JP4451467B2 - Imaging device - Google Patents

Description

  The present invention relates to an imaging apparatus such as a silver salt film camera, a digital camera, or a movie camera.

  Conventionally, all silver salt film cameras and digital cameras have been technically advanced in order to obtain better shooting results (see, for example, Patent Document 1). That is, to obtain an in-focus image, an appropriate image for exposure, an image without blurring, an image with an appropriate color balance, or a single image that can be obtained on a single shot and uniform on the screen. It is to obtain an exposure screen.

  However, due to diversification of values, it is also one field to shoot images with poor image quality as quaint or playful using low-quality and low-reliability silver film cameras. It is being established. For example, the image is out of focus, the image is underexposed or overexposed, the image is blurred, the image is out of color balance, or the image is a combination thereof.

  Similarly, an image in which a trouble caused by a hardware trouble of the photographing apparatus has occurred is actively photographed as a quaint or playful one. For example, an image that has been subjected to multiple exposures, an image with frame overlap, an image with light leakage, or an image in which they are combined.

JP 2001-257777 A

  However, as described above, an image to be actively photographed does not have to have a low image quality or a defect. The low image quality and the defect occurrence are suppressed within an appropriate range. It needed to be a painting that can be appreciated. For this purpose, the user of the photographing apparatus needs to have a certain level of photographing technique and knowledge about the photographing apparatus, and the photographing cannot be easily performed. Moreover, even if the shooting technique and knowledge are fully utilized, it is not always possible to obtain a tasteful or playful image.

  The present invention has been made in view of the above-described problems in the prior art, and has an image capturing function capable of easily or intentionally capturing a low-quality image or a pleasing or playful image in which a defect has occurred. An object is to provide an apparatus.

The imaging device of the present invention provided to solve the above-described problems includes the following technical features (1) to (6) .
(1): An image pickup apparatus including an image pickup unit that picks up a subject image and a signal processing unit that processes an image signal obtained by the image pickup unit. The obtained image signal and the image signal photographed before by the imaging device are combined according to a plurality of conditions, and at least one set value among the set values of the plurality of conditions is The imaging apparatus is characterized in that the setting is performed by randomly changing the setting.

(2): comprising random number generation means, and setting at least one set value among the set values of the condition at random for each shooting based on the random number generated by the random number generation means The imaging apparatus according to (1), which is characterized.

(3): The setting values of the plurality of conditions include at least one of setting of the number of sheets to be combined, setting of photographing signals to be combined, and setting of overlapping positions. It is an imaging device as described in above.

(4) In any one of the above (1) to (3), among the plurality of conditions, a condition for changing a setting value randomly at each photographing is set at random. It is an imaging device of description.

(5) In any one of the above (1) to (3), the user can select a condition for setting a set value by randomly changing each time shooting is performed among the plurality of conditions. It is an imaging device of description.

(6) The imaging apparatus according to any one of (1) to (3), wherein a user can set a weight between conditions for setting a set value by randomly changing each time shooting is performed. It is.

  According to the image pickup apparatus of the present invention, an unexpected image quality lowering effect and trouble occurrence effect which is unexpected by the user can be obtained.

Hereinafter, a configuration of an imaging apparatus according to an embodiment of the present invention will be described with reference to the drawings.
Here, the description will be made on the assumption of the configuration of the imaging apparatus of the present invention which is a digital still camera having an autofocus (AF) function, an auto iris (AE) function, a camera shake correction function, and an auto white balance function (AWB). The target to be applied is not limited to this, and may be an imaging device (single-lens reflex camera, video camera, or the like) having at least one of the functions. The autofocus (AF) function, auto iris (AE) function, camera shake correction function, and auto white balance function (AWB) may be conventionally known techniques. The digital still camera here has an optical lens system, a diaphragm, and an image sensor (CCD) as an image pickup means, and the shutter operates when the release button provided on the still camera is pressed in two stages. In this configuration, a subject image is formed on the image sensor through an optical system lens and a diaphragm set to predetermined photographing conditions. In addition, a metering unit that measures the brightness of external light by pressing the shutter button in the first stage, a ranging unit that measures the distance to the subject, and the like are provided. Furthermore, a known signal processing unit having a correlated double sample unit, an auto gain control unit, an A / D conversion unit, and a digital signal processing unit for processing an image signal obtained by the imaging unit is provided.

