JP2013179450A - Camera system and control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect an environmental temperature without adding a temperature detector.SOLUTION: A camera system captures images of a subject and creates image data. The camera system includes: an operation part having operating characteristics according to an environmental temperature and operated when capturing the images; a housing that houses the operation part; multiple temperature detection parts respectively detecting temperatures of detection target areas different from each other in the housing; a temperature estimation part estimating the environmental temperature on the basis of the temperatures detected by the multiple temperature detection parts; and a control part controlling the operation part on the basis of the environmental temperature estimated by the temperature estimation part.

Description

  The present invention relates to a camera system and a control program.

It has been proposed that a temperature detector is provided in a stepping motor and control is performed according to temperature (see Patent Document 1).
[Patent Document 1] Japanese Patent No. 2776438

  In a device including a plurality of elements, a temperature detector is not necessarily provided for each control target having temperature characteristics among the elements.

  As a first aspect of the present invention, a camera system that captures an image of a subject to generate image data, and includes an operation unit that operates when an image is captured with an operation characteristic corresponding to an environmental temperature, and the operation unit is accommodated A plurality of temperature detection units that detect temperatures of different detection target areas in the case, a temperature estimation unit that estimates an environmental temperature based on temperatures detected by the plurality of temperature detection units, and a temperature estimation A camera system is provided that includes a control unit that controls the operation unit based on the environmental temperature estimated by the unit.

  According to a second aspect of the present invention, there is provided a control program for controlling a camera system including a casing having an operating section that has an operation characteristic according to an environmental temperature and operates when a subject image is captured. A temperature detecting step for detecting a temperature in a plurality of temperature detection units that detect temperatures of different detection target areas in the temperature detection step, a temperature estimation step for estimating an environmental temperature based on the temperatures detected by the plurality of temperature detection units, and a temperature There is provided a control program for causing a computer to execute a control step of controlling the operation unit based on the environmental temperature estimated in the estimation step.

  The above summary of the present invention does not enumerate all necessary features of the present invention. A sub-combination of these feature groups can also be an invention.

1 is a cross-sectional view of a single-lens reflex camera 100. FIG. 3 is a block diagram of a temperature detection unit 401. FIG. 3 is a block diagram of a control unit 501. FIG. 3 is a flowchart showing a control procedure of a control unit 501. 3 is a flowchart showing a control procedure of a control unit 501. It is a graph explaining the control by the control part. 3 is a block diagram of a temperature detection unit 402. FIG. 3 is a block diagram of a control unit 502. FIG. 3 is a block diagram of a temperature detection unit 402. FIG.

  The present invention will be described below through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. In addition, not all the combinations of features described in the embodiments are essential for the solving means of the invention.

  FIG. 1 is a schematic cross-sectional view of a single-lens reflex camera 100 constituting a camera system. The single-lens reflex camera 100 includes a lens unit 200 and a camera body 300.

  In the following description, the object side with respect to the lens unit 200 attached to the camera body 300 is described as the front or the front in the single-lens reflex camera 100. Further, the side far from the object with respect to the lens unit 200 will be referred to as the rear or back side of the single-lens reflex camera 100.

  The lens unit 200 includes lenses 220, 230, 240, a lens side control unit 250, and a fixed cylinder 260. A lens side mount 262 is provided at the rear end of the fixed cylinder 260. The lens side mount part 262 is fitted with the body side mount part 362 of the camera body 300 to couple the lens unit 200 to the camera body 300.

  The coupling of the lens side mount portion 262 and the body side mount portion 362 can be released by a specific operation. Therefore, another lens unit 200 having the lens side mount portion 262 of the same standard can be attached to the camera body 300.

  In the lens unit 200, the lenses 220, 230, and 240 are arranged along the optical axis X inside the fixed cylinder 260 to form an optical system. Some or all of the lenses 220, 230, and 240 move along the optical axis X by being driven by the actuator 252. Thereby, the focal length and the focal position of the optical system change.

  A temperature detector 258 is disposed in the vicinity of the actuator 252. The temperature detector 258 detects the temperature of the detection target region including the actuator 252 and notifies the lens side control unit 250 of the detected temperature.

