JP6095351B2 - Imaging device, control method thereof, and control program - Google Patents

Description

  The present invention relates to an imaging apparatus, a control method thereof, and a control program, and more particularly to a control technique for an imaging element provided in the imaging apparatus.

  In recent years, digital cameras including an image sensor such as a CCD (Charge Coupled Device) are widely used as an image pickup apparatus. And when reading out an image signal from an image sensor, there is an imaging device provided with a plurality of imaging drive modes with different numbers of readout lines.

  On the other hand, the imaging apparatus displays a through image on a display unit such as an LCD, and performs an imaging preparation operation such as autofocus processing (hereinafter referred to as AF processing) in response to half-pressing of the shutter button (hereinafter referred to as SW1 processing). ing. The imaging apparatus performs an imaging operation from main imaging to image recording in response to full pressing of the shutter button (hereinafter referred to as SW2 processing). At this time, as the AF process, for example, a process is used in which the lens position where the high frequency component of the luminance signal obtained from the image sensor is maximized as a result of imaging is set to the in-focus position.

  Further, by switching the imaging drive mode before and after the AF process, the number of lines for reading the image signal during the AF process and the period during which the SW1 process is held until the SW2 process is performed (hereinafter referred to as SW1 holding process). There is a method to change. In the SW1 holding process, driving with a large number of lines with good appearance of the through image is used so that the user can easily adjust the shooting angle of view.

  For example, a method for changing the number of lines of an image signal to be read according to the brightness of a subject is known for controlling the image sensor during AF processing. Here, the exposure time of the image sensor is reduced to a short time. Thus, even when shooting a low-luminance subject, the AF accuracy is improved and the so-called release time lag from the shutter button operation to shooting is shortened (see Patent Document 1).

JP 2005-20473 A

  However, in Patent Document 1, if the same imaging drive mode is used during the AF process and during the SW1 holding process, when the number of lines is small, the appearance of the through image is deteriorated and it is difficult to adjust the shooting angle of view. .

  On the other hand, if different imaging drive modes are used during the AF process and during the SW1 holding process, the release time lag becomes longer by the time required to change the imaging drive mode.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an imaging apparatus, a control method thereof, and a control program capable of easily adjusting the shooting angle of view and reducing the release time lag.

In order to achieve the above object, an imaging device according to the present invention includes an imaging device that photoelectrically converts an optical image formed through an optical system and outputs an image signal, and a plurality of imaging devices when driving the imaging device. One of the drive modes as a selected imaging drive mode, a drive control means for driving the image sensor in accordance with the selected imaging drive mode, and after adjustment by adjusting a shooting setting that is a setting relating to the shooting at the time of shooting An adjusting unit for obtaining shooting settings, a shooting unit for shooting according to the adjusted shooting settings, and the adjusted shooting until the shooting by the shooting unit is performed after the adjustment of the shooting settings by the adjusting unit is completed. and a photographing setting holding means for holding the setting, the drive control unit, an instruction for adjustment of the photographing setting is performed to select the first image pickup driving mode, indication of adjustment of the photographing setting is performed Thereafter, when the shooting instruction is given after the adjustment of the shooting setting by the adjusting unit is completed, the first imaging driving mode is switched to the second imaging driving mode, and the shooting setting is adjusted by the adjusting unit. If there is an instruction to shoot before completion, the mode is switched to a third imaging driving mode different from the first imaging driving mode and the second imaging driving mode, and the first imaging driving mode and the second imaging driving mode are switched. The imaging drive mode is characterized in that at least the number of readout lines or the frame rate in the imaging device is different.