FIG. 1 is a flowchart showing a flow of operations and shooting control in a low image quality mode in a digital still camera which is an imaging apparatus according to the present invention.
The configuration and operation will be described below with reference to FIG.
When the low image quality shooting mode is set, the shooting control system may be switched from the normal automatic shooting mode to the low image quality mode by operating the mode switching unit of the digital still camera. Also, there is no problem even if it is configured to be in the low image quality mode immediately after power-on. When switching to the low image quality mode, automatic low image quality mode, random low image quality mode, and manual low image quality mode can be selected. Or, when applying to individual products, there is no problem even if only one of the low image quality modes is adopted.
Hereinafter, each low image quality mode will be described.

(1) Automatic low image quality mode When the automatic low image quality mode is selected, the photographing system is controlled in a state where both the random low image quality mode and the manual low image quality mode are turned off.
When shooting, the first release RL1 is turned on when the user presses the shutter button halfway (pressing down in the first stage) (S101), and the subject is detected by a sensor of an automatic mechanism such as distance measuring means, photometric means, and blur detection. The distance and the brightness of outside light are measured and detected (S102).
Based on the measurement and detection results, appropriate values (depth of field L, EV value E, image plane speed V, color temperature W) are determined (S103).

Of these appropriate values, the depth of field L has a range from the near point L _N to the far point L _F of the depth of field obtained from the distance to the subject. Specifically, the near point L _N and the far point L _F of the depth of field are obtained by the following equations.
L _N = (OD ′ * OD) / (OD ′ + OD) (1)
L _F = (OD ′ * OD) / (OD′−OD) (2)
Where OD is the object distance, FL is the focal length of the photographing lens, F is the optimum aperture value of the lens for photographing, δ is the permissible circle of confusion, and OD ′ = (FL * FL / (δ * F)) * OD It is. The image plane velocity V is a velocity component (mm / sec) parallel to the image plane of the image point.

Next, by confirming the state of the low image quality mode ON (S104) and the random mode OFF (S105), constants a = 1, b = 1, c = 1, d in the following equations (3) to (6). = 1, and the AF shift amount S _AF , the AE shift amount S _AE , the blur correction coefficient K, and the AWB shift amount S _AWB are determined (S107).

S _AF = K1 * a = K1 (3)
S _AE = K2 * b = K2 (4)
K = K3 * c = K3 (5)
S _AWB = K4 * d = K4 (6)

  The values of K1 to K4 at this time are constants set in advance before shooting, and are automatically set by the shooting control system. Or you may make it set by selection from the constant table by a user, or numerical input.

  Next, by confirming the state of the manual mode OFF (S108), shooting of the depth of field L1, the EV value E1, the image plane speed V1, and the color temperature W1 is performed according to the following formulas (7) to (10). Conditions are calculated (S110).

L1 = L + K1 (7)
E1 = E + K2 (8)
V1 = V + K3 (9)
W1 = W + K4 (10)

Thereafter, in order to set the focus and iris to the shooting conditions based on the above formulas (7) to (9), the imaging mechanism such as the lens barrel of the still camera and the shutter aperture is driven and adjusted to enter the shooting preparation state (S111). .
When the user further presses the shutter button (second-stage depression) to turn on the second release RL2 (S112), the subject image is exposed on the CCD under predetermined photographing conditions (S113). The captured image data is subjected to white balance adjustment based on the calculated color temperature W1 in the signal processing means, and is subjected to other predetermined signal processing. The image data after the signal processing is displayed on a liquid crystal screen equipped with a digital still camera, recorded in a memory or the like as necessary, and the shooting is completed.
In the above description, the shooting conditions (depth of field L1, EV value E1, image plane speed V1, color temperature W1) are all set and shot. However, only one of these shooting conditions, Alternatively, any combination of shooting conditions may be selected automatically or at the user's will, and other shooting conditions may be set to appropriate values.
The driving of the focus, the iris, etc. may be performed after the second release RL2 is turned on.
In the above-described photographing control system, the photographing condition is shifted by a predetermined amount from the appropriate value calculated based on the result measured by the sensor of the automatic mechanism, and a certain low-quality image is stably displayed. It is obtained.

(2) Random low image quality mode When the random low image quality mode is selected, the following control is performed so that the combination of the individual factors that degrade the image quality and the weight of the effect change for each shooting. .
At the time of shooting, the first release RL1 is turned on (S101), and the sensor of the automatic mechanism is measured and detected (S102). Appropriate values (depth of field L, EV value E, image plane speed V, color temperature W) Is the same as in the automatic low image quality mode until (S103) is determined.