  The lens side control unit 250 controls the lens unit 200 itself and also communicates with the body side control unit 322 of the camera body 300. Accordingly, the lens side control unit 250 notified of the detected temperature from the temperature detector 258 is also transmitted to the body side control unit 322. The lens-side control unit 250 and the body-side control unit 322 form a control system for the entire single-lens reflex camera 100, and the camera body 300 and the lens unit 200 operate in cooperation.

  In the camera body 300, a mirror unit 380 is disposed on the opposite side of the lens unit 200 with the body side mount portion 362 interposed therebetween. A focusing screen 346 is disposed horizontally above the mirror unit 380.

  A pentaprism 344 is disposed further above the focusing screen 346, and a finder optical system 342 is disposed behind the pentaprism 344, respectively. The rear end of the viewfinder optical system 342 is exposed as a viewfinder 340 on the back surface of the camera body 300.

  In the camera body 300, a shutter device 310, an optical filter 372, and an image sensor 370 are sequentially arranged behind the mirror unit 380. The shutter device 310 has a front curtain and a rear curtain that individually open and close, and forms a focal plane shutter immediately before the image sensor 370.

  The optical filter 372 is installed immediately before the image sensor 370 and removes infrared rays and ultraviolet rays from the subject light flux incident on the image sensor 370. Further, the optical filter 372 protects the surface of the image sensor 370. Furthermore, the optical filter 372 reduces the spatial frequency of the subject luminous flux as a low-pass filter. Thereby, the occurrence of moiré is suppressed when a subject luminous flux having a spatial frequency exceeding the Nyquist frequency of the image sensor 370 is incident on the image sensor 370.

  The image sensor 370 disposed behind the optical filter 372 is formed by a photoelectric conversion element such as a CCD sensor or a CMOS sensor. Further, a temperature detector 378 is disposed in the vicinity of the image sensor 370. The temperature detector 378 detects the temperature of the detection target region including the image sensor 370 and notifies the body side control unit 322 of the detected temperature.

  A main substrate 320 and a rear display unit 330 are sequentially disposed behind the image sensor 370. Electronic components such as a body side control unit 322, an image processing unit 324, and a DC / DC converter 326 are mounted on the main board 320. The rear display unit 330 is formed of a liquid crystal display panel or the like, and is exposed on the rear surface of the camera body 300.

  In addition, a temperature detector 328 is disposed in the vicinity of the DC / DC converter 326 on the main substrate 320. The temperature detector 328 detects the temperature of the detection target region including the DC / DC converter 326 and notifies the body side control unit 322 of the detected temperature.

  As described above, a plurality of temperature detectors 258, 328, and 378 are arranged inside the single-lens reflex camera 100. The temperature detectors 258, 328, and 378 detect the temperatures of different detection areas in the fixed tube 260 and the housing 360 of the single-lens reflex camera 100, respectively.

  The mirror unit 380 has a main mirror holding frame 381 and a main mirror 382. The main mirror holding frame 381 is supported on the rear end side by the main mirror rotating shaft 383 while holding the main mirror 382.

  The mirror unit 380 also has a sub mirror holding frame 385 and a sub mirror 386. The sub mirror holding frame 385 is pivotally supported from the main mirror holding frame 381 by the sub mirror rotating shaft 387 while holding the sub mirror 386.

  As a result, the sub mirror 386 rotates with respect to the main mirror holding frame 381. When the main mirror holding frame 381 rotates, the sub mirror 386 and the sub mirror holding frame 385 rotate with respect to the main mirror holding frame 381 while moving together with the main mirror holding frame 381.

  In the mirror unit 380, when the front end of the main mirror holding frame 381 is in contact with the positioning pin 384, the main mirror 382 is positioned at the observation position. The main mirror 382 at the observation position obliquely crosses the optical axis X of the image light incident through the optical system of the lens unit 200.

  Part of the image light incident on the main mirror 382 at the observation position passes through a half mirror region formed on a part of the main mirror 382 and enters the sub mirror 386. Part of the subject light incident on the sub mirror 386 is reflected toward the focusing optical system 390 and eventually enters the focusing position sensor 392.