A control method according to the present invention is a control method for an image pickup apparatus having an image pickup device that photoelectrically converts an optical image formed through an optical system and outputs an image signal. A drive control step for driving one of the imaging drive modes as a selected imaging drive mode according to the selected imaging drive mode, and adjusting a shooting setting that is a setting related to the shooting at the time of shooting. An adjustment step for obtaining a post-shooting setting, a shooting step for shooting according to the post-adjustment shooting setting, and after the adjustment until the shooting by the shooting step is performed after the adjustment of the shooting setting by the adjustment step is completed. and a photographing setting holding step of holding the shooting, in the driving control step, selecting the photographed first image pickup driving mode when an instruction is made for adjustment of settings When the shooting instruction is issued after the shooting setting adjustment is completed after the shooting setting adjustment is completed, the first imaging drive mode is switched to the second imaging drive mode. When there is an instruction for shooting before the adjustment of the shooting setting by the switching and the adjusting step is completed, the mode is switched to a third imaging driving mode different from the first imaging driving mode and the second imaging driving mode, The first imaging driving mode and the second imaging driving mode are characterized in that at least the number of readout lines or the frame rate in the imaging element is different.

A control program according to the present invention is a control program used in an image pickup apparatus having an image pickup device that photoelectrically converts an optical image formed through an optical system and outputs an image signal. When driving the image pickup device, one of a plurality of image pickup drive modes as a selected image pickup drive mode, a drive control step for driving the image pickup device in accordance with the selected image pickup drive mode, and at the time of shooting, An adjustment step of adjusting the shooting setting as a setting to obtain an adjusted shooting setting, a shooting step of shooting according to the adjusted shooting setting, and after the adjustment of the shooting setting by the adjustment step is completed, the shooting until photographing by step is performed to execute an imaging setting holding step of holding the adjusted imaging setting, in the driving control step, When an instruction for adjusting the shooting setting is made, the first imaging drive mode is selected, and after the instruction for adjusting the shooting setting is given, the adjustment of the shooting setting in the adjustment step is completed, and then the shooting is performed. When there is an instruction, the first imaging driving mode is switched from the first imaging driving mode to the second imaging driving mode, and when the imaging instruction is given before the adjustment of the imaging setting by the adjustment step is completed, the first imaging driving is performed. Mode and a third imaging drive mode different from the second imaging drive mode, and the first imaging drive mode and the second imaging drive mode differ in at least the number of readout lines or the frame rate in the imaging device. It is characterized by that.

  According to the present invention, it is possible to easily adjust the shooting angle of view and reduce the release time lag.

It is a block diagram which shows the structure about an example of the imaging device by embodiment of this invention. 3 is a flowchart for explaining still image shooting processing in the imaging apparatus shown in FIG. 1. FIG. 2 is a diagram illustrating a relationship between the number of readout lines and a frame rate for each imaging drive mode of the imaging device illustrated in FIG. 1.

  Hereinafter, an example of an imaging apparatus according to an embodiment of the present invention will be described with reference to the drawings. Here, a so-called digital camera (hereinafter simply referred to as a camera) will be described as an example of the imaging apparatus according to the embodiment of the present invention. However, the imaging apparatus according to the embodiment of the present invention is not limited to the camera. Absent.

  FIG. 1 is a block diagram showing the configuration of an example of a camera according to an embodiment of the present invention.

  The illustrated camera includes a photographing lens unit (hereinafter simply referred to as a photographing lens) 101, an aperture and shutter 102, an automatic exposure (AE) processing unit 103, a focus lens 104, an autofocus (AF) processing unit 105, an image sensor 106, and the like. An A / D converter 107 is provided.

  The taking lens 101 shown in the figure has a zoom mechanism, and the diaphragm and shutter 102 adjust the incident light, which is reflected light of the subject, under the control of the AE processing unit 103, and the incident light amount and charge accumulation with respect to the image sensor 106. Adjust the time. The AE processing unit 103 controls the operation of the aperture and shutter 102 and also controls an A / D conversion unit 107 described later.

  The focus lens 104 moves along the optical axis according to the control of the AF processing unit 105, focuses on the light receiving surface of the image sensor 106, and forms an optical image on the light receiving surface.