Next, by confirming the state of the low image quality mode ON (S104) and the random mode ON (S105), each of the constants a to d is generated based on random number generation within a numerical range determined by each of the constants a to d. A numerical value is set (S106). The AF shift amount S _AF , the AE shift amount S _AE , the blur correction coefficient K, and the AWB shift amount S _AWB are determined according to the following equations (11) to (14) (S107). As a result, each shift amount and coefficient change randomly each time shooting is performed.

S _AF = K1 * a (11)
S _AE = K2 * b (12)
K = K3 * c (13)
S _AWB = K4 * d (14)

  The values of K1 to K4 at this time are constants set in advance before shooting, and are automatically set by the shooting control system. Or you may make it set by selection from the constant table by a user, or numerical value input.

  Next, by confirming the state of the manual mode OFF (S108), shooting of the depth of field L1, the EV value E1, the image plane speed V1, and the color temperature W1 is performed according to the following formulas (15) to (18). Conditions are calculated (S110).

L1 = L + K1 * a (15)
E1 = E + K2 * b (16)
V1 = V + K3 * c (17)
W1 = W + K4 * d (18)

Thereafter, in order to set the focus and iris to the shooting conditions based on the above formulas (15) to (17), the imaging mechanism such as the lens barrel of the still camera and the shutter aperture is driven and adjusted to enter the shooting preparation state (S111). .
When the user further presses the shutter button (second-stage depression) to turn on the second release RL2 (S112), the subject image is exposed on the CCD under predetermined photographing conditions (S113). The captured image data is subjected to white balance adjustment based on the calculated color temperature W1 in the signal processing means, and is subjected to other predetermined signal processing. The image data after the signal processing is displayed on a liquid crystal screen equipped with a digital still camera, recorded in a memory or the like as necessary, and the shooting is completed.
In the above description, the shooting conditions (depth of field L1, EV value E1, image plane speed V1, color temperature W1) are all set and shot. However, only one of these shooting conditions, Alternatively, any combination of shooting conditions may be selected automatically at random or with the intention of the user, and appropriate values may be set for other shooting conditions.
In the random low image quality mode, a low-quality image with a non-constant image quality is obtained every time a picture is taken, and the possibility of an unexpected image quality reduction effect unexpected by the user increases. Note that the user may be able to select the strength of the overall effect as in the automatic low image quality mode.

(3) Manual Low Image Quality Mode The manual low image quality mode is configured so that the user can select the action of each item and the weight of the effect at the user's will.
In this case, in FIG. 1, from the start of photographing to step S107 is the same as the above operation and operation contents, and either the automatic low image quality mode or random low image quality mode may be used. The operation content after step 108 will be described.

By confirming the state of the manual mode ON (S108), the constants a to d set by the user are applied to the equations (11) to (14), and the AF shift amount S _AF , the AE shift amount S _AE , A correction coefficient K for blur correction and an AWB shift amount S _AWB are determined (S109). The constants a to d may be set when the manual mode ON (S108) state is confirmed (while shooting), but should be set when the manual low image quality mode is selected before shooting. Also good. Next, the depth of field L1, the EV value E1, the image according to the equations (15) to (18) to which the equations (11) to (14) using the constants a to d set by the user are applied. Shooting conditions for the surface speed V1 and the color temperature W1 are calculated (S110).

Thereafter, in order to set the focus and iris to the shooting conditions based on the above formulas (15) to (17), the imaging mechanism such as the lens barrel of the still camera and the shutter aperture is driven and adjusted to enter the shooting preparation state (S111). .
When the user further presses the shutter button (second-stage depression) to turn on the second release RL2 (S112), the subject image is exposed on the CCD under predetermined photographing conditions (S113). The captured image data is subjected to white balance adjustment based on the calculated color temperature W1 in the signal processing means, and is subjected to other predetermined signal processing. The image data after the signal processing is displayed on a liquid crystal screen equipped with a digital still camera, recorded in a memory or the like as necessary, and the shooting is completed.
In the above description, the shooting conditions (depth of field L1, EV value E1, image plane speed V1, color temperature W1) are all set and shot. However, only one of these shooting conditions, Alternatively, any combination of imaging conditions may be selected at the user's will and appropriate values may be set for other imaging conditions.