  The in-focus position sensor 392 detects the defocus amount in the optical system of the lens unit 200 and notifies the body side control unit 322 of it. The body side control unit 322 communicates with the lens side control unit 250 and operates the actuator 252 to move one of the lenses 220, 230, and 240 so as to cancel the detected defocus amount. In this way, the lens unit 200 is focused to form a subject image on the imaging surface of the image sensor 370.

  Further, the main mirror 382 at the observation position reflects most of the subject light beam toward the focusing screen 346. The focusing screen 346 is disposed at a position optically conjugate with the imaging surface of the imaging element 370, and visualizes the subject image formed by the optical system of the lens unit 200.

  The subject image connected to the focusing screen 346 is observed from the viewfinder 340 through the pentaprism 344 and the viewfinder optical system 342. The subject image through the pentaprism 344 is observed as an erect image from the finder 340.

  A part of the subject light beam emitted from the pentaprism 344 is received by the photometric sensor 350 disposed above the finder optical system 342. When the release button of the camera body 300 is pressed halfway, the photometric sensor 350 detects subject brightness from a part of the received incident light beam.

  The body-side control unit 322 calculates imaging conditions such as an aperture value, a shutter speed, and ISO sensitivity according to the detected subject brightness. Accordingly, the single-lens reflex camera 100 is in a state where it can shoot a subject under appropriate shooting conditions.

  When the release button is pressed in the single-lens reflex camera 100, the main mirror holding frame 381 rotates clockwise in the drawing together with the main mirror 382, contacts the buffer member 388, and stops substantially horizontally at the retracted position. The buffer member 388 is formed of an elastic material, and alleviates an impact when the main mirror holding frame 381 comes into contact. In this way, the main mirror 382 retracts from the optical path of the subject luminous flux incident through the optical system of the lens unit 200.

  When the main mirror 382 rotates toward the shooting position, the sub mirror holding frame 385 also rises together with the main mirror holding frame 381 and rotates around the sub mirror rotation shaft 387 and stops substantially horizontally at the shooting position. To do. As a result, the sub mirror 386 is also retracted from the optical path of the subject light flux.

  When the main mirror 382 and the sub mirror 386 are moved to the photographing position, the front curtain of the shutter device 310 is opened in the camera body 300 and the image frame is opened. Accordingly, the incident light beam incident through the optical system of the lens unit 200 is transmitted through the optical filter 372 and received by the image sensor 370.

  The image sensor 370 converts the image light received through the lens unit 200 into an electric signal and outputs it. The electric signal output from the image sensor 370 is converted into an image file by the image processing unit 324 and stored. As described above, the actuator 252, the image sensor 370, and the DC / DC converter 326 included in the detection target regions of the temperature detectors 258, 328, and 378 operate when the single-lens reflex camera 100 performs an image capturing operation.

  FIG. 2 is a block diagram illustrating functions of the temperature detection unit 401. The temperature detection unit 401 includes an analog / digital converter 321 corresponding to each of the temperature detectors 258, 328, and 378, and converts the temperatures detected by the plurality of temperature detectors 258, 328, and 378 into digital signals. The analog / digital converter 321 is individually connected to the input port of the body side control unit 322 or the lens side control unit 250. Accordingly, the lens-side control unit 250 and the body-side control unit 322 that are digital processors can transmit and process the detected temperature as temperature information.

  The control unit 501 formed by the body side control unit 322 and the lens side control unit 250 controls the actuator 252, the DC / DC converter 326, the image sensor 370, and the like that are control targets based on the acquired temperature information. Although three temperature detectors 258, 328, and 378 are shown in the drawing, there may be a case where more temperature detectors are provided inside the fixed tube 260 and the housing 360 of the single-lens reflex camera 100. Further, the control target of the control unit 501 is not limited to the actuator 252, the DC / DC converter 326, and the image sensor 370.

  As the temperature detectors 258, 328, and 378, for example, a thermistor can be used. The temperature detectors 258, 328, and 378 are respectively arranged in the vicinity of the detection target region. In the illustrated example, the detection target actuator 252, the DC / DC converter 326, and the image sensor 370 may be mounted on a common substrate. Thereby, the temperature change of a detection target can be detected sharply. However, the temperature detectors 258, 328, and 378 may be arranged in the vicinity of the detection target without being mounted on the same substrate as the detection target.