  The image sensor 106 is a CCD element or a CMOS element, and photoelectrically converts an optical image formed on the light receiving surface and outputs it as an electrical signal (analog signal). This analog signal is converted into a digital signal (image signal) by the A / D converter 107.

The A / D converter 107, both the CDS circuit is provided to remove noise from the analog signal, and the analog signal is a nonlinear amplifier circuit for non-linear amplification provided before converting an analog signal into a digital signal Yes .

  The illustrated image pickup element 106 has a plurality of image pickup drive modes in which the frame rate and the number of lines for reading out charges (that is, analog signals) are different from each other. As described later, the image pickup drive mode is set by the system control unit 112. Can be switched.

  The digital signal that is the output of the A / D conversion unit 107 is given to the image processing unit 108. The image processing unit 108 performs resize processing such as predetermined pixel interpolation processing and image reduction processing and color conversion processing on the digital signal, and outputs the result as image data. The format conversion unit 109 converts the format of the image data in order to store the image data in the DRAM 110.

  The DRAM 110 is a high-speed built-in memory, is used as a high-speed buffer that temporarily stores image data, and is also used as a working memory when compressing / decompressing image data.

Furthermore, the camera includes an image recording unit 111, a system control unit 112, a VRAM 113, an operation display unit 114, an operation unit 115, a main switch (main SW) 116, a first switch (SW1) 117, and a second switch (SW2) 118. Have.

The image recording unit 111 includes a recording medium such as a memory card for recording image data (still image or moving image) obtained as a result of photographing, and an interface thereof. The system control unit 112 includes a CPU, a ROM, and a RAM, and the CPU develops and executes a program stored in the ROM in a RAM work area. As a result, the CPU controls the entire camera. Further, as described above, the system control unit 112 (i.e., CPU) is selectively controlling whether to drive the image pickup device 106 at any of the imaging drive mode among the plurality of imaging drive mode.

  The VRAM 113 is a memory for image display, and the operation display unit 114 is, for example, an LCD. Then, under the control of the system control unit 112, the operation display unit 114 displays the image data recorded in the VRAM 113 as an image. In addition, various information for assisting operations, status information indicating the camera status, and the like are displayed on the operation display unit 114, and a shooting screen (that is, a through image) and a distance measurement area are displayed during shooting. The

  The user operates the camera using the operation unit 115. The operation unit 115 includes menu switches for performing various settings such as exposure correction, aperture value setting, and image reproduction setting. Further, the operation unit 115 is provided with a zoom lever for instructing a zoom operation of the photographing lens 101, an operation mode switching switch for switching between a photographing mode and a reproduction mode, and the like.

  The main switch 116 is a switch for turning on the power of the camera, and the first switch 117 is a switch for performing photographing preparation operations such as AE processing and AF processing. The second switch 118 is a switch for giving a shooting instruction to the system control unit 112 after the operation of the first switch 117.

  If the first switch 117 is continuously operated without operating the second switch 118, the system control unit 112 performs a shooting setting holding operation for holding data obtained by the shooting preparation operation.

  FIG. 2 is a flowchart for explaining still image shooting processing in the camera shown in FIG. The system control unit 112 (that is, the CPU) expands and executes a predetermined program stored in the ROM in the RAM work area, whereby the processing in the flowchart shown in FIG. The AE processing unit 103 and the AF processing unit 105 are controlled.

  When the main switch 116 is turned on, the system control unit 112 determines whether or not the first switch 117 is turned on (step S201). If first switch 117 is not turned on (NO in step S201), system control unit 112 stands by.

  On the other hand, when the first switch 117 is turned on (YES in step S201), the system control unit 112 first controls the AE processing unit 103 to execute AE processing (step S202). In step S202, the AE processing unit 103 sets an exposure condition for executing the AF process. Here, in the setting of the exposure conditions, the aperture value for the aperture and shutter 102, the shutter speed, and the gain increase amount for adjusting the gain of the image signal that is the output of the image sensor 108 are set according to the shooting scene.

