JP2012239079A - Photographing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide technique of a digital camera capable of calculating the dimensions and mass of a subject and recording it in association with image data on the subject.SOLUTION: The digital camera provided with a photographing lens first calculates a subject distance (S35), and calculates the dimensions of the subject on the basis of the calculated subject distance, the focal distance of the photographing lens, and image data on the subject (S37). Next, the digital camera displays a UI control for selection of the type of the subject on a monitor (S45) to allow a photographer to select the type of the subject. Furthermore, the digital camera calculates the mass of the subject on the basis of the calculated dimensions of the subject and the selected type of the subject (S47) and records the image data with the mass and dimensions of the subject (S53).

Description

  The present invention relates to a technique of a photographing apparatus, and more particularly to a technique of a digital camera.

  In the field of cameras, conventionally, there is known a technique for grasping a photographed subject in more detail by displaying related information together with an image of the subject that is a photographing target. Such a technique is disclosed in Patent Document 1, for example.

  Japanese Patent Application Laid-Open No. 2004-228688 discloses a camera technology that records a scale having a reference length together with a subject on a film. According to the technique disclosed in Patent Document 1, the size of the subject can be grasped by comparing the scale displayed on the photograph with the subject.

  Patent Document 2 discloses a technique of a digital camera that records a subject distance and a focal length on a recording medium in association with subject image data. According to the technique disclosed in Patent Document 2, an actual distance between two points can be calculated by designating two points on a screen on which an image is displayed. Therefore, the size of the subject can be calculated by specifying both ends of the subject and displayed on the screen.

Japanese Patent Laid-Open No. 7-295064 Japanese Patent Laid-Open No. 2004-40689

  By the way, in Patent Document 1 and Patent Document 2 described above, information for grasping the size of the subject is displayed, but there are various types of information that contributes to grasping the subject other than the size of the subject. . For example, one of them is the mass of the subject.

  The mass of the subject is a main index indicating the characteristics of the subject together with the size of the subject, but it is not easy to guess from the image of the subject. For this reason, displaying the mass of the subject on the screen is very effective for grasping the subject.

  However, in Patent Document 1 and Patent Document 2 described above, since the mass of the subject is not calculated, the mass of the subject is not recorded on the recording medium. Therefore, when the image data is reproduced and the image is displayed, the mass of the subject cannot be displayed on the screen together with the image of the subject.

  In view of the above circumstances, an object of the present invention is to provide a technique of an imaging apparatus that can calculate the size and mass of a subject and record it in association with image data of the subject.

  According to a first aspect of the present invention, there is provided a photographing apparatus including a photographing lens, an imaging unit that photoelectrically converts a light beam from a subject to repeatedly acquire image data, a ranging unit that calculates a subject distance, Length measuring means for calculating the size of the subject based on the focal length of the photographing lens, the subject distance calculated by the distance measuring means, and the image data acquired by the imaging means, and the type of the subject The subject mass selection means for causing the user to input, the size of the subject calculated by the length measurement means, and the subject type selected by the subject type selection means, the mass of the subject Mass calculating means for calculating the image data, the image data acquired by the imaging means, the size of the subject calculated by the length measuring means, and the mass calculating means. And the mass of the object that is, a recording means for recording on a recording medium in association with, to provide an imaging apparatus including a.

  According to a second aspect of the present invention, in the photographing apparatus according to the first aspect, the mass calculation unit further includes storage means for storing a subject mass corresponding to the type of the subject and the size of the subject. An imaging device that calculates the mass of the subject with reference to the storage unit based on the type of the subject selected by the subject type selection unit and the size of the subject calculated by the length measurement unit. provide.

  According to a third aspect of the present invention, in the photographing apparatus according to the first aspect or the second aspect, the image capturing apparatus further includes release instruction means for instructing a photographing operation, and the release instruction means is in the first operation state. Sometimes, the distance measuring means calculates the subject distance, the length measuring means calculates the size of the subject, and the subject type selection is performed when the release instruction means is in the second operation state. The means detects the type of the subject selected by the user, and the mass calculation means provides an imaging apparatus for calculating the mass of the subject.

  According to a fourth aspect of the present invention, in the photographing apparatus according to the first aspect or the second aspect, the image capturing apparatus further includes release instruction means for instructing a photographing operation, and the release instruction means is in the first operation state. Sometimes, the distance measuring means calculates the subject distance, and when the release instruction means is in the second operation state, the length measuring means calculates the size of the subject and selects the subject type. The means detects the type of the subject selected by the user, and the mass calculation means provides an imaging apparatus for calculating the mass of the subject.

  According to a fifth aspect of the present invention, in the photographing apparatus according to the third aspect or the fourth aspect, the release instruction means is a release button, and the first operation state is a half-press of the release button. And the second operation state provides a photographing apparatus in which the release button is fully pressed.

  According to a sixth aspect of the present invention, in the photographing apparatus according to any one of the first to fifth aspects, the image data of the subject recorded on a recording medium by the recording unit is further displayed. The image capturing apparatus includes a display unit, and the display unit displays the size of the subject and the mass of the subject stored in association with the image data of the subject so as to overlap the image data of the subject.

  According to a seventh aspect of the present invention, in the photographing apparatus according to the sixth aspect, the display unit displays a selection screen for selecting the type of the subject, and the subject type selection unit includes the display unit. An imaging device for detecting the type of the subject selected by the user from the types of subjects displayed on the screen is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the technique of the imaging device which can calculate a magnitude | size and mass of a to-be-photographed object and can link | related and record with the image data of a to-be-photographed object can be provided.

1 is an external perspective view of a digital camera that is a photographing apparatus according to a first embodiment when viewed from the back side. 1 is a block diagram illustrating an overall configuration mainly including an electric system of a digital camera according to Embodiment 1. FIG. 3 is a flowchart illustrating an operation after a power-on reset of the digital camera according to the first embodiment. 3 is a flowchart illustrating a shooting operation of the digital camera according to the first embodiment. FIG. 3 is a diagram illustrating a shooting target of the digital camera according to the first embodiment. FIG. 3 is a diagram illustrating an example of a distance measuring method using a digital camera according to the first embodiment. FIG. 6 is a diagram illustrating an example of selection of a subject type by the digital camera according to the first embodiment. 6 is a diagram illustrating an example of a master data table of the digital camera according to Embodiment 1. FIG. 6 is a diagram illustrating an example of data recorded in association with image data by the digital camera according to Embodiment 1. FIG. 6 is a diagram illustrating an example of a screen for reproducing image data by the digital camera according to Embodiment 1. FIG. FIG. 6 is a diagram for explaining a measurement direction of a subject size calculated by the digital camera according to the first embodiment. 6 is a diagram illustrating another example of selection of the type of subject by the digital camera according to Embodiment 1. FIG. FIG. 6 is a diagram illustrating another example of a screen for reproducing image data by the digital camera according to the first embodiment. 6 is a diagram illustrating an example of a master data registration screen of the digital camera according to Embodiment 1. FIG. FIG. 15 is a diagram illustrating an example of an input screen displayed after each text box on the master data registration screen illustrated in FIG. 14. FIG. 6 is a diagram illustrating an example in which the subject size calculated by the digital camera according to the first embodiment is determined to be “body length”. FIG. 6 is a diagram illustrating an example in which the subject size calculated by the digital camera according to the first embodiment is determined to be “body height”. 10 is a flowchart illustrating an operation after a power-on reset of the digital camera according to the second embodiment. 6 is a flowchart illustrating a shooting operation of the digital camera according to the second embodiment.