  FIG. 3 is a block diagram schematically showing the function of the control unit 501. The control unit 501 includes a comparator 512, a temperature estimation unit 514, and a drive unit 516.

  The comparator 512 compares a plurality of temperature information acquired from the temperature detection unit 401 and extracts temperature information having the highest value, temperature information having the lowest value, and the like. The temperature estimation unit 514 estimates the environmental temperature to be controlled based on the temperature information organized by the comparator 512.

  That is, the actuator 252, the DC / DC converter 326, and the image sensor 370 that are detection targets themselves generate heat in accordance with the operation. For this reason, the temperature detectors 258, 328, and 378 detect the temperature of each detection target, but the environmental temperature of the environment where the detection target is placed is not necessarily the same as the detection temperature. Therefore, the temperature estimation unit 514 estimates the environmental temperature based on the temperature information acquired from the plurality of temperature detectors 258, 328, and 378.

  In the control unit 501, the ambient temperature estimated by the temperature estimation unit 514 is used for control in a drive unit that drives a drive target such as the actuator 252, the DC / DC converter 326, the image sensor 370, and the like. That is, when a stepping motor is used as the actuator 252, for example, the stepping motor has a temperature characteristic in which the driving efficiency changes in accordance with a change in the environmental temperature, so that the drive control is performed while compensating the temperature characteristic in accordance with the estimated environmental temperature. To do.

  In addition, the DC / DC converter 326, the image sensor 370, etc. themselves generate heat during operation. If the temperatures of the DC / DC converter 326 and the image sensor 370 become extremely high, the conversion efficiency decreases, noise increases, and the like, so the operating temperature range is predetermined. Therefore, when the environmental temperature of the DC / DC converter 326, the image sensor 370, etc. rises, the drive unit 516 executes control such as changing the drive mode of these elements, stopping the operation, or generating an alarm. To do.

  Furthermore, in the single-lens reflex camera 100 including the lens unit 200 and the camera body 300, temperature detectors are not provided for all of the control targets of the control unit 501. Therefore, a control object that does not have an individual temperature detector can be controlled in consideration of temperature characteristics by estimating the environmental temperature.

  Note that the temperature estimation unit 514 may execute a plurality of estimation processes in parallel by a plurality of procedures. Thereby, as illustrated below, the temperature estimation unit 514 can estimate the environmental temperature in a region different from any detection target region of the plurality of temperature detectors 258, 328, and 378.

  FIG. 4 is a flowchart showing one estimation procedure in the temperature degree temperature estimation unit 514. As described above, the temperature estimation unit 514 receives a plurality of temperature information through the comparator 512. First, the temperature estimation unit 514 extracts the maximum value from the input plurality of temperature information (step S101). Further, the average value of the detected temperatures is calculated from the plurality of input temperature information.

  Next, the temperature estimation unit 514 calculates the difference between the maximum value and the average value (step S102). Subsequently, the temperature estimation unit 514 compares the calculated difference with a threshold value determined in advance for the difference (step S103). Here, the predetermined threshold value can be a threshold value for distinguishing whether or not the difference is a significant value.

  When the difference is smaller than the threshold value in step S103 (step S103: NO), the temperature estimation unit 514 estimates that there is no member that generates heat in the detection target regions of the temperature detectors 258, 328, and 378. (Step S104). When the difference is larger than the threshold value in step S103 (step S103: YES), the temperature estimation unit 514 estimates that there is a member that generates heat in the detection target regions of the temperature detectors 258, 328, and 378 ( Step S105). Thus, one estimation process by the temperature estimation unit 514 is completed.

  As a result of the above estimation, it has been found that there is a member that generates heat inside the single-lens reflex camera 100, so that the estimated environmental temperature can be corrected. In addition, when the control unit 501 knows that a member capable of generating heat, for example, the DC / DC converter 326, the image pickup device 370, or the like is operating, the member that is operating is included in the temperature detection region. By estimating the environmental temperature by excluding the temperature information based on the detection results of the temperature detectors 328 and 378, the influence of the member that generates heat can be eliminated from the estimation result.