  Subsequently, the system control unit 112 switches the imaging drive mode of the image sensor 106 to an AF drive mode (first imaging drive mode: here, corresponding to the selected imaging drive mode) (step S203).

  Here, by selecting an AF drive mode, which is an image capture drive mode with a fast frame rate when driving the image sensor 106, the time required for AF processing performed in step S204 described later is shortened. Then, the system control unit 112 controls the AF processing unit 105 to execute AF processing (step S204). These AE processing and AF processing are called photographing standby operations.

  In the AF process, a process is performed in which the lens position where the high frequency component of the luminance signal obtained from the image sensor 106 is maximized is set to the in-focus position. Specifically, the AF processing unit 105 drives the focus lens 104 along the optical axis over the entire range of distance measurement under the control of the system control unit 112.

  Then, the system control unit 112 stores the evaluation value obtained according to the high frequency component of the luminance signal obtained from the image sensor 106 each time. The system control unit 112 performs AF processing (focus adjustment) by a so-called scanning method in which the lens position corresponding to the maximum value of the stored evaluation value is the in-focus position (corresponding to obtaining post-adjustment shooting settings).

Next, the system control unit 112 determines whether or not the second switch 118 is turned on within a predetermined time after the first switch 117 is turned on (step S205). This determination is called SW2 quick press determination.

  Here, the predetermined time is, for example, the time from when the first switch 117 is turned on until the AF processing is completed.

  Depending on the result of the SW2 stroke determination, the system control unit 112 confirms whether or not the SW2 stroke determination has been made (step S206). If the SW2 stroke determination is not made (NO in step S206), that is, if the ON operation of the first switch 117 is kept, the system control unit 112 sets the imaging drive mode of the image sensor 106 to SW1, which will be described later. It is determined whether or not to switch to a driving mode (second imaging driving mode) (step S207).

The SW1 holding drive mode is selected when the ON operation of the first switch 117 is held (that is, when the SW1 holding process image is being performed).

  In the process of step S207, for example, when the SW1 holding process is performed, the system control unit 112 considers that the user is highly likely to adjust the shooting angle of view, and the through image during the SW1 holding process. Is determined to switch to the SW1 holding drive mode.

  Whether or not it looks good is determined according to the difference in the number of read lines between the AF driving mode and the SW1 holding driving mode. When the number of readout lines in the AF drive mode is equal to or greater than the predetermined number of lines, the system control unit 112 regards that the shooting angle of view can be easily adjusted even in the AF drive mode, and enters the SW1 holding drive mode. Do not switch.

  When the frame rate in the AF drive mode is equal to or lower than the predetermined frame rate, the system control unit 112 regards that the adjustment of the shooting angle of view is easy even in the AF drive mode, and the SW1 holding drive mode. Switching to may not be performed.

  In the image sensor 106, noise increases in image data obtained as a result of shooting as the sensitivity is increased. However, when the shooting scene is bright and the sensitivity of the image sensor 106 during the SW1 holding process is lower than a predetermined sensitivity, The system control unit 112 may consider that the influence of noise is small when adjusting the angle of view, and may not switch to the SW1 holding drive mode.

  On the other hand, the system control unit 112 may determine not to switch to the SW1 holding drive mode even when the user does not adjust the shooting angle of view. As an example of a case where the user determines not to adjust the shooting angle of view, there is a state where the camera is substantially fixed, for example, when the camera and a tripod are connected.

  When determining whether or not the camera is fixed, the system control unit 112 uses, for example, an output of a gyro sensor (not shown) that can detect an angular velocity of an object such as a subject. The system control unit 112 determines that the camera is fixed when the angular velocity that is the output of the gyro sensor is smaller than the predetermined angular velocity.