  The configuration of the digital camera according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is an external perspective view of a digital camera that is a photographing apparatus according to the present embodiment as viewed from the back side. FIG. 2 is a block diagram showing the overall configuration mainly of the electrical system of the digital camera according to the first embodiment shown in FIG.

First, an external configuration of the digital camera according to the present embodiment will be described with reference to FIG.
As shown in FIG. 1, the digital camera 1 according to this embodiment includes an interchangeable lens 100 and a camera body 200, and the interchangeable lens 100 is a mount opening (not shown) provided on the front surface of the camera body 200. It is detachable.

  On the upper surface of the camera body 200, a mode dial 54 for setting a shooting mode, a release button 56 for instructing shooting, and a power button 57 for switching a power supply state are arranged.

  The mode dial 54 is a rotatable dial for the user to set the shooting mode, and has clicks at several places. By rotating the mode dial 54 and changing the click position, the photographing mode of the digital camera 1 can be set to a desired mode. The mode dial 54 is connected to the shooting mode switch 254 shown in FIG.

  The release button 56 is a button for the user to give an instruction to shoot. By the user's operation, the states are at least an initial state, a half-pressed state (first operation state), and a fully-pressed state (second state). To switch between (operating state). The release button 56 is connected to a 1st release switch 256a (hereinafter referred to as a 1R switch) and a 2nd release switch 256b (hereinafter referred to as a 2R switch) shown in FIG. The 1R switch 256a is turned on when the release button 56 is half-pressed, and the 2R switch 256b is turned on when the release button 56 is fully pressed.

  The power button 57 is a button for controlling the supply of power to the digital camera 1, and is connected to the power switch 257 shown in FIG. The power button 57 can switch the power switch 257 between an on state and an off state. When the power switch 257 is turned on, power is supplied to the entire camera, and the digital camera 1 starts operating. On the other hand, when the power switch 257 is turned off, the digital camera 1 operates in a low current consumption mode (also referred to as a sleep mode). In the low current consumption mode, the sequence controller (hereinafter referred to as “body CPU”) 229 shown in FIG. 2 is driven with low current consumption, and the switch detection circuit 253 shown in FIG. Does not detect state. In the low current consumption mode, power is not supplied to other than a predetermined circuit such as the switch detection circuit 253.

  On the back of the camera body 200, a rear liquid crystal monitor 26 and various buttons (reduction button 11, enlargement button 12, playback button 13, menu button 14, cross button 15, decision button 16, edit button 17, etc.) are arranged. Yes.

  As the display on the liquid crystal back monitor 26, various displays such as a live view display, a reproduction display of a recorded photographed image, and a menu screen display can be selected. A touch panel 236 shown in FIG. 2 is placed on the display surface of the rear liquid crystal monitor 26 so that the rear liquid crystal monitor 26 functions not only as a display unit but also as an operation unit.

  The reduction button 11 and the enlargement button 12 are operation members for enlarging or reducing an image displayed on the rear liquid crystal monitor 26. The reproduction button 13 is an operation member for reproducing and displaying a recorded photographed image. The menu button 14 is an operation member for displaying a menu screen. The cross button 15 is an operation member for moving a cursor or the like back and forth. The determination button 16 is an operation member for determining an item selected by the cross button 15 or the like.

Next, the overall configuration of the digital camera 1 mainly including the electrical system will be described with reference to FIG.
In the digital camera 1, an incident light beam incident on the interchangeable lens 100 detachably attached to a mount opening (not shown) on the front surface of the camera body 200 is guided into the camera body 200 through the mount opening. When the interchangeable lens 100 is attached to the camera body 200, the interchangeable lens 100 and the camera body 200 are electrically connected through the communication contact 300. An attachment / detachment detection switch 259 is provided in the vicinity of the mount opening of the camera body 200, and the digital camera 1 can detect the attachment state of the interchangeable lens 100 and the camera body 200 by the attachment / detachment detection switch 259. .

  Inside the interchangeable lens 100, a photographing optical system 101 (photographing lens 101a and photographing lens 101b) for adjusting the focal length and focal length, and a diaphragm 103 for adjusting the aperture amount are arranged. The photographing optical system 101 is driven by an optical system driving mechanism 107, and the diaphragm 103 is driven by an aperture driving mechanism 109. The optical position detection mechanism 105 detects the position of the photographing optical system 101 driven by the optical system driving mechanism 107, and detects the focus adjustment lens position (focus position) and the focal length (zoom position) of the photographing optical system 101. . A rotatable distance ring 112 is provided around the interchangeable lens 100, and the rotation direction (operation direction) and the rotation amount (operation amount) of the distance ring 112 are detected by the encoder 110. The optical position detection mechanism 105, the optical system drive mechanism 107, the aperture drive mechanism 109, and the encoder 110 are each connected to the lens CPU 111. The lens CPU 111 is connected to the camera body 200 via the communication contact 300.

  The lens CPU 111 controls the inside of the interchangeable lens 100. The lens CPU 111 controls the optical system driving mechanism 107 as a focusing unit to perform focusing and zoom driving, and controls the aperture driving mechanism 109 to control the aperture value. I do. In addition, the lens CPU 111 transmits lens information regarding the focus adjustment lens position (focus position) and the focal length detected by the optical position detection mechanism 105 to the camera body 200.

  In addition, an electrically rewritable nonvolatile memory (not shown) is provided in the lens CPU 111 or the interchangeable lens 100, and the nonvolatile memory includes focal length information (in the case of a zoom lens) of the interchangeable lens 100. , Shortest focal length and longest focal length), maximum aperture value, minimum aperture value, shootable distance range (including the shortest distance), lens color balance information, aberration information, information for AF, macro lens and teleconverter The lens information such as the lens type and the like is stored. The lens information also includes information regarding the state of the interchangeable lens 100 such as the aperture state of the aperture (whether the aperture is in the open aperture state or the aperture state), the operation state of the distance ring 112 (operation direction, operation amount), and the like. Such lens information is also transmitted from the lens CPU 111 to the camera body 200 via the communication contact 300. Further, the lens CPU 111 also transmits information to the camera body 200 indicating completion of aperture stop completion or aperture opening completion by the aperture drive mechanism 109 and lens drive completion by the optical system drive mechanism 107.