  FIG. 5 is a flowchart showing another estimation procedure in the temperature degree temperature estimation unit 514. In this estimation procedure, the temperature estimation unit 514 first extracts a minimum value from a plurality of input temperature information (step S201). Further, the average value of the detected temperatures is calculated from the plurality of input temperature information.

  Next, the temperature estimation unit 514 calculates the difference between the minimum value and the average value (step S202). Subsequently, the temperature estimation unit 514 compares the calculated difference with a threshold value set in advance for the difference (step S203). Here, the predetermined threshold value can be a threshold value for distinguishing whether or not the difference is a significant value.

  When the difference is smaller than the threshold value in step S203 (step S203: NO), the temperature estimation unit 514 does not have a member that actively performs a cooling operation in the detection target regions of the temperature detectors 258, 328, and 378. (Step S204). When the difference is larger than the threshold value in step S203 (step S203: YES), the temperature estimation unit 514 estimates that there is a cooling member in the detection target region of the temperature detectors 258, 328, and 378 ( Step S205). Thus, one estimation process by the temperature estimation unit 514 is completed.

  From the above estimation, it can be seen that a member that actively cools inside the single-lens reflex camera 100, such as a cooling fan, a Peltier effect element, and the like. Thereby, the estimated environmental temperature can be corrected. When the control unit 501 knows that the member to be cooled is operating, the environmental temperature is estimated by removing the temperature information obtained from the temperature detector having the member in the temperature detection region. Therefore, the influence of the member to be cooled can be eliminated.

  In addition to the above example, the temperature estimation unit 514 can execute various estimation processes. For example, when it is estimated that there is a member that generates heat by the estimation process shown in FIG. 4 and there is a member that cools by the estimation process shown in FIG. Therefore, the average value of all temperature information can be estimated as the environmental temperature. Similarly, when it is estimated that neither a member that generates heat nor a member that cools is present, the average value of the temperature information can be estimated as the environmental temperature.

  When it is determined that there is no member that generates heat, the maximum value of the plurality of temperature information can be estimated as the environmental temperature. Similarly, when it is determined that there is no member to be cooled, the lowest value of the plurality of temperature information can be estimated as the environmental temperature.

  In addition, when it is determined that there is a member that generates heat, and the member that generates heat is known, temperature information provided from the temperature detector having the member in the detection region is excluded, and another temperature detector The average value of the temperature information from may be estimated as the environmental temperature. Similarly, when it is determined that there is a member to be cooled and the member to be cooled is known, the temperature information provided from the temperature detector having the member in the detection region is excluded, and other temperature detection is performed. The average value of the temperature information from the vessel may be estimated as the environmental temperature.

  As described above, the temperature estimation unit 514 can estimate the environmental temperature with high accuracy by calculating the minimum temperature, the maximum temperature, and the average temperature from the obtained plurality of temperature information and examining the three relationships. The estimated environmental temperature is used for operation control of various members such as the actuator 252, the DC / DC converter 326, and the image sensor 370 having temperature characteristics.

  Further, by estimating the environmental temperature, the control unit 501 can execute control for compensating the temperature characteristics of a certain element with other elements. For example, when the environmental temperature decreases and the discharge characteristics of the battery deteriorate, the drive characteristics of an element that consumes a large amount of power, such as the actuator 252, can be changed to compensate for the discharge characteristics of the battery. Therefore, even when the battery does not include a temperature detector or when the control unit 501 cannot refer to the output of the battery temperature detector, the temperature characteristics of the battery can be compensated.

  FIG. 6 is a graph illustrating an example of control executed by the control unit 501 using the estimated environmental temperature. In FIG. 6, temperature information A is acquired from a temperature detector 328 that includes a DC / DC converter 326 in the detection target region. Further, the temperature information B is acquired from a temperature detector 258 including the actuator 252 in the detection target region. Further, the temperature information C is acquired from another temperature detector disposed at a position distant from any of the temperature detectors 328 and 258.