  Next, in accordance with the determination result obtained in step 207, the system control unit 112 confirms whether switching to the SW1 holding drive mode is necessary (step S208). If switching to the SW1 holding drive mode is necessary (YES in step S208), the system control unit 112 switches the imaging drive mode of the image sensor 106 to the SW1 holding drive mode (step S209).

Here, since the SW1 holding drive mode is an image pickup drive mode in which the number of readout lines when driving the image sensor 106 is equal to or greater than a predetermined number, the appearance of the through image is improved. Therefore, the user can easily adjust the shooting angle of view when the ON operation of the first switch 117 is held.

Subsequently, the system control unit 112 determines whether or not the second switch 118 is turned on (step S210). If the second switch 118 is not turned on (NO in step S210), the system control unit 112 determines whether the ON state of the first switch 117 is maintained (step S211).

If the ON state of first switch 117 is not maintained (NO in step S211), system control unit 112 returns to the process of step S201. On the other hand, when ON state of first switch 117 is maintained (YES in step S211), system control unit 112 returns to the process of step S210.

When the second switch 118 is turned on (YES in step S210), the system control unit 112 switches the imaging drive mode of the image sensor 106 to the main imaging drive mode (third imaging drive mode) (step S212). ), Actual photographing is executed (step S213). Then, the system control unit 112 ends the photographing process.

  If it is not necessary to switch to the SW1 holding drive mode in step S208 (NO in step S208), the system control unit 112 proceeds to the process in step S211. If it is determined in step S206 that SW2 is determined at a stroke (YES in step S206), that is, if the ON operation of 117 of the first switch is not maintained, the system control unit 112 proceeds to the process of step S212.

  In this way, the release time lag can be shortened by switching the imaging drive mode of the imaging element 106.

  Here, the imaging drive mode of the image sensor 106 shown in FIG. 1 will be described. Here, the AF driving mode, the SW1 holding driving mode, and the main photographing driving mode will be described.

  FIG. 3 is a diagram showing the relationship between the number of readout lines and the frame rate for each imaging drive mode of the imaging device 106 shown in FIG.

  In general, the larger the number of readout lines in the image sensor 106, the higher the resolution of the image and the better the appearance of the image. By the way, as a technique for reducing the number of read lines, for example, when reading from the image sensor 106, there is a technique of thinning out the reading every several lines. On the other hand, the faster the frame rate, the shorter the time required for reading. Therefore, when reading is continuously performed under various shooting conditions, the high frame rate leads to a reduction in processing time.

  As described with reference to FIG. 2, the system control unit 50 switches to the AF drive mode after the AE process by turning on SW1. In addition, the system control unit 50 switches to the SW1 holding drive mode according to a predetermined condition after the AF processing by turning on SW1. Then, when the SW2 is turned on, the system control unit 50 switches to the actual photographing drive mode.

As shown in FIG. 3, the AF drive mode, the number of read lines is a first number of lines (small), while the frame rate is first frame rate (speed). In the SW1 holding drive mode, the number of read lines is the second number (medium), while the frame rate is the second frame rate (medium). In the actual photographing drive mode, the number of read lines is the third number (many). That is, the first line number <the second line number <the third line number, and the first frame rate> the second frame rate.

  In the AF process, when the above-described scan method is used, it is necessary to read the image sensor 106 and calculate the evaluation value according to the position of the focus lens while driving the focus lens 104. For this reason, the faster the frame rate, the faster the evaluation value can be calculated for each position of the focus lens. That is, in order to shorten the AF processing time, it is desirable to set the frame rate as fast as possible.

  On the other hand, generally, the smaller the number of readout lines, the faster the frame rate can be. However, the smaller the number of readout lines, the rougher the image when acquiring the evaluation value in AF processing. For this reason, the evaluation value is easily affected by noise and the like. Furthermore, since the amount of noise increases as the gain increase amount increases, when the gain increase amount is large, the frame rate may be slowed down to increase the number of read lines.