  A focal plane type shutter 203 is disposed on the photographing optical path in the camera body 200 that coincides with the optical axis of the photographing optical system 101. The shutter 203 is driven and controlled by a shutter drive mechanism 213 and is used for exposure time control and light shielding of the image sensor 221.

  An image sensor unit 290 is disposed behind the shutter 203. The image pickup device unit 290 is a unit in which the dustproof filter 205, the infrared cut filter 209, the optical low-pass filter 210, and the image pickup device 221 are integrally formed. The image pickup device unit 290 is integrally housed in a sealed package so that dust does not enter. Yes. The image sensor unit 290 is displaced two-dimensionally within an XY plane perpendicular to the optical axis of the photographing optical system 101 by the blur correction mechanism 260.

  The blur correction mechanism 260 includes an actuator composed of a piezoelectric element drive motor or the like as a drive source, and displaces the image sensor unit 290 two-dimensionally within an XY plane perpendicular to the optical axis of the photographing optical system 101. In the camera body 200, a blur detection unit 297 configured by an angular velocity sensor 297a using a gyro and an angular velocity detection circuit 297b is disposed. The angular velocity sensor 297a is connected to the angular velocity detection circuit 297b and outputs a blur signal corresponding to the blur generated in the camera body 200 to the angular velocity detection circuit 297b. The angular velocity detection circuit 297b amplifies the blur signal, performs AD conversion, and then outputs it to the body CPU 229. Based on the shake signal detected by the shake detection means 297, the body CPU 229 outputs a shake control signal that cancels out the shake of the camera body 200 to the actuator drive circuit 296. The actuator drive circuit 296 includes the shake correction drive mechanism 260. A drive signal is output to the actuator inside. The blur correction drive mechanism 260 that has received the drive signal moves the image sensor 221 in a direction perpendicular to the optical axis of the imaging optical system 101. As a result, an image sensor shift type camera shake correction operation that cancels blurring applied to the camera body 200 and prevents image deterioration is executed.

  The dustproof filter 205 constituting the image sensor unit 290 disposed behind the shutter 203 prevents the dust generated in the mount opening of the camera body 200 and the camera body 200 from adhering to the image sensor 221 and the optical element. . Thereby, it is possible to prevent the optical image in which the shadow of the dust is captured from being imaged.

  A piezoelectric element 207 is fixed to the entire circumference or a part of the peripheral edge of the dust filter 205. The piezoelectric element 207 is connected to a dustproof filter drive circuit 211. The piezoelectric element 207 vibrates the dust filter 205 with ultrasonic waves of a predetermined frequency based on the drive signal of the dust filter drive circuit 211. As the dust filter 205 vibrates with ultrasonic waves, dust attached to the front surface of the dust filter 205 is removed.

  An infrared cut filter 209 for cutting the infrared light component from the incident light beam is disposed behind the dust filter 205. Further, an optical low-pass filter 210 for removing high-frequency components from the incident light beam is disposed behind the optical flux. Then, the image sensor 221 disposed behind the optical low-pass filter 210 photoelectrically converts the optical image formed by the photographing optical system 101 into an analog image signal. As the image sensor 221, a two-dimensional solid-state image sensor such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) can be used.

  The image sensor 221 is connected to the image sensor drive circuit 223, and the image sensor drive circuit 223 is driven and controlled by a control signal from the input / output circuit 239. The image sensor driving circuit 223 reads an analog image signal from the image sensor 221, amplifies this signal, and performs analog-digital conversion (AD conversion) or the like. The output of the image sensor driving circuit 223 is transmitted to the preprocessing circuit 225, and various preprocessing such as pixel thinning processing for live view display is performed in the preprocessing circuit 225.

  The preprocessing circuit 225 is connected to the contrast AF circuit 226. The contrast AF circuit 226 extracts a high frequency component (contrast signal) of the image signal output from the preprocessing circuit 225. Note that an instruction from the body CPU 229 is received regarding the range of the image from which the contrast signal is extracted. The contrast AF circuit 226 extracts a contrast signal from an area such as an AF target, the entire photographing screen, or an enlarged display area in accordance with an instruction from the body CPU 229. The extracted contrast signal is output to the body CPU 229.

  The preprocessing circuit 225 is also connected to a data bus 261 in an ASIC (Application Specific Integrated Circuit) 262. The data bus 261 includes an image processing circuit 227, a body CPU 229, a compression / decompression circuit 231, a video signal output circuit 233, an SDRAM control circuit 237, an input / output circuit 239, a communication circuit 241, a recording medium control circuit 243, and a flash memory control circuit 247. The switch detection circuit 253 is connected. 2 shows an example in which the contrast AF circuit 226 is disposed outside the ASIC 262, the contrast AF circuit 226 may be disposed in the ASIC 262. In addition, a wireless communication unit may be connected to the data bus 261.

  An image processing circuit 227 connected to the data bus 261 performs digital amplification (digital gain adjustment processing), color correction (white balance correction), gamma (γ) correction, and digital image data output from the preprocessing circuit 225. Various image processing such as contrast correction, monochrome / color mode processing, live view display processing, and processing for extracting pixel data having a predetermined gradation value or more are performed. Further, the image processing circuit 227 may perform an image composition process for composing a plurality of image data. Further, the image processing circuit 227 also performs face detection processing and processing for determining the luminance distribution and saturation of the image data. The face detection process is a process for determining whether or not a face portion is included in an image using image data, and if it is included, determining the position and size of the face. The hardware may be used.

  The body CPU 229 connected to the data bus 261 controls the operation of the digital camera 1 according to a program stored in the flash memory 249. Further, as described above, the body CPU 229 controls the automatic focus adjustment of the photographing optical system 101 via the lens CPU 111 based on the contrast signal from the contrast AF circuit 226.

  The compression / decompression circuit 231 connected to the data bus 261 compresses the image data stored in the SDRAM 238 using JPEG or TIFF. The image compression method is not limited to JPEG or TIFF, and other compression methods can be applied.

  A video signal output circuit 233 connected to the data bus 261 is connected to a rear liquid crystal monitor 26 and a finder liquid crystal monitor (abbreviated as F liquid crystal monitor in the figure) 29 via a liquid crystal monitor drive circuit 235. The video signal output circuit 233 converts the image data stored in the SDRAM 238 or the recording medium 245 into a video signal to be displayed on the rear liquid crystal monitor 26 and / or the finder liquid crystal monitor 29.

