If the SET button has not been pressed, the process proceeds to step S258. In step S262, the correction value set by the calibration adjustment (which may be zero) is added to the focus position correction value before the calibration adjustment, and the process proceeds to step S264. In step S264, the in-focus position correction value calculated in step S262 is stored in the camera storage means (42), and the process ends. Thus, in the present embodiment, the step of setting the correction value includes the following steps. A step of obtaining in-focus position information by a contrast method different from the phase difference method, a step of obtaining information on the in-focus position detected by the phase difference method at the in-focus position acquired by the contrast method, The method includes a step of obtaining a correction value based on the difference in focus position information by the detection method. Still further, there is a step of manually adjusting the correction value.

Returning to FIG. 2, when the calibration information is stored in step S122, the user selects the wide-angle end in step S124, and the process proceeds to step S126. A screen relating to the selection of the wide-angle end will be described with reference to FIG. The screen (300) relating to the selection of the wide-angle end includes an area (304) for displaying a message. A message for moving the lens to the wide-angle end is displayed in this area to prompt the user to operate. When the wide-angle end is selected in step S124 in FIG. 2, calibration is performed in step S126, and the process proceeds to step S132. In step S132, calibration adjustment is performed, and the process proceeds to step S136. In step S136, the calibration correction value in step S126 is compared with the correction value in calibration adjustment in step S132. Then, it is determined whether the correction value in the calibration adjustment is the front pin or the rear pin with respect to the calibration correction value, and the process proceeds to step S138. In step S138, calibration information is stored, and the process proceeds to step S140. The calibration information here includes the lens ID, the lens name, the serial number, the ID indicating the wide-angle end, the AF frame position at the wide-angle end, the correction value at the wide-angle end, and the front pin / Includes back pin information. As described above, in this embodiment, in the step of holding the calibration information, the focus position by the correction value after the manual adjustment with respect to the correction value, the correction value after the adjustment, and the focus position adjusted by the correction value. The information of the positional relationship is held so that it can be reproduced.

In step S140, the calibration information is integrated, and the process ends. The integration of calibration is a process of connecting the adjusted calibration information and imaging information and validating the information by the calibration process. A calibration integration flow will be described with reference to FIG. In step S414, the calibration information stored in step S122 is validated, and the process proceeds to step S416. With the validation, it is possible to perform imaging using the correction values acquired in the calibrations in steps S110 and S116 in subsequent imaging. In step S416, the calibration information stored in step S138 is validated, and the process ends. Here, the meaning of “validation” is as follows. In this embodiment, since calibration correction values are calculated at a plurality of zoom positions, if there is an interruption such as abnormal termination in the middle of the sequence, these correction values may be incomplete. Therefore, when all information is gathered, it is necessary to set a flag as valid information, and “validation” processing is performed.

Next, an imaging flow using the correction values acquired by the calibration and calibration adjustment will be described with reference to FIG. In step S302, the release button is pressed halfway (1st release), and the process proceeds to step S304. In step S304, focus detection is performed by the phase difference method using the AF sensor (22), and the process proceeds to step S306. In step S306, the lens state detection means (12) detects lens information such as the focal length and focus position of the lens, and the process proceeds to step S308. In step S308, from the focus detection result of the AF sensor (22), a correction value specific to each imaging lens and correction value information corresponding to the focal length created by the calibration are extracted from the camera storage means (42). Then, the focus position information is corrected using this, and the process proceeds to step S310. Here, the correction of the in-focus position information is performed by, for example, calculating by a linear interpolation method based on the correction value information at the telephoto end and the wide-angle end. In step S310, the lens is driven by the lens driving means (11) based on the corrected focus position information, the focusing operation is completed, and the process proceeds to step S312. In step S312, the release button is fully pressed (2nd release), and the process proceeds to step S314. In step S314, shooting is performed, and the process ends.

In the present embodiment, the calibration information is stored separately for the telephoto end and the wide-angle end, but the calibration information for the telephoto end and the wide-angle end may be stored together. The calibration information in this case includes the lens ID, lens name, serial number, ID indicating the telephoto end, the AF frame position at the telephoto end, the correction value at the telephoto end, the front pin / rear pin information, , An ID indicating the wide angle end, an AF frame position at the wide angle end, a correction value at the wide angle end, and front / rear pin information.