  In addition, in step 109, the user may arbitrarily set functions related to the shooting conditions. For example, the user can select from the three options of “Make it work properly”, “Turn it off”, and “Shift from the appropriate value” for AE, and select the user to shift from the appropriate value. However, the shift amount and direction may be input to adjust the degree of the image quality reduction effect. Moreover, when the combination which can obtain the effect desired by the user can be set, the combination may be stored in the camera by a recording unit (not shown) and recalled later.

(4) Normal shooting mode When the normal shooting mode is selected by operating the mode switching unit of the still camera, the low image quality mode is turned off, and normal automatic shooting is enabled.
In the case of normal shooting, appropriate values (object distance L, EV value E, image plane speed V, color temperature W) based on the detection result determined in step S103 are set as shooting conditions as they are, and still images are generated based on the conditions. An imaging mechanism such as a camera barrel and a shutter aperture is driven and adjusted to be in a shooting preparation state (S111).
Next, when the user further presses the shutter button (second-stage pressing) to turn on the second release RL2 (S112), the subject image is exposed on the CCD under predetermined shooting conditions (S113). The captured image data is subjected to white balance adjustment based on an appropriate color temperature W and subjected to other predetermined signal processing. The image data after the signal processing is displayed on a liquid crystal screen equipped with a digital still camera, recorded in a memory or the like as necessary, and the shooting is completed.

An example in which shooting conditions are set for the low image quality mode in the shooting control system according to the present invention will be described below.
(A) Depth of field L1
In the above equation (15), for the depth of field L, the coefficient and constant are set after the maximum value or minimum value of the appropriate range is selected. Here, if the far point L _F is selected as the depth of field L, thereby forming _{K1 = L F, 0 <a} ≦ 1. When the near point L _N is selected as the depth of field L, K1 = L _N and −0.5 ≦ a <0.
That is,
L1 = L _F + L _F * a (0 <a ≦ 1)
L1 = L _N + L _N * a (−0.5 ≦ a <0)
And The selection of the far point L _F and the near point L _N of the depth of field L is made such that, for example, the far point L _F is selected in the automatic low image quality mode, and the random number generation in step S106 is used in the random low image quality mode. Either of them may be selected, and the user may be able to select in advance in the manual low image quality mode.

This is based on the following concept.
That is, in the above formulas (1) and (2), when the subject distance is OD, the subject image on the CCD (or on the image plane) is blurred when the lens is focused farther than L _F or closer to L _N. . Considering the case where the image is too blurred and does not become a picture, the value L1 deviating from an appropriate value suitable for the purpose of the present invention is preferably in the following range.
L _F <L1 ≦ 2 * L _F
L _N > L1 ≧ 0.5 * L _N
The coefficients and constants relating to the AF shift amount are set based on these two equations.

(B) EV value E1
Regarding the AE shift amount, the constants to be set differ depending on the type of imaging device to be applied or the type of film. This is due to the difference in the extent of exposure tolerance.
That is, in the case of a digital camera or a camera using a positive film, since the allowable exposure range is narrow, the above equation (16) is as follows.
E1 = E + K2 * b (K2 = ± 1, 0.5 ≦ b ≦ 2.5)
Further, in the case of a camera using a negative film, since the allowable exposure range is wide, the above equation (16) is as follows.
E1 = E + K2 * b (K2 = ± 1, 2 ≦ b ≦ 5)
For the selection of the value of K2, for example, K2 = 1 is selected in the automatic low image quality mode, and one is selected using random number generation in step S106 in the random low image quality mode. In the mode, the user may select in advance.

(C) Image plane speed V1
The above equation (17) is as follows.
V1 = V + K3 * c (K3 = δ / T, 0 ≦ c ≦ 5)
Here, V is a correctable image surface speed, that is, an appropriate image surface speed (mm / sec), and V = δ / T. Further, δ is an allowable circle of confusion diameter (mm), and T is an exposure time (sec).
This shooting condition is that one point on the subject should be focused on one point on the image plane, but an image blurred by intentionally moving a part of the photographic lens or the image plane itself beyond the permissible circle of confusion. Is to create. It should be noted that 6δ is set as an upper limit in consideration of a case where a picture is too blurred and becomes a picture.

(D) Color temperature W1
The above equation (18) is as follows.
W1 = W + K4 * d (K4 = ± 1500, 1 ≦ d ≦ 1.6)
This shooting condition is a condition that is applied only to a digital camera that performs signal processing of image data after being shot, and is a standard for adjusting the ratio of RGB output components so that white is colored as white in auto white balance. The white balance is shifted by changing the color temperature W (in this case, 5500 K).
For the selection of the numerical value of K4, for example, K4 = 1500 is selected in the automatic low image quality mode, and one is selected using the random number generation in step S106 in the random low image quality mode. In the image quality mode, the user may be able to select in advance.