  As described above, the touch panel 236 is overlaid on the rear liquid crystal monitor 26. As shown in FIG. 1, the rear liquid crystal monitor 26 is disposed on the rear surface of the camera body 200, but is not limited to the rear surface as long as the photographer can observe it. The digital camera 1 may be provided with another display device such as an organic EL instead of the rear liquid crystal monitor 26. The in-viewfinder liquid crystal monitor 29 is arranged at a position where the photographer can observe through the viewfinder eyepiece. Similar to the rear liquid crystal monitor 26, the digital camera 1 may be provided with another display device such as an organic EL instead of the in-finder liquid crystal monitor 29. The digital camera 1 may be provided with only the liquid crystal monitor 26 for observing the subject image, and the viewfinder eyepiece and the viewfinder liquid crystal 29 may be omitted.

  The SDRAM 238 is connected to the data bus 261 via the SDRAM control circuit 237. The SDRAM 238 is a buffer memory for temporarily storing the image data processed by the image processing circuit 227 or the image data compressed by the compression / decompression circuit 231.

  The input / output circuit 239 is connected to the above-described dustproof filter drive circuit 211, shutter drive mechanism 213, and image sensor drive circuit 223. The input / output circuit 239 controls data input / output between these circuits or mechanisms and each circuit such as the body CPU 229 via the data bus 261.

  The communication circuit 241 is connected to the lens CPU 111 via the communication contact 300. Further, the data bus 261 is also connected. The communication circuit 241 mediates data exchange and control command communication between the lens CPU 111 and the body CPU 229.

  A recording medium control circuit 243 connected to the data bus 261 is connected to the storage medium 245 and controls recording and reproduction of image data and the like on the recording medium 245. The recording medium 245 is a rewritable recording medium such as a compact flash (registered trademark), an SD memory card (registered trademark), or a memory stick (registered trademark), and is detachable from the camera body 200. Yes. In addition, a hard disk unit such as a microdrive (registered trademark) may be used as the recording medium 245.

  The flash memory control circuit 247 connected to the data bus 261 is connected to a flash memory 249. The flash memory 249 is an electrically rewritable nonvolatile memory, and stores a program for controlling the operation of the camera, an adjustment value for control, master data to be described later, and the like. The body CPU 229 controls the digital camera 1 in accordance with programs, adjustment values, etc. stored in the flash memory 249.

  The switch detection circuit 253 connected to the data bus 261 includes a shooting mode switch 254, a 1R switch 256a, a 2R switch 256b, a power switch 257, an attachment / detachment detection switch 259, various other switches 255, a touch panel 236, and a vertical / horizontal posture detection sensor. H.258.

  The shooting mode switch 254 is a switch connected to the mode dial 54 shown in FIG. 1 and is used for switching the shooting mode. The 1R switch 256a and the 2R switch 256b are switches connected to the release button 56 shown in FIG. 1. The 1R switch 256a is turned on when the release button 56 is half-pressed, and the 2R switch 256b is set to all the release buttons 56. Press to turn on. The power switch 257 is a switch connected to the power button 57 shown in FIG. 1 and controls the power supply to the camera body 200 and the interchangeable lens 100. Other various switches 255 include a switch linked to the playback button 13 for instructing a playback mode, a switch linked to the cross button 15 for instructing the movement of the cursor displayed on the screen of the rear liquid crystal monitor 26, and the like. The switch etc. which interlock | cooperate with the decision button 16 which decides each selected mode etc. are contained.

  Note that the shooting mode is a combination of an exposure mode, an AF mode, and the like, and is selected to set an aperture value, a shutter speed, and the like. In the digital camera 1, as a shooting mode, a program mode (P) for determining exposure based on a program diagram, an aperture priority mode (AV), a shutter speed priority mode (SS), a manual exposure mode (M), and auto left for the camera. Mode (AUTO), portrait mode suitable for portrait photography with blurred background, sport mode that easily follows fast movements, night view mode that exposes people for a long time and proper exposure, and landscape mode suitable for long-distance subjects Is provided. In addition, there are various shooting modes that make use of the subject's features. The shooting mode can be selected from the menu screen in addition to the mode dial 54.

  Further, the camera body 200 is provided with a light emitting circuit 298, a strobe light emitting unit 299a and an LED light emitting unit 299b connected to the light emitting circuit 298. The light emitting circuit 298 is composed of a charging circuit for charging a light emitting capacitor (not shown) and a light emission control circuit, and starts charging the light emitting capacitor in accordance with a charging signal from the body CPU 229. When the charging is completed, the body CPU 229 is completed. Notify the end of charging. The body CPU 229 that has received the notification of the completion of charging outputs a light emission instruction to the light emitting circuit 298 when the object field luminance of the subject is equal to or lower than a predetermined value. The strobe light emitting unit 299a composed of The light emitting circuit 298 can cause the LED light emitting unit 299b to emit light at an arbitrary timing in accordance with an instruction from the body CPU 229.

  Next, the operation of the digital camera 1 configured as described above will be described with reference to FIGS. FIG. 3 is a flowchart showing the operation after the power-on reset of the digital camera 1. FIG. 4 is a flowchart showing the photographing operation of the digital camera 1. FIG. 5 is a diagram illustrating an object to be photographed by the digital camera 1. FIG. 6 is a diagram illustrating an example of a distance measuring method using the digital camera 1. FIG. 7 is a diagram illustrating an example of selection of the type of subject by the digital camera 1. FIG. 8 is a diagram illustrating an example of a master data table of the digital camera 1. FIG. 9 is a diagram illustrating an example of data recorded by the digital camera 1 in association with image data. FIG. 10 is a diagram illustrating an example of a playback screen of the digital camera 1.

First, the operation of the digital camera 1 will be outlined with reference to FIG.
When a battery is loaded in the camera body 200 or an external power supply is connected, the body CPU 229 executes a program stored in the flash memory 249 and performs the following processing. First, it is determined whether or not the power switch 257 of the camera body 200 is on (step S1). If the result of determination is that the power switch 257 is in the off state, the digital camera 1 transitions to a sleep state, which is a low power consumption state (step S3). This sleep state is canceled when the power switch 257 changes from the off state to the on state. On the other hand, if the result of determination in step S1 is that the power switch 257 is in the on state, or if the sleep state in step S3 is released, power supply is started (step S5). Thereby, electric power is supplied to each mechanism, each circuit, etc. in the camera body 200 and the interchangeable lens 100.