As described above, in the SW1 holding drive mode, the number of readout lines is “medium”, which is relatively large, and the system control unit 112 switches to the SW1 holding drive mode in the time from the AF process to the main photographing when the SW1 is turned on. . When the SW1 holding process is being performed, as described above, the system control unit 112 considers that the user is highly likely to adjust the shooting angle of view, and gives priority to the appearance of the through image during the SW1 holding process. To do. For this reason, in the SW1 holding drive mode, the number of read lines is larger (medium).

On the other hand, if the frame rate is too low, it is difficult to appropriately represent the change in the angle of view according to the moving subject and the movement of the camera. Therefore, during the SW1 holding process , the SW1 holding driving mode in which the number of lines is large (medium) and the frame rate is not too low (medium) is used.

In the main photographing drive mode , as described above, the number of readout lines is increased in favor of the image resolution.

  As described above, in the embodiment of the present invention, since the appropriate imaging drive mode of the imaging device is switched according to the operation state of the camera, the release time lag can be shortened and user-desired imaging can be performed.

As is clear from the above description, in the example shown in FIG. 1, the photographing lens 101, the diaphragm and shutter 102, and the focus lens 104 constitute an optical system. The system control unit 112 functions as a drive control unit, an adjustment unit, a photographing unit, and a photographing setting holding unit. SW1 functions as a first instruction unit, and SW2 functions as a second instruction unit. The system control unit 112 and the gyro sensor also function as a determination unit.

  As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to these embodiment, Various forms of the range which does not deviate from the summary of this invention are also contained in this invention. .

  For example, the function of the above embodiment may be used as a control method, and this control method may be executed by the imaging apparatus. Further, a program having the functions of the above-described embodiments may be used as a control program, and the control program may be executed by a computer included in the imaging apparatus. The control program is recorded on a computer-readable recording medium, for example.

  Each of the above control method and control program has at least a drive control step, an adjustment step, a photographing step, and a photographing setting holding step.

  The present invention can also be realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various recording media, and the computer (or CPU, MPU, etc.) of the system or apparatus reads the program. To be executed.

DESCRIPTION OF SYMBOLS 101 Shooting lens 102 Aperture and shutter 103 AE processing unit 104 Focus lens 105 AF processing unit 106 Image sensor 107 A / D conversion unit 108 Image processing unit 111 Image recording unit 112 System control unit

Claims (12)