  In FIG. 6, the control signal A represents a transition of the drive signal of the DC / DC converter 326. Further, the control signal B indicates a transition of the drive signal of the actuator 252.

When the drive signal of the DC / DC converter 326 to the timing _{P 1} is changed to an on, with the operation of the DC / DC converter 326, the value of the temperature information A is raised. Then, when the drive signal of the DC / DC converter 326 to the timing _{P 2} is changed to off, the value of the temperature information A drops. Therefore, when the control unit 501 grasps the state of the control signals A, a period from the timing P ₁ to the timing P ₂ may be removed temperature information A from the estimation of the environmental temperature.

  When the control unit 501 does not grasp the operation of the DC / DC converter 326, the operation of the DC / DC converter 326 can be estimated based on the change in the temperature information A. In addition, when there are a plurality of members that generate heat in the detection target region of the temperature detector 328, the member to be operated may be estimated based on the shape of a curve indicating a change in the temperature information A.

When the drive signal of the DC / DC converter 326 is turned on at timing P ₃ , the value of the temperature information B increases with the operation of the actuator 252. Then, when the drive signal of the actuator 252 to the timing P ₄ is shifted to OFF, the value of the temperature information B drops. Therefore, when the control unit 501 grasps the state of the control signal B, the period from the timing P ₃ to the timing P ₄ can be eliminated temperature information B from the estimation of the environmental temperature.

  When the control unit 501 does not grasp the operation of the actuator 252, the operation of the actuator 252 can be estimated based on the change in the temperature information B. In addition, when there are a plurality of members that generate heat in the detection target region of the temperature detector 258, the member to be operated may be estimated based on the shape of a curve indicating a change in the temperature information B.

Further, the control unit 501 may set the threshold values T ₁ and T ₂ and execute control based on the temperature information A, B, and C. That is, more than the timing _{P 5,} temperature information A, B, all C is the threshold _{T 1.} In such a case, the control unit 501 changes all the drive signals to OFF and prohibits them from being turned ON.

  In this way, the control unit 501 operates the entire single-lens reflex camera 100 when temperature information obtained from all temperature detectors or a part of temperature detectors specified in advance exceeds a predetermined threshold. May be prohibited. Thereby, the control unit 501 prevents the temperature of the single-lens reflex camera 100 from further rising.

Incidentally, the timing P _6, temperature information A, B, if all C is lower than the threshold value T _2, the control unit 501 may cancel the prohibition of the drive signal. Also, before the temperature information of all temperature detectors showed a high value, at the stage where some temperature detectors showed a high value, it was placed in the detection target area of the temperature detector that outputs high temperature information The member may be instructed to stop.

  FIG. 7 is a block diagram of the temperature detection unit 402. Elements common to the temperature detection unit 401 shown in FIG. 2 are assigned the same reference numerals, and redundant descriptions are omitted.

  The temperature detection unit 402 includes a synthesizer 323 that receives detection temperatures output from the plurality of temperature detectors 258, 328, and 378. The combiner 323 combines the analog signals output from the plurality of temperature detectors 258, 328, and 378 into a single detected temperature signal. The output of the synthesizer 323 is digitally converted by a single analog / digital converter 321 and then acquired as single temperature information by the control unit 502.

  FIG. 8 is a block diagram of the control unit 502 that receives the single temperature information generated as described above. The single temperature information acquired by the control unit 501 has a value proportional to an average value obtained by averaging the temperature information individually acquired from the plurality of temperature detectors 258, 328, and 378. Therefore, in the control unit 501, the temperature estimation unit 514 can control the driving unit 516 without the process of calculating the average value.

  In addition, as described above, a system for digitally converting the detected temperatures output from the plurality of temperature detectors 258, 328, and 378 into one after combining them, and a system for individually converting the digital temperatures as shown in FIG. May be provided in parallel. Even in this case, the load of the temperature estimation unit 514 that calculates the average value of the plurality of temperature information can be reduced.