  In step S7, lens information is acquired. Specifically, focal position information and focal length information of the photographing optical system 101 detected by the optical position detection mechanism 105 are acquired from the lens CPU 111 via the communication circuit 241. Various interchangeable lenses such as close-up focal length and long focal length, open aperture value, exposure correction value for each focal length, peripheral light amount correction value (shading), peripheral color correction value, distortion aberration correction value, etc. Lens information such as 100 unique information is acquired. It also acquires information about accessories related to lenses such as intermediate rings and teleconverters, and detects the presence or absence of such accessories.

  In step S9, an operation mode and parameter setting are performed. If there is information such as the shooting mode set by the mode dial 54, ISO sensitivity, and manually set shutter speed and aperture value, those shooting conditions are read and set.

  In step S11, a live view operation for displaying the subject image as a moving image on the rear liquid crystal monitor 26 based on the image signal from the image sensor 221 is started to observe the subject image. When the live view operation is started, first, photometry / exposure amount is calculated (step S13). Specifically, the field luminance is obtained based on a signal output from the image sensor 221 and taken into the image sensor drive circuit 223. An exposure control value such as a shutter speed and an aperture value at which proper exposure is performed for live view display is calculated from the obtained field luminance, shooting mode, and shooting conditions. Then, a live view operation is performed based on the calculation result in step S13 (step S15). That is, an image is acquired according to the calculation result, and the image on the rear liquid crystal monitor 26 is updated.

  As will be described later, when the power switch 257 is in the on state in step S23, the control returns to step S13. Therefore, as long as the power switch 257 is in the on state, the live view operation is repeatedly performed. Thereby, live view display for displaying a moving image on the rear liquid crystal monitor 26 is performed.

  After the live view operation, it is determined whether or not the playback switch linked to the playback button 13 is on (step S17). If the result of this determination is that the playback switch is on, playback is performed (step S18), and the image data recorded on the recording medium 245 is played back and displayed on the rear liquid crystal monitor 26. At this time, if data related to the size and mass of the subject associated with the image data to be reproduced is recorded on the recording medium 245, this data is reproduced together with the image data. Thereby, the size and mass of the subject can be displayed superimposed on the image. Note that the setting of the display and non-display of the size and mass of the subject can be switched by operating the touch panel 236 or various buttons.

  After the reproduction operation is completed or if the result of determination in step S17 is that the reproduction switch is not on, it is determined whether or not the menu switch linked to the menu button 14 is on (step S19). . If the result of determination in step S19 is that the menu switch is on, menu setting operation is performed (step S20). In step S20, a menu screen is displayed on the rear liquid crystal monitor 26, and shooting is performed on various setting screens such as ISO sensitivity, white balance, manual focus (MF) mode, autofocus (AF) mode, and image stabilization mode. The user operates the cross button 15 and the decision button 16 to set various modes and parameters. For example, it is possible to register, change, and delete master data used in the subject mass calculation process described later. After setting, it operates according to the setting. For example, when the image stabilization mode is set, the image stabilization operation is executed during the live view operation and the shooting operation.

  After the menu setting operation or if the result of determination in step S19 is that the menu switch is not in the on state, it is determined whether or not the 1R switch 256a is in the on state by half-pressing the release button 56. (Step S21). If the result of determination in step S <b> 21 is that the 1R switch 256 a is on, a shooting operation is performed (step S <b> 30), and image data obtained by shooting the subject, and the size and mass of the subject are recorded on the recording medium 245. The details of the photographing operation performed in step S30 will be described later.

  After the photographing operation or as a result of the determination in step S21, it is determined whether or not the power switch 257 is in the on state (step S23). If the result of determination in step S23 is that the power switch 257 is on, processing returns to step S13 and the above-described operation is repeated. On the other hand, if the result of determination in step S23 is that the power switch 257 is not on, power supply is stopped (step S25), the process returns to step S3, and the digital camera 1 transitions to the sleep state.

  Next, the photographing operation of the digital camera 1 will be described in detail with reference to FIGS. Here, a case will be described as an example in which a wallace 3 held by a person 2 as shown in FIG. 5 is photographed and the size and mass of the wallara 3 are recorded in association with image data.

When the release button 56 is half-pressed by the half-pressing operation of the release button 56, the body CPU 229 performs the following processing according to the processing flow shown in FIG.
First, the subject is automatically detected and focused (step S31). If the automatically detected subject is different from the subject whose subject distance and mass are to be measured, the photographer may specify the subject on the touch panel 236. For example, when the person 2 is in focus, the photographer may specify the wallara 3 on the touch panel 236 and focus on the wallara 3.

  Next, in step S33, photometric processing is performed in a state where the focus is on the subject (wara 3) by the processing in step S31, and an exposure amount necessary for photographing the subject satisfactorily is calculated. Specifically, an image sensor driving circuit 223 that takes in an analog signal from the image sensor 221 measures the field luminance, and the body CPU 229 calculates an exposure control value for proper exposure based on the field luminance.

  In step S35, the subject distance, which is the distance to the subject focused by the body CPU 229, is calculated. For the subject distance, for example, the focus adjustment lens position (focus position) of the photographing optical system 101 is optically detected by a contrast AF method for detecting a focus position from the contrast of captured images that have been repeatedly picked up or a phase difference AF method using a phase difference sensor. It can be calculated by using any known technique such as a method of detecting the position by the position detection mechanism 105 and calculating the subject position from the driving amount from the infinite position or the closest position of the focus adjustment lens, or the triangulation method. In order to accurately measure the subject distance, as illustrated in FIG. 6, when the LED light emitting unit 299 b emits light and the field of view is dark, the subject brightness is increased and the ranging accuracy is further increased. it can.

  In step S <b> 37, the image processing circuit 227 extracts a subject area from the image data read by the image sensor driving mechanism 223 and used for live view display. Then, the body CPU 229 determines the subject based on the focal length of the photographing optical system 101 (the photographing lens 101a and the photographing lens 101b), the subject distance calculated in step S35, and the subject region extracted from the image data. Calculate the size.

  Even if the calculated subject size is the same, the meaning of the size may differ depending on whether the subject size is “body length” or “body height”. Therefore, in step S37, the size of the subject is calculated, and it is determined whether the size is “body length” or “body height”. Specifically, the determination is made based on the output from the vertical / horizontal posture detection sensor 258 of the digital camera 1. If there is an error in the determination, the photographer is provided with a function that can be manually corrected. For example, when the digital camera 1 is held sideways as shown in FIG. When the digital camera 1 is held vertically, the calculated size of the subject may be uniformly determined as “body height”. Here, it is assumed that the subject size is calculated as “body length” and “60 cm”.