As described above, the information on the front pin / rear pin can be reproduced in the calibration as described above, so that even if the focus position of the front pin / rear pin is finely adjusted, the front pin / rear pin is adjusted. It becomes possible to confirm the adjustment contents from the information. Furthermore, it becomes possible to improve the user's processing efficiency at the time of calibration readjustment.

In the present embodiment, the AF correction unit is configured to be able to set correction values at the telephoto end and the wide-angle end. However, the focal length for obtaining the correction value can be selected by the user's judgment from the total focal length of the lens. It can also be configured as follows. Then, the correction value at each focal length can be displayed in a list by the display means. When calculating and setting the correction value of the phase difference AF using the contrast detection method, a contrast detection method based on information on the imaging surface of the image sensor can be used, but the AE sensor (33) for measuring the luminance of the subject image can be used. A contrast detection method using information can also be used. Further, the focal length for setting the correction value in the AF correction means can be configured so that the focal length for setting the correction value can be selected and presented and the focal length for actually setting the correction value can be selected. .

[Embodiment 2]
In the second embodiment, a mechanism for displaying the correction value adjusted in the first embodiment will be specifically described. A screen related to the display of correction values by adjustment will be described with reference to FIG. The correction correction display screen (500) includes a title (501), a scale (502), an index (503), (504), (505), (506), correction comparison information (507), and correction comparison information ( 508) and a cancel button (509). The indices (503), (504), (505), and (506) are drawn in the same way, but are actually distinguishable from each other by color or the like. In the title (501), a screen title such as correction value display is displayed. On the scale (502), a scale for representing the correction value is displayed. This scale is “scale display” in which the correction amount represented by one scale changes depending on the open F value of the lens. In the index (503), an index for indicating the correction value of the telephoto end calibration is displayed. The correction value is represented by where this index is on the scale. In the initial state, it is displayed at a position of ± 0. In the index (504), an index for representing a correction value for calibration adjustment at the telephoto end is displayed. The correction value is represented by where this index is on the scale. In the initial state, it is displayed at a position of ± 0. In the index (505), an index for representing the correction value of the calibration at the wide angle end is displayed. The correction value is represented by where this index is on the scale. In the initial state, it is displayed at a position of ± 0. In the index (506), an index for representing a correction value for calibration adjustment at the wide-angle end is displayed. The correction value is represented by where this index is on the scale. In the initial state, it is displayed at a position of ± 0. In the correction comparison information (507), front pin / rear pin information obtained by comparing the calibration correction value at the telephoto end and the calibration adjustment correction value is displayed. In the initial state, ± 0 is displayed. In this figure, since the correction value for calibration adjustment is set to the front pin for the calibration correction value at the telephoto end, such display is performed. In the correction comparison information (508), the front pin / rear pin information is displayed by comparing the calibration correction value at the wide-angle end and the calibration adjustment correction value. In the initial state, ± 0 is displayed. In this figure, since the correction value for calibration adjustment is set to the rear pin with respect to the calibration correction value at the wide-angle end, such display is performed. A cancel button (509) is a button for canceling the screen display.

In the present embodiment, as described above, an image when correction or adjustment is performed is read and displayed. As a result, even if fine adjustment of the in-focus position of the front pin / rear pin is performed, the adjustment contents can be obtained from the correction value and the front / rear pin information obtained by comparing the calibration correction value and the calibration adjustment correction value. It becomes possible to confirm. Furthermore, it becomes possible to improve the user's processing efficiency at the time of readjustment.

[Embodiment 3]
In the third embodiment, the adjusted correction value is displayed in a manner different from that in the second embodiment. The mechanism will be specifically described. A screen related to the display of correction values by adjustment will be described with reference to FIG. In the second embodiment, the calibration correction value and the calibration adjustment correction value at the telephoto end are displayed as indices of the correction value at the telephoto end. Only the index (504) may be displayed. Similarly, only the index (506) serving as the calibration adjustment correction value may be displayed as the index of the correction value at the wide-angle end. In the third embodiment, such a display is used.