  FIG. 9 is a circuit diagram showing a more specific structure of the temperature detection unit 402. As shown in the figure, the temperature detection unit 402 divides the voltage between one end of a plurality of temperature detectors 258, 328, and 378 that are, for example, thermistors and the ground potential, and then collectively inputs the analog / digital converter 321. Is bound to. Thereby, it is possible to cause the control unit 501 to acquire average temperature information with a simple structure. Therefore, the load on the control unit 501 can be reduced.

  The camera system provided with the plurality of temperature detectors 258, 328, and 378 is not limited to the single-lens reflex camera 100 in which the lens unit 200 and the camera body 300 are combined, but a lens interchangeable mirrorless camera and a lens fixed compact. It can also be formed in a camera or the like. Further, it may be a type such as firmware or adapter added to an existing camera system including a plurality of temperature detectors.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

  In addition, the execution order of each process such as operation, procedure, step, and stage in the apparatus, system, program, and method shown in the claims, the specification, and the drawings is particularly “before”, “ It should be noted that “precedent” or the like is not specified, and that the output of the previous process can be realized in any order unless it is used in the subsequent process. Regarding the operation flow in the claims, the description, and the drawings, even if it is described using “first”, “next”, etc. for convenience, it does not mean that it is essential to carry out in this order. Absent.

100 single lens reflex camera, 200 lens unit, 220, 230, 240 lens, 250 lens side control unit, 252 actuator, 258, 328, 378 temperature detector, 260 fixed cylinder, 262 lens side mount unit, 300 camera body, 310 shutter Device, 320 Main board, 321 Analog / digital converter, 322 Body side control unit, 323 Synthesizer, 324 Image processing unit, 326 DC / DC converter, 330 Rear display unit, 340 Finder, 342 Finder optical system, 344 Penta Prism, 346 Focusing screen, 350 Photometric sensor, 360 Housing, 362 Body side mount, 370 Image sensor, 372 Optical filter, 380 Mirror unit, 381 Main mirror holding frame, 382 Main mirror , 383 Main mirror rotation axis, 384 Positioning pin, 385 Sub mirror holding frame, 386 Sub mirror, 387 Sub mirror rotation axis, 388 Buffer member, 390 Focusing optical system, 392 Focus position sensor, 401, 402 Temperature detection unit, 501 , 502 control unit, 512 comparator, 514 temperature estimation unit, 516 drive unit

Claims (8)

A camera system that captures a subject image and generates image data,
An operating part that operates when imaging with operating characteristics according to the environmental temperature;
A housing for housing the operating unit;
A plurality of temperature detectors for detecting temperatures of different detection target areas in the housing;
A temperature estimation unit that estimates the environmental temperature based on temperatures detected by the plurality of temperature detection units;
A camera system comprising: a control unit that controls the operation unit based on the environmental temperature estimated by the temperature estimation unit.   The camera system according to claim 1, wherein the temperature estimation unit estimates the environmental temperature in an estimation target region different from any of the detection target regions of the plurality of temperature detection units.   The camera system according to claim 1, wherein the temperature estimation unit estimates an average value of temperatures detected in the detection target region by the plurality of temperature detection units as the environmental temperature.   The camera system according to claim 1, wherein the temperature estimation unit estimates the lowest temperature detected by the plurality of temperature detection units in the detection target region as the environmental temperature.   The temperature estimation unit estimates an environmental temperature using another temperature detection unit when the detection target region includes a known heating element among the plurality of temperature detection units. The camera system according to any one of the above.   The said control part estimates that the components contained in the said detection object area | region of the said temperature detection part are operate | moving based on the temperature which one of these temperature detection parts detected. The camera system according to any one of 5 to 5.   The said control part controls operation | movement of the components contained in the said detection object area | region of the temperature detection part which detected high temperature among these temperature detection parts. The camera system described. A control program for controlling a camera system including a housing that has an operation unit that operates when an object image is captured with an operation characteristic corresponding to an environmental temperature,
A temperature detection step of detecting a temperature by a plurality of temperature detection units for detecting temperatures of different detection target regions in the housing; and
A temperature estimation step of estimating the environmental temperature based on the temperatures detected by the plurality of temperature detection units;
The control program which makes a computer perform the control step which controls the said operation | movement part based on the said environmental temperature estimated in the said temperature estimation step.

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