In step S39, the full pressing operation of the release button 56 is monitored. Specifically, the state of the 2R switch 256b is repeatedly determined until the 2R switch 256b is turned on.
If it is determined that the 2R switch 256b is in the on state, the exposure time is controlled according to the exposure control value calculated in step S33. Thereafter, the image sensor drive mechanism 223 takes in image data in which the subject is focused from the image sensor 221 (step S41). If the subject has low brightness in step S33, image data may be acquired after the strobe light emitting unit 299a emits light to illuminate the subject.

  When the image data is acquired in step S41, the body CPU 229 displays a screen for selecting whether or not to record the mass of the subject in association with the image data on the rear liquid crystal monitor 26 (step S43).

  If the photographer selects not to record the mass of the subject in step S43, the image processing circuit 227 performs image processing such as white balance correction on the image data acquired in step S41 (step S49). Then, the compression / decompression circuit 231 compresses the image data processed in step S49 with JPEG, TIFF, or the like (step S51), and then the recording medium control circuit 243 records the compressed image data on the recording medium 245. (Step S53). At this time, the size of the subject calculated in step S37 and information for identifying whether the size is the body length or the body height are recorded on the recording medium 245 in association with the image data. When the recording on the recording medium 245 is completed, the photographing operation is terminated and the process returns to the main routine of FIG.

  On the other hand, when the photographer selects to record the mass of the subject in step S43, the body CPU 229 is illustrated in FIG. 7 for inputting the type of the subject, which is information necessary for calculating the mass of the subject. Such UI control is displayed on the rear liquid crystal monitor 26 (step S45). More specifically, the body CPU 229 first refers to the master data table illustrated in FIG. 8 stored in the flash memory 249 via the flash memory control circuit 247. Then, the data registered in the “type 1” to “type 4” columns of the master data table is read and displayed on the rear liquid crystal monitor 26 as data of each layer of UI control as illustrated in FIG. .

  Thus, the photographer inputs the type of subject by selecting the type of subject displayed hierarchically on the UI control using the touch panel 236 or various operation buttons (cross button 15, decision button 16, etc.). be able to. In this case, the photographer selects “organic matter”, “seafood”, and “wara” in this order, and inputs the subject type “wara”.

  When the type of subject is input by the photographer's operation, the body CPU 229 calculates the mass of the subject based on the size of the subject calculated in step S37 and the type of subject selected in step S45 ( Step S47). More specifically, the body CPU 229 searches the master data table illustrated in FIG. 8 recorded in the recording medium 245 by setting the subject type, the subject size, the body height and the body length identification as the search conditions. To do. Then, the mass of the subject is calculated by reading the data in the “mass” column of the record extracted by the search. In this case, by searching for the conditions “type 1 = organic matter”, “type 2 = seafood”, “type 3 = wara”, “size = 60 cm”, “body height / body length = body length”, “mass = 2000 g Is calculated.

  When the body CPU 229 calculates the mass of the subject, the image processing circuit 227 performs image processing such as white balance correction on the image data (step S49), and the compression / decompression circuit 231 outputs the image data processed in step S49. Compression is performed using JPEG or TIFF (step S51).

  Finally, the recording medium control circuit 243 associates the compressed image data with the identification of the subject size, body height and length calculated in step S37, and the subject mass calculated in step S47. In step S53, the photographing operation is completed.

  As illustrated in FIG. 9, the data recorded in association with the image data in step S <b> 53 includes the subject type, the subject size, the body length and height identification information, and the subject mass. The acquisition date and time, coordinate information for cursor (arrow) display, and the like may be included. Further, these data recorded in association with the image data may be recorded in the image file, and may be stored together with the image data in the Exif format, for example.

  As described above, according to the digital camera 1 of the present embodiment, the size and mass of the subject can be calculated and recorded in association with the subject image data. Thereby, at the time of reproducing the image data, the name of the subject (warasa), the size (60 cm), and the mass (2 kg) can be displayed together with the image of the subject as illustrated in FIG.

  Further, according to the digital camera 1, by recording the coordinate information for displaying the cursor together with the image data, as shown in FIG. 10, the cursor (arrow) indicating the size of the subject in the vicinity of the subject. Can be displayed. Thereby, the size of the subject can be displayed more easily.

  FIG. 10 shows an example in which the length in the direction parallel to the four sides of the field of view of the digital camera 1 is calculated as the size of the subject. However, the measurement direction of the size of the subject is the four sides of the field of view. It is not limited to parallel directions. For example, as illustrated in FIG. 11, the size of the subject may be calculated using the direction inclined with respect to the field of view of the digital camera 1 as the measurement direction. The process of calculating the size of the subject using an arbitrary direction as the measurement direction can be performed, for example, by the image processing circuit 227 extracting the contour of the subject and determining the longest direction of the subject as the measurement direction.

  Further, according to the digital camera 1, the photographer selects the type of the subject by registering the mass of the subject corresponding to the type and size of the subject in advance in the master data table illustrated in FIG. By simply doing this, the mass of the subject can be calculated. For this reason, the size and mass of the subject can be recorded in association with the image data of the subject very easily.

In this embodiment, the case where there is a record that matches the search condition in the master data table has been described as an example. However, the existence of a record that matches the search condition is not always essential.
The case where the size of the dachshund 4 illustrated in FIG. 12 is 40 cm high will be described as an example. In the master data table illustrated in FIG. 8, there is no record corresponding to a dachshund with a height of 40 cm, but there is a record of the same type having a different size (that is, a dachshund record with a height of 35 cm and a height of 45 cm). doing. In such a case, the mass corresponding to the size of the subject is calculated by interpolation using the same type of records having different sizes. As a result, the mass (3000 g) of a dachshund with a body height of 40 cm can be calculated even though there is no record that matches the conditions in the master data table. Accordingly, it is possible to record the size and mass of the dachshund 4 in association with the image data. As illustrated in FIG. 13, when reproducing the image data of the dachshund 4, the size and mass are recorded on the image. It can be displayed overlaid.

  If no record of the same type exists, the type of subject to be selected is not displayed in the UI control in step S45. In such a case, the “new registration” of the UI control is selected to register the master data. Thus, since the mass can be calculated using newly registered master data, the mass of an arbitrary subject can be recorded in association with the image data. FIG. 14 shows an example of a master data registration screen displayed after selecting “New registration” in the UI control. FIG. 15 shows an example of an input screen displayed after each text box is selected on the master data registration screen illustrated in FIG. Registration of master data in the master data table is not limited to during the shooting operation, but can also be performed during the menu setting operation in step S20 shown in FIG.

  In the present embodiment, an example is shown in which the mass of the subject is calculated and recorded during the shooting operation, but the mass of the subject may be calculated after the shooting operation and recorded in association with the image data. Specifically, for example, during the playback operation in step S18 shown in FIG. 3, the UI control illustrated in FIG. 7 is displayed on the playback screen, and the user of the digital camera 1 selects the type of subject. May be. Thus, the mass of the subject is calculated by the above-described method based on the type of subject selected on the playback screen and the size, body length, and body height identification information recorded together with the image data in the shooting operation. The image data can be recorded in association with the image data.