Next, a configuration in another embodiment of the imaging apparatus according to the present invention will be described with reference to the drawings.
FIG. 2 is a flowchart showing a flow of operations and shooting control in the failure occurrence mode in the digital still camera which is the imaging apparatus according to the present invention. The object to which the imaging control system of the imaging apparatus according to the present invention is applied is applied to an imaging apparatus having a process capable of performing post-processing by performing signal processing after imaging of image data such as a digital still camera. In addition, various image pickup devices (single-lens reflex cameras, video cameras, etc.) may be used. The digital still camera here has an optical lens system, a diaphragm, and an image sensor (CCD) as an image pickup means, and the shutter operates when the release button provided on the still camera is pressed in two stages. In this configuration, a subject image is formed on the image sensor through an optical system lens and a diaphragm set to predetermined photographing conditions. In addition, a metering unit that measures the brightness of external light by pressing the shutter button in the first stage and a ranging unit that measures the distance to the subject are provided. Furthermore, a known signal processing unit having a correlated double sample unit, an auto gain control unit, an A / D conversion unit, and a digital signal processing unit for processing an image signal obtained by the imaging unit is provided.

The configuration and operation will be described below with reference to FIG.
In the case of the failure occurrence mode, the shooting control system may be switched from the normal automatic shooting mode to the failure occurrence mode by operating the mode switching unit of the digital still camera. Moreover, there is no problem even if it is configured to be in a failure occurrence mode immediately after power-on. Automatic failure occurrence mode that automatically generates a failure when switching to failure occurrence mode, random failure occurrence mode that randomly generates and combines failure combinations and effect weights, and manual failure that allows manual selection of failure items and effects The generation mode can be selected. Or, when applying to individual products, there is no problem even if only one failure occurrence mode is adopted.
The operation flow for each mode is basically the same as in the low image quality mode.

(1) Automatic failure occurrence mode When the automatic failure occurrence mode is selected, the photographing system is controlled in a state where both the random failure occurrence mode and the manual failure occurrence mode are OFF.
When shooting, the first release RL1 is turned on when the user presses the shutter button halfway (pressing down in the first stage) (S201), and the sensors of the automatic mechanism such as the distance measuring means, the photometry means, and the shake detection are moved to the subject. The distance and the brightness of the outside light are measured and detected (S202).
Based on the measurement and detection results, appropriate values (depth of field L, EV value E, image plane speed V, color temperature W) are determined (S203).

  Next, by confirming the state of the failure occurrence mode ON (S204) and the random mode OFF (S205), any of the defect items of multiple exposure, frame overlap, and light leakage is turned on, and A weight is set (S207).

  The weight of each defect item is a constant set in advance before shooting and is automatically set by the shooting control system. Or you may make it set by selection from the constant table by a user, or numerical input.

In parallel with or after the setting of the defect item, appropriate values (depth of field L, EV value E, image plane speed V, color temperature W) based on the detection result determined in step S203 are photographed as they are. An imaging mechanism such as a lens barrel of a still camera or a shutter diaphragm is driven and adjusted based on the condition, and a shooting preparation state is set (S211).
Next, when the user further presses the shutter button (second-stage pressing) to turn on the second release RL2 (S212), the subject image is exposed on the CCD under predetermined photographing conditions (S213).

At the same time as or before the photographing operation, the state of the manual mode OFF (S208) is confirmed, and the image data photographed in step S213 in the signal processing stage in accordance with the condition of the defect item set in step S207. Synthesized (S210). Note that multiple exposure and frame overlap are combined using image data captured before that time. Then, the defective image data after the signal processing is displayed on the liquid crystal screen equipped with the digital still camera, and is recorded in a memory or the like as necessary, and the photographing is finished (S214).
The driving of the focus, the iris, etc. may be performed after the second release RL2 is turned on.
In the above-described photographing control system, a defect adjusted based on a preset weight is generated, and an image having a certain defect can be stably obtained.

(2) Random defect occurrence mode When the random defect occurrence mode is selected, the following control is performed so that the combination of the individual elements that cause the above-described defects and the weight of the effect changes every shooting. .
At the time of shooting, the first release RL1 is turned on (S201), and the automatic mechanism sensor is measured and detected (S202). Appropriate values (depth of field L, EV value E, image plane speed V, color temperature W). Is the same as in the automatic failure occurrence mode until S203 is determined (S203).