An imaging device that outputs an image signal of an optical image formed through the optical system and photoelectrically converted,
When driving the image sensor, drive control means for driving the image sensor in accordance with the selected imaging drive mode with one of a plurality of imaging drive modes as a selected imaging drive mode;
Adjustment means for adjusting the shooting settings, which are settings related to the shooting, to obtain the adjusted shooting settings at the time of shooting;
Photographing means for photographing according to the adjusted photographing setting;
A photographing setting holding unit that holds the adjusted photographing setting until photographing by the photographing unit is performed after the adjustment of the photographing setting by the adjusting unit is completed;
The drive control unit selects a first imaging drive mode when an instruction for adjusting the shooting setting is given, and after the instruction for adjusting the shooting setting is given, the adjustment of the shooting setting by the adjusting unit is performed. When there is an instruction to shoot after completion, when switching from the first imaging drive mode to the second imaging drive mode, and when there is an instruction to shoot before the adjustment of the shooting setting by the adjustment unit is completed, Switch to a third imaging drive mode different from the first imaging drive mode and the second imaging drive mode,
An image pickup apparatus, wherein the first image pickup drive mode and the second image pickup drive mode differ in at least the number of readout lines or the frame rate in the image pickup element. The drive control means does not switch to the second imaging drive mode when the number of readout lines in the first imaging drive mode is equal to or greater than a predetermined number of lines. The imaging device described. The imaging apparatus according to claim 1 or 2, characterized in that the number of the read line is larger than the first image pickup drive mode and the second imaging drive mode in the third image pickup driving mode. An image sensor that photoelectrically converts an optical image formed through an optical system and outputs an image signal;
When driving the image sensor, drive control means for driving the image sensor in accordance with the selected imaging drive mode with one of a plurality of imaging drive modes as a selected imaging drive mode;
Adjustment means for adjusting the shooting settings, which are settings related to the shooting, to obtain the adjusted shooting settings at the time of shooting;
Photographing means for photographing according to the adjusted photographing setting;
A photographing setting holding unit that holds the adjusted photographing setting until photographing by the photographing unit is performed after the adjustment of the photographing setting by the adjusting unit is completed;
The drive control unit selects a first imaging drive mode as the selected imaging drive mode when the adjustment unit adjusts the shooting setting, and the first imaging drive according to a predetermined condition. Switch from mode to second imaging drive mode,
The first imaging driving mode and the second imaging driving mode are different in at least the number of readout lines or the frame rate in the imaging element,
The drive control means determines whether the number of readout lines in the first imaging drive mode is equal to or greater than a predetermined number of lines as the predetermined condition, and reads out the readout lines in the first imaging drive mode. If the number is at least a predetermined number of lines, the image pickup apparatus characterized by not switch to the second imaging drive mode. An image sensor that photoelectrically converts an optical image formed through an optical system and outputs an image signal;
When driving the image sensor, drive control means for driving the image sensor in accordance with the selected imaging drive mode with one of a plurality of imaging drive modes as a selected imaging drive mode;
Adjustment means for adjusting the shooting settings, which are settings related to the shooting, to obtain the adjusted shooting settings at the time of shooting;
Photographing means for photographing according to the adjusted photographing setting;
A photographing setting holding unit that holds the adjusted photographing setting until photographing by the photographing unit is performed after the adjustment of the photographing setting by the adjusting unit is completed;
The drive control unit selects a first imaging drive mode as the selected imaging drive mode when the adjustment unit adjusts the shooting setting, and the first imaging drive according to a predetermined condition. Switch from mode to second imaging drive mode,
The first imaging driving mode and the second imaging driving mode are different in at least the number of readout lines or the frame rate in the imaging element,
The drive control means determines whether the frame rate in the first imaging drive mode is equal to or lower than a predetermined frame rate as the predetermined condition, and the frame rate in the first imaging drive mode is An imaging apparatus characterized by not switching to the second imaging drive mode when the frame rate is equal to or lower than a predetermined frame rate. An imaging apparatus having an imaging element that photoelectrically converts an optical image formed through an optical system and outputs an image signal,
When driving the image sensor, drive control means for driving the image sensor in accordance with the selected imaging drive mode with one of a plurality of imaging drive modes as a selected imaging drive mode;
Adjustment means for adjusting the shooting settings, which are settings related to the shooting, to obtain the adjusted shooting settings at the time of shooting;
Photographing means for photographing according to the adjusted photographing setting;
A shooting setting holding unit that holds the adjusted shooting setting until the shooting by the shooting unit is performed after the adjustment of the shooting setting by the adjusting unit;
And a determination means for determining whether the imaging apparatus is fixed,