  Further, according to the digital camera 1, whether the calculated subject size is “body height” or “body length” from the posture of the digital camera 1 detected by the vertical / horizontal posture detection sensor 258 is automatically set. Judgment can be made. FIG. 16 shows an example in which it is determined that the calculated subject size is “body length” because the digital camera 1 is photographed while being held sideways. FIG. 17 shows an example in which the digital camera 1 is photographed while being held in the vertical direction, and thus the calculated subject size is determined to be “body height”. The relationship between the orientation of the digital camera 1 and “body height / body length” is not limited to the above relationship. When the digital camera 1 is held sideways, the calculated subject size may be determined as “body length”.

  The digital camera according to the present embodiment is a single-lens reflex digital camera that shoots while confirming a subject in a viewfinder view. The difference from the digital camera 1 according to the first embodiment is that a live view image of a subject is not displayed on the rear liquid crystal monitor 26 and a phase difference AF sensor is provided instead of the contrast AF circuit 226. Since the other points are the same as those of the digital camera 1, detailed description of the configuration is omitted.

  FIG. 18 is a flowchart illustrating the operation after the power-on reset of the digital camera according to the present embodiment. The operation of the digital camera according to the present embodiment is the same as illustrated in FIG. 18, except that the live view operation start (step S11 in FIG. 4) and the live view operation (step S15 in FIG. 4) are omitted. Only the photographing operation is different from the operation of the digital camera 1 according to the first embodiment.

  FIG. 19 is a flowchart illustrating the photographing operation of the digital camera according to the present embodiment. Hereinafter, the photographing operation of the digital camera according to the present embodiment will be described in detail with reference to FIG.

  In the digital camera according to the present embodiment, when the release button 56 is half-pressed by the half-press operation of the release button 56, the body CPU 229 performs the following processing according to the processing flow shown in FIG.

  First, it is determined whether or not the digital camera is set to the AF mode (step S61). When the MF mode is set, the photographer manually operates the distance ring 112 to focus on the subject, and designates the subject to be measured on the touch panel 236.

  On the other hand, if the AF mode is set, the subject is automatically detected and phase difference AF using the phase difference AF sensor is executed (step S63). Specifically, the driving direction and the number of driving pulses of the photographing optical system 101 are calculated based on a defocus amount signal detected by a phase difference AF circuit (not shown) constituting the phase difference AF sensor. Then, the subject is focused by driving the imaging optical system 101 based on the calculated driving direction and the number of driving pulses. Note that if the automatically detected subject is different from the subject whose subject distance and mass are to be measured, the photographer may specify the subject on the touch panel 236.

  In step S65, photometric processing is performed in a state where the focus is on the subject, and an exposure amount necessary to photograph the subject satisfactorily is calculated. Specifically, an image sensor driving circuit 223 that captures an analog signal from the image sensor 221 measures the subject brightness, and the body CPU 229 performs exposure control values (shutter speed, aperture value, etc.) that achieves appropriate exposure based on the field brightness. ) By calculation.

  In step S67, the amount of movement (for example, the number of drive pulses) of the photographing optical system 101 in step S63 or by manual operation is detected, and the subject distance is calculated based on the detection result. Specifically, for example, the subject distance is calculated from the accumulated movement amount from infinity to which the detected movement amount is added.

  In step S69, it is determined whether or not the 2R switch 256b is on. If the 2R switch 256b is not in the on state, that is, if the release button 56 is not fully pressed, it is determined whether or not the 1R switch 256a is in the on state (step S71). In step S71, if the 1R switch 256a is not in the on state, that is, if the release button 56 is not in the half-pressed state, the photographing operation is terminated as if the photographing operation was stopped. On the other hand, if the release button 56 is in the half-pressed state, the process returns to step S69 and the above-described processing is repeated. Thereby, the full pressing operation of the release button 56 is monitored.

  When the full pressing operation of the release button 56 is detected, the exposure operation is started. Specifically, first, execution of narrowing down is instructed (step S73). Here, the aperture value calculated in step S65 is transmitted to the lens CPU 111, and the aperture of the aperture 103 is instructed to cause the drive mechanism 109 to perform an aperture aperture operation up to the calculated aperture value. After the narrowing execution instruction, the completion of narrowing is monitored (step S75).

  When a completion signal is received from the lens CPU 111 and the completion of the aperture is detected, an exposure operation is performed (step S77). Specifically, first, the front curtain of the shutter 203 is run, and charge accumulation of the pixel signal of the image sensor 221 is started. Thereafter, after the shutter time corresponding to the shutter speed calculated in step S65 or the manually set shutter time has elapsed, the rear curtain of the shutter 203 is caused to travel, and the charge accumulation of the image sensor 221 is stopped.

  When the exposure operation is completed, next, an instruction to open the aperture is given (step S79). In this case, the lens CPU 111 is instructed to open the aperture of the aperture 103, and causes the aperture drive mechanism 109 to perform the aperture operation up to the aperture value. After the instruction to open the aperture is reached, the completion of aperture opening is monitored (step S81).

When the completion signal is detected by receiving the completion signal from the lens CPU 111, the image sensor driving mechanism 223 then takes in the image data from the image sensor 221 (step S83).
In step S85, the image processing circuit 227 extracts a subject area from the image data captured in step S83. Then, the body CPU 229 determines the subject based on the focal length of the photographing optical system 101 (the photographing lens 101a and the photographing lens 101b), the subject distance calculated in step S65, and the subject region extracted from the image data. Calculate the size. Further, based on the output from the vertical / horizontal posture detection sensor 258, whether the size is “body length” or “body height” is determined by the same method as in the first embodiment.

  When the size of the subject is calculated in step S85, the body CPU 229 displays on the rear liquid crystal monitor 26 a screen for selecting whether to record the mass of the subject in association with the image data captured in step S83 ( Step S87).

  If the photographer selects not to record the mass of the subject in step S87, the image processing circuit 227 performs image processing such as white balance correction on the image data acquired in step S83 (step S93). The CPU 229 reproduces the image processed image data and displays it on the rear liquid crystal monitor 26 (step S95). Then, the compression / decompression circuit 231 compresses the image data processed in step S93 with JPEG, TIFF, or the like (step S97), and then the recording medium control circuit 243 records the compressed image data on the recording medium 245. (Step S99). At this time, the size of the subject calculated in step S85 and information for identifying whether the size is the body length or the body height are recorded on the recording medium 245 in association with the image data. When the recording on the recording medium 245 is completed, the photographing operation ends.