In the second embodiment, the correction / comparison information (507) displays the front / rear pin information based on the comparison between the calibration correction value at the telephoto end and the calibration adjustment correction value. On the other hand, in the third embodiment, since only one index is displayed, a numerical value (in this case, -3) is displayed in order to make it easy to understand how much the front pin / rear pin setting is made. Similarly, since only one index is displayed in the correction comparison information (508), a numerical value (in this case, +2) is displayed in order to make it easy to understand how much the front pin / rear pin setting is made.

In the present embodiment, as described above, an image when correction or adjustment is performed is read and displayed. Thereby, the same effect as Embodiment 2 can be produced.

Note that the processing of the above-described embodiment may provide a system or apparatus with a storage medium that records software program codes that embody each function. The functions of the above-described embodiments can be realized by the computer (or CPU or MPU) of the system or apparatus reading out and executing the program code stored in the storage medium. In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention. As a storage medium for supplying such a program code, for example, a floppy (registered trademark) disk, a hard disk, an optical disk, a magneto-optical disk, or the like can be used. Alternatively, a CD-ROM, CD-R, magnetic tape, nonvolatile memory card, ROM, or the like can be used. The functions of the above-described embodiments are not only realized by executing the program code read by the computer. This includes the case where the OS (operating system) running on the computer performs part or all of the actual processing based on the instruction of the program code, and the functions of the above-described embodiments are realized by the processing. ing. Further, the program code read from the storage medium may be written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. Thereafter, the CPU of the function expansion board or function expansion unit performs part or all of the actual processing based on the instruction of the program code, and the functions of the above-described embodiments are realized by the processing. It is a waste.

As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary.

DESCRIPTION OF SYMBOLS 1 ... Lens body, 42 ... Lens information reading means, 42 ... Calibration information reading means, 42 ... Calibration correction value comparison means, 43 ... Display means

Claims (22)