Next, by confirming the state of the failure occurrence mode ON (S204) and the random mode ON (S205), the constants a to c corresponding to the failure item are within the numerical ranges determined by the constants a to c, respectively. Then, a numerical value based on random number generation is set, and at the same time, ON / OFF of each defect item is determined using random number generation (S206). Among the defective items of multiple exposure, frame overlap, and light leakage, the item determined in step S206 is turned ON, and constants a to c are added to the weights set in advance for the weights of the defective items turned ON. It is set (S207). As a result, the occurrence of each defect and the degree thereof randomly change at every shooting.
The imaging control in the subsequent steps is the same as in the automatic malfunction occurrence mode.
In the random defect occurrence mode, an image with a defect whose degree of the defect is not constant is obtained every time shooting is performed, and there is a high possibility that an unexpected defect occurrence effect unexpected by the user can be obtained.

(3) Manual failure occurrence mode In the manual failure occurrence mode, the operation of the failure item and the weight of the effect can be selected at the user's will.
In this case, in FIG. 2, from the start of photographing to step SS07 is the same as the above-described operation and operation contents, and any of the automatic failure occurrence mode and random failure occurrence mode may be used. The operation contents of steps S208 and S209 will be described.

By confirming the state of manual mode ON (S208), the failure item selected by the user is turned ON, and the weight of the failure item turned ON is set by the user to a preset weight. The constants a to c are set in consideration (S209). The constants a to c may be set when the manual mode ON (S208) state is confirmed (while shooting), but should be set when the manual failure occurrence mode is selected before shooting. Also good.
The imaging control in the subsequent steps is the same as in the automatic malfunction occurrence mode.

The contents of each defect will be described below.
(A) Multiple exposure effect In the case of a digital camera, a multiple exposure effect can be obtained by synthesizing a plurality of captured image data after mode setting. In the case of a silver salt film camera, multiple exposures are recorded on the same screen by stopping the film feed. At this time, setting of the number of multiple exposures and adjustment of exposure are performed in the form of effect weight adjustment.

(B) Frame overlap Both the digital camera and the silver halide film camera can be basically processed in the same way as multiple exposure. However, by weight adjustment, a frame to be overlapped (photographed image) and a position to overlap are specified.

(C) Light leakage In the case of a digital camera, the light source may emit light and a part of the image may be overexposed, or only the light leakage may be stored in advance in the camera, and the image is synthesized later. You can also In the case of a silver salt film camera, an operation that temporarily breaks the dark box state may be performed. Alternatively, a part of the film may be exposed by emitting a light source. In this case, a new light source may be installed, or a light source already built in the camera, such as an AF assist / strobe / date printing LED, may be guided to the photosensitive surface. However, by specifying the weight, the intensity of the light beam and the position and angle of the light beam are specified.

6 is a flowchart showing a flow of operations and shooting control in a low image quality mode in an embodiment of a shooting control system in an imaging apparatus according to the present invention. It is a flowchart which shows the flow of operation in the malfunction generation mode in other embodiment of the imaging | photography control system in the imaging device which concerns on this invention, and imaging | photography control.

Claims (6)

An imaging means for imaging a subject image;
Signal processing means for processing an image signal obtained by the imaging means;
An imaging device comprising:
The signal processing means synthesizes the image signal obtained by the photographing and the image signal photographed by the imaging device before that according to a plurality of conditions,
An image pickup apparatus characterized in that at least one set value among the set values of the plurality of conditions is set by changing at random each time an image is taken. Equipped with random number generation means,
2. The imaging according to claim 1, wherein at least one setting value among the setting values of the condition is randomly changed for each shooting based on a random number generated by the random number generation unit. apparatus.   3. The imaging apparatus according to claim 1, wherein the set values of the plurality of conditions include at least one of a setting of the number of images to be combined, a setting of a photographing signal to be combined, and a setting of an overlapping position.   The imaging apparatus according to any one of claims 1 to 3, wherein among the plurality of conditions, a condition for changing a setting value at random for each shooting is selected at random.   The imaging apparatus according to claim 1, wherein among the plurality of conditions, a user can select a condition for changing a setting value at random for each shooting.   The imaging apparatus according to any one of claims 1 to 3, wherein a user can set a weight between conditions for setting a set value by randomly changing each time shooting is performed.

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