  On the other hand, when the photographer selects to record the mass of the subject in step S87, the body CPU 229 is illustrated in FIG. 7 for inputting the type of the subject, which is information necessary for calculating the mass of the subject. Such UI control is displayed on the rear liquid crystal monitor 26 (step S89). Thus, the photographer inputs the type of subject by selecting the type of subject displayed hierarchically on the UI control using the touch panel 236 or various operation buttons (cross button 15, decision button 16, etc.). be able to.

  When the type of subject is input by the photographer's operation, the body CPU 229 calculates the mass of the subject based on the size of the subject calculated in step S85 and the type of subject selected in step S89 ( Step S91).

  When the body CPU 229 calculates the mass of the subject, the image processing circuit 227 performs image processing such as white balance correction on the image data (step S93), the body CPU 229 reproduces the image processed image data, The image is displayed on the liquid crystal monitor 26 (step S95). Then, the compression / decompression circuit 231 compresses the image data processed in step S93 with JPEG, TIFF, or the like (step S97).

  Finally, the recording medium control circuit 243 associates the compressed image data with the identification of the subject size, body height, and body length calculated in step S85, and the subject mass calculated in step S91. In step S99, the photographing operation is completed.

  As described above, unlike the digital camera 1 according to the first embodiment, the digital camera according to the present embodiment calculates the size of the subject after the 2R switch 256b is turned on. Similar to the camera 1, the size and mass of the subject can be calculated and recorded in association with the image data of the subject. Accordingly, when the image data is reproduced, the name, size, and mass of the subject can be displayed together with the image data.

  Further, the digital camera according to the present embodiment can display a cursor (arrow) indicating the size of the subject in the vicinity of the subject, and the photographer calculates the mass of the subject simply by selecting the type of the subject. This is also the same as the digital camera 1 according to the first embodiment.

  Therefore, the same effect as that of the digital camera 1 according to the first embodiment can be obtained by the digital camera according to the present embodiment.

DESCRIPTION OF SYMBOLS 1 ... Digital camera, 2 ... Person, 3 ... Wallace, 4 ... Dachshund, 11 ... Reduction button, 12 ... Expansion button, 13 ... Playback button, 14 ... Menu button, 15 ... cross button, 16 ... decision button, 17 ... edit button, 26 ... back LCD monitor, 29 ... finder LCD monitor, 54 ... mode dial, 56 ... Release button, 57 ... Power button, 100 ... Interchangeable lens, 101 ... Shooting optical system, 101a, 101b ... Shooting lens, 103 ... Aperture, 105 ... Optical position detection Mechanism 107: Optical system drive mechanism 109 ... Aperture drive mechanism 110 ... Encoder 111 ... Lens CPU 112 ... Distance ring 200 ... Camera body 203 ... Shutter, 205 ... dustproof filter, 20 ... Piezoelectric element, 209 ... Infrared cut filter, 210 ... Optical low-pass filter, 211 ... Dustproof filter drive circuit, 213 ... Shutter drive mechanism, 221 ... Image sensor, 223 ..Image sensor drive mechanism, 225... Preprocessing circuit, 226... Contrast AF circuit, 227... Image processing circuit, 229... Body CPU, 231. Video signal output circuit, 235, liquid crystal monitor drive circuit, 236, touch panel, 237, SDRAM control circuit, 238, SDRAM, 239, input / output circuit, 241 ... communication circuit, 243 ... Recording medium control circuit, 245 ... Recording medium, 247 ... Flash memory control circuit, 249 ... Flash memory, 253 ... H detection circuit, 254 ... shooting mode switch, 255 ... other various switches, 256a ... 1R switch, 256b ... 2R switch, 257 ... power switch, 258 ... vertical / horizontal posture detection sensor 259 ... Detachment detection switch, 260 ... Shake correction drive mechanism, 261 ... Data bus, 262 ... ASIC, 290 ... Image sensor unit, 296 ... Actuator drive circuit, 297 ... Shake detection means, 297a ... angular velocity sensor, 297b ... angular velocity detection circuit 297b, 298 ... light emission circuit, 299a ... strobe light emission unit, 299b ... LED light emission unit, 300 ... communication contact

Claims (7)

An imaging device equipped with an imaging lens,
Imaging means for photoelectrically converting a light flux from a subject and repeatedly acquiring image data;
Ranging means for calculating the subject distance;
A length measuring means for calculating the size of the subject based on the focal length of the photographing lens, the subject distance calculated by the distance measuring means, and the image data acquired by the imaging means;
Subject type selection means for allowing the user to input the subject type;
Mass calculating means for calculating the mass of the subject based on the size of the subject calculated by the length measuring means and the type of the subject selected by the subject type selecting means;
A recording unit that records the image data acquired by the imaging unit, the size of the subject calculated by the length measuring unit, and the mass of the subject calculated by the mass calculating unit in association with each other on a recording medium. And a photographing apparatus comprising: The imaging device according to claim 1, further comprising:
Storage means for storing the mass of the subject corresponding to the type of subject and the size of the subject,
The mass calculating unit calculates the mass of the subject with reference to the storage unit based on the type of the subject selected by the subject type selecting unit and the size of the subject calculated by the length measuring unit. An imaging apparatus characterized by: In the imaging device according to claim 1 or 2, further,
Including a release instruction means for instructing a photographing operation;
When the release instruction means is in the first operation state,
The distance measuring means calculates the subject distance,
The length measuring means calculates the size of the subject,
When the release instruction means is in the second operation state,
The subject type selection means detects the type of the subject selected by the user,
The imaging apparatus characterized in that the mass calculation means calculates the mass of the subject. In the imaging device according to claim 1 or 2, further,
Including a release instruction means for instructing a photographing operation;
When the release instruction means is in the first operation state,
The distance measuring means calculates the subject distance,
When the release instruction means is in the second operation state,
The length measuring means calculates the size of the subject,
The subject type selection means detects the type of the subject selected by the user,
The imaging apparatus characterized in that the mass calculation means calculates the mass of the subject. In the imaging device according to claim 3 or 4,
The release instruction means is a release button,
The first operation state is a half-pressed state of the release button,
The photographing apparatus according to claim 2, wherein the second operation state is a state where the release button is fully pressed. The photographing apparatus according to any one of claims 1 to 5, further comprising:
Display means for displaying image data of the subject recorded on a recording medium by the recording means;
The imaging device, wherein the display means displays the size of the subject and the mass of the subject stored in association with the image data of the subject so as to overlap the image data of the subject. In the imaging device according to claim 6,
The display means displays a selection screen for selecting the type of the subject,
The subject type selection unit detects the type of the subject selected by the user from the types of subjects displayed on the display unit.