An imaging device capable of setting a correction value for adjusting a focus position obtained by a predetermined detection method at the time of shooting ,
A F correction means and display means ,
The AF correction unit can set a calibration correction value for correcting the in-focus position obtained by the predetermined detection method and a calibration adjustment correction value for adjusting the calibration correction value. ,
When the calibration correction value and the calibration adjustment correction value are set, the display means represents a first index for representing the calibration correction value and the calibration adjustment correction value. And a second index for displaying the positional relationship between the first index and the second index . The AF correction means can set the calibration correction value and the calibration adjustment correction value at the telephoto end side focal length and the wide angle end side focal length, respectively.
The display means displays the information on the positional relationship by displaying the first index and the second index for the focal length on the telephoto end side and the focal length on the wide-angle end side, respectively. The imaging device according to claim 1. Lens information reading means for reading lens information of the interchangeable lens body;
Calibration information reading means for reading the calibration correction value corresponding to the lens information, the calibration adjustment correction value , and the positional relationship information;
Have
The display means, the lens information, the correction value of the correction value and the calibration adjustment of the calibration corresponding to the lens information, and claim 1 or, wherein the benzalkonium display information of the positional relationship 2. The imaging device according to 2 . The AF correction means, the user is imaging apparatus according to any one of claims 1 to 3, characterized in that it is configured to be manually set the correction value of the calibration adjustment. The predetermined detection method is a phase difference detection method,
The AF correction means calculates a correction value of the calibration using a contrast detection method, an imaging apparatus according to any one of claims 1, characterized in that it is configured to set 4 . The position from the correction value at the time of calibration correction that calculates and sets the correction value of the calibration using the contrast detection method and the correction value after calibration adjustment that sets the correction value of the calibration adjustment manually. 6. The imaging apparatus according to claim 5 , further comprising calibration correction value comparison means for determining the relationship. 2. The AF correction unit is configured to select a focal length for obtaining the calibration correction value and the calibration adjustment correction value from the total focal length of the lens. The imaging device according to any one of 6 . An AF correction display method in an imaging apparatus capable of setting a correction value for adjusting a focus position obtained by a predetermined detection method at the time of shooting,
A correction value of the calibration to correct the focus position obtained by the predetermined detection method, a first step of setting a correction value of the calibration adjustment for adjusting the correction value of the calibration,
Displaying a first index for representing the calibration correction value and a second index for representing the calibration adjustment correction value, the first index and the second index; A second step of displaying the positional relationship information ;
An AF correction display method characterized by comprising: In the first step, the calibration correction value and the calibration adjustment correction value are respectively set at the telephoto end side focal length and the wide angle end side focal length;
In the second step, for the focal length at the telephoto end side and the focal length at the wide angle end side, the first index and the second index are displayed, respectively, and the positional relationship information is displayed. The AF correction display method according to claim 8, wherein the display is an AF correction display method. The first step includes
Obtaining in-focus position information by a detection method different from the predetermined detection method;
Obtaining information on the in-focus position detected by the predetermined detection method at the in-focus position acquired by the another detection method;
Calculating a calibration correction value based on information on the in-focus position by the different detection method and information on the in-focus position by the predetermined detection method;
10. The AF correction display method according to claim 8 or 9 , characterized by comprising: In the first step, AF correction display method according to claim 8 in any one of 10, wherein the benzalkonium adjust the correction value of the calibration adjusted manually. An imaging device capable of setting a correction value for adjusting a focus position obtained by a predetermined detection method at the time of shooting,
AF correction means and display means,
The AF correction unit can set a calibration correction value for correcting the in-focus position obtained by the predetermined detection method and a calibration adjustment correction value for adjusting the calibration correction value. ,
When the correction value for the calibration and the correction value for the calibration adjustment are set, the display means displays an index for indicating the correction value for the calibration adjustment and the index from the correction value for the calibration. An image pickup apparatus that displays information indicating a change due to a calibration adjustment correction value. The AF correction means can set the calibration correction value and the calibration adjustment correction value at the telephoto end side focal length and the wide angle end side focal length, respectively.
13. The imaging apparatus according to claim 12, wherein the display unit displays the index and the information for the focal length on the telephoto end side and the focal length on the wide angle end side, respectively. Lens information reading means for reading lens information of the interchangeable lens body;
Calibration information reading means for reading the calibration correction value and the calibration adjustment correction value corresponding to the lens information, and the information;
Have
The imaging device according to claim 12 or 13, wherein the display unit displays the lens information, the correction value of the calibration adjustment corresponding to the lens information, and the information. The imaging apparatus according to claim 12, wherein the AF correction unit is configured so that a user can manually set a correction value for the calibration adjustment. The predetermined detection method is a phase difference detection method,
The imaging apparatus according to claim 12, wherein the AF correction unit is configured to calculate and set the correction value of the calibration using a contrast detection method. . The information from the correction value at the time of calibration correction that calculates and sets the correction value of the calibration using the contrast detection method and the correction value after calibration adjustment that sets the correction value of the calibration adjustment manually. The imaging apparatus according to claim 16, further comprising calibration correction value comparison means for determining The AF correction unit is configured to be able to select a focal length for obtaining the calibration correction value and the calibration adjustment correction value from the total focal length of the lens. The imaging apparatus according to any one of 17. An AF correction display method in an imaging apparatus capable of setting a correction value for adjusting a focus position obtained by a predetermined detection method at the time of shooting,
A first step of setting a calibration correction value for correcting the in-focus position obtained by the predetermined detection method and a calibration adjustment correction value for adjusting the calibration correction value;
A second step of displaying an index for representing the calibration adjustment correction value and information indicating a change from the calibration correction value according to the calibration adjustment correction value represented by the index;
An AF correction display method characterized by comprising: In the first step, the calibration correction value and the calibration adjustment correction value are respectively set at the telephoto end side focal length and the wide angle end side focal length;
20. The AF correction display method according to claim 19, wherein, in the second step, the index and the information are displayed for the focal length on the telephoto end side and the focal length on the wide-angle end side, respectively. The first step includes
Obtaining in-focus position information by a detection method different from the predetermined detection method;
Obtaining information on the in-focus position detected by the predetermined detection method at the in-focus position acquired by the another detection method;
Calculating a calibration correction value based on information on the in-focus position by the different detection method and information on the in-focus position by the predetermined detection method;
21. The AF correction display method according to claim 19 or 20, characterized by comprising: The AF correction display method according to any one of claims 19 to 21, wherein in the first step, a correction value of the calibration adjustment is manually adjusted.