The drive control unit selects a first imaging drive mode as the selected imaging drive mode when the adjustment unit adjusts the shooting setting, and the first imaging drive according to a predetermined condition. Switch from mode to second imaging drive mode,
The first imaging driving mode and the second imaging driving mode are different in at least the number of readout lines or the frame rate in the imaging element,
Said drive control means, wherein when the image pickup apparatus by the determination means as the predetermined condition is determined to be fixed, imaging, characterized in that does not perform the switching to the second imaging drive mode apparatus. The imaging apparatus according to any one of claims 1 to 6, characterized in that the adjustment of the photographing setting by adjusting means is a process of performing a focus adjustment. The imaging apparatus according to any one of claims 1 to 7, characterized in that the number of the read line is less than said second imaging drive mode in said first imaging drive mode. The imaging apparatus according to any one of claims 1 to 8, wherein the frame rate is faster than the second imaging drive mode in said first imaging drive mode. An image sensor that photoelectrically converts an optical image formed through an optical system and outputs an image signal;
When driving the image sensor, drive control means for driving the image sensor in accordance with the selected imaging drive mode with one of a plurality of imaging drive modes as a selected imaging drive mode;
Adjustment means for adjusting the shooting settings, which are settings related to the shooting, to obtain the adjusted shooting settings at the time of shooting;
Photographing means for photographing according to the adjusted photographing setting;
A photographing setting holding unit that holds the adjusted photographing setting until photographing by the photographing unit is performed after the adjustment of the photographing setting by the adjusting unit is completed;
The drive control unit selects a first imaging drive mode as the selected imaging drive mode when the adjustment unit adjusts the shooting setting, and the first imaging drive according to a predetermined condition. Switch from mode to second imaging drive mode,
The first imaging driving mode and the second imaging driving mode are different in at least the number of readout lines or the frame rate in the imaging element,
The drive control means slows down and reads the frame rate in the first imaging drive mode as the gain increase amount for adjusting the gain of the image signal that is the output of the imaging element increases as the predetermined condition. An imaging apparatus characterized by increasing the number of lines. A method for controlling an imaging apparatus having an imaging element that photoelectrically converts an optical image formed through an optical system and outputs an image signal,
When driving the image sensor, a drive control step of driving the image sensor according to the selected imaging drive mode with one of a plurality of imaging drive modes as a selected imaging drive mode;
An adjustment step for adjusting the shooting settings, which are settings related to the shooting, to obtain the adjusted shooting settings when shooting,
A shooting step of shooting according to the adjusted shooting setting;
A shooting setting holding step for holding the adjusted shooting settings until shooting by the shooting step is performed after the adjustment of the shooting settings by the adjustment step is completed;
In the drive control step, when an instruction for adjusting the shooting setting is given, the first imaging drive mode is selected, and after the instruction for adjusting the shooting setting is given, the adjustment of the shooting setting by the adjusting step is performed. When there is an instruction to shoot after completion, when switching from the first imaging drive mode to the second imaging drive mode, and when there is an instruction to shoot before the adjustment of the shooting setting by the adjustment step is completed, Switch to a third imaging drive mode different from the first imaging drive mode and the second imaging drive mode,
The control method characterized in that the first imaging drive mode and the second imaging drive mode are different in at least the number of readout lines or the frame rate in the imaging device. A control program used in an image pickup apparatus having an image pickup device that photoelectrically converts an optical image formed through an optical system and outputs an image signal,
In the computer provided in the imaging device,
When driving the image sensor, a drive control step of driving the image sensor according to the selected imaging drive mode with one of a plurality of imaging drive modes as a selected imaging drive mode;
An adjustment step for adjusting the shooting settings, which are settings related to the shooting, to obtain the adjusted shooting settings when shooting,
A shooting step of shooting according to the adjusted shooting setting;
After the adjustment of the shooting setting by the adjustment step is completed, a shooting setting holding step for holding the adjusted shooting setting until shooting by the shooting step is performed,
In the drive control step, when an instruction for adjusting the shooting setting is given, the first imaging drive mode is selected, and after the instruction for adjusting the shooting setting is given, the adjustment of the shooting setting by the adjusting step is performed. When there is an instruction to shoot after completion, when switching from the first imaging drive mode to the second imaging drive mode, and when there is an instruction to shoot before the adjustment of the shooting setting by the adjustment step is completed, Switch to a third imaging drive mode different from the first imaging drive mode and the second imaging drive mode,
A control program characterized in that the first imaging drive mode and the second imaging drive mode differ in at least the number of readout lines or the frame rate in the imaging device.

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