JP2013090241A - Display control device, imaging device, and display control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which, when a user magnifies a partial region in a live-view image, a relative positional relationship between a subject image and an auxiliary line is different before and after the magnification, so that the user cannot correctly determine the horizontality and verticality of composition.SOLUTION: A display control device comprises: a display control unit that displays an image and an auxiliary line superimposed on the image on a display; and a reception unit that receives a change instruction to change the display magnification of the displayed image. The display control unit displays the image and the auxiliary line based on the changed display magnification on the display while maintaining a relative positional relationship between the image and the auxiliary line when the reception unit has received the change instruction.

Description

  The present invention relates to a display control device, an imaging device, and a display control program.

There is known a camera that displays auxiliary lines such as horizontal lines and vertical lines on a live view image displayed on a display unit.
[Prior art documents]
[Patent Literature]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2002-290780

  The user compares the horizontal or vertical part of the building, which is the subject image displayed as the live view image, with the auxiliary line, and determines the horizontal and vertical of the composition. In this case, when the user enlarges a part of the live view image, the auxiliary line is not displayed, or even if the auxiliary line is displayed, the relative positional relationship between the subject image and the auxiliary line differs before and after the enlargement. End up. Therefore, the user cannot correctly determine the horizontal and vertical of the composition.

  The display control apparatus according to the first aspect of the present invention changes a display control unit that displays a live view image and an auxiliary line superimposed on the live view image on a display, and a display magnification of the displayed live view image. A display unit that receives a change instruction, and the display control unit maintains a relative positional relationship between the live view image and the auxiliary line according to the changed display magnification when the reception unit receives the change instruction. Display live view image and auxiliary lines on the display.

  Moreover, the live view apparatus in the 2nd aspect of this invention is provided with the imaging part for acquiring a live view image, and the above-mentioned display control apparatus.

  In addition, the display control program according to the third aspect of the present invention changes a display step of displaying a live view image and an auxiliary line superimposed on the live view image on a display, and a display magnification of the displayed live view image. An accepting step for accepting a change instruction to be performed, and a display device for displaying the live view image and the auxiliary line with the changed display magnification while maintaining the relative positional relationship between the live view image and the auxiliary line when the change instruction is accepted. Display change step to be displayed on the computer.

  It should be noted that the above summary of the invention does not enumerate all the necessary features of the present invention. In addition, a sub-combination of these feature groups can also be an invention.

It is a back perspective view of the camera concerning this embodiment. It is a block diagram of the camera concerning this embodiment. It is a figure explaining the display process of the auxiliary line with respect to a live view image. It is a figure explaining the switching process of the display mode of an auxiliary line. It is a figure explaining the movement process of an auxiliary line. It is a figure explaining the live view image and the expansion display process of an auxiliary line. It is a figure explaining the calculation process in the live view image and the auxiliary line enlarged display process. It is a figure explaining the movement process of the auxiliary line in an enlarged display state. It is a flowchart of the imaging | photography process of the camera which concerns on this embodiment. It is a figure explaining the 1st display process of a reference line. It is a figure explaining the 2nd display process of a reference line. It is a figure explaining the change process of a focus evaluation area | region.

  Hereinafter, the present invention will be described 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 rear perspective view of a camera 10 as an imaging apparatus according to the present embodiment. Here, an explanation will be given by taking an interchangeable lens camera as an example. The camera 10 is configured by mounting an interchangeable lens 20 on a camera body 30. A plurality of interchangeable lenses 20 having different focal lengths, open F values, and the like are attached to the camera body 30 in a replaceable manner. The interchangeable lens 20 includes an optical system arranged along the optical axis in the lens barrel. The optical system includes a focus lens and a zoom lens.

  A back monitor 31 is provided on the back of the camera body 30. On the rear monitor 31, in addition to displaying the captured image data, various setting information regarding various settings of the camera 10, menu items, and the like are also displayed. The rear monitor 31 displays a live view image obtained by sequentially photoelectrically converting a subject image formed on the light receiving surface of the image sensor. An upper surface monitor 32 is provided on the upper left side of the camera body 30. The upper surface monitor 32 displays shooting information such as shutter speed, aperture value, ISO sensitivity, and the like.

  The camera body 30 is provided with a plurality of operation members. On the upper right side of the camera body 30, a release button 33 for receiving a shooting instruction, a shooting mode dial 34 for receiving a switching of a shooting mode, and a zoom lever 35 for adjusting a field angle by driving a zoom lens with a motor are arranged. Yes. A multi selector 36 and a power switch 37 are arranged on the right side of the rear monitor 31. The multi-selector 36 includes a cross button used for moving a cursor or the like displayed on the rear monitor 31 and a determination button for executing a function or the like of an item selected by the cursor. The power switch 37 is an operation member that receives on / off switching of the power supply of the camera 10.

  A playback button 38 for playing back an image file recorded on a memory card or the like, a delete button 39 for deleting an image file, and a menu button 40 for displaying various setting items on the back monitor 31 are arranged on the upper left side of the rear monitor 31. Has been. On the left side of the rear monitor 31, an enlargement button 41 for enlarging the display image on the rear monitor 31 and a reduction button 42 for reducing the display image on the rear monitor 31 are arranged. Further, on the lower left side of the rear monitor 31, an auxiliary line button 43 for superimposing and displaying an auxiliary line on the display image on the rear monitor 31, and an enlarged storage button 44 for recording enlarged image data in a memory are arranged.

  A rear command dial 45 is disposed on the rear surface of the camera body 30. A front command dial 46 is disposed on the front surface of the camera body 30. Various functions such as an aperture value setting function and a shutter speed setting function are pre-assigned to the rear command dial 45 and the front command dial 46 by menu items. Further, in a state where another operation member is being pressed, a function related to the other operation member may be assigned to the rear command dial 45 and the front command dial 46. For example, in a state where the auxiliary line button 43 is pressed, a function for changing the display mode of the auxiliary line being displayed on the rear monitor 31 is assigned to the rear command dial 45 and the front command dial 46.

  FIG. 2 is a block diagram of the camera 10 according to the present embodiment. The system control unit 100 directly or indirectly controls each element of the camera 10. The photographic lens 101 is disposed in the interchangeable lens 20 and includes a focus lens and a zoom lens. The aperture driving circuit 103 drives the aperture blades of the aperture mechanism 102 disposed in the interchangeable lens 20.

  The mirror mechanism 104 swings between a reflection position that reflects the subject light flux from the interchangeable lens 20 and guides it to the finder optical system, and a retreat position that retracts the subject light flux from the interchangeable lens 20 so as to enter the image sensor 108. A main mirror is provided. In addition, the mirror mechanism 104 includes a sub mirror that reflects the subject light beam that has passed through a semi-transmissive region of a part of the main mirror toward the phase difference AF element 120. The mirror drive circuit 105 drives the mirror mechanism 104 under the control of the system control unit 100.

  A shutter 106 and an image sensor 108 are arranged behind the main mirror arranged at the reflection position along the optical axis. A shutter drive circuit 107 drives the shutter 106 to adjust the amount of light guided to the image sensor 108. The image sensor 108 is a photoelectric conversion element such as a CCD or CMOS sensor, for example, and converts a subject image formed on the light receiving surface into an electrical signal. In the present embodiment, the imaging element 108 functions as at least a part of an imaging unit for acquiring an image.

  The image processing circuit 109 converts the subject image photoelectrically converted by the image sensor 108 from an analog signal to a digital signal, and performs image processing on the converted subject image to generate image data. The compression / decompression circuit 110 compresses the image data generated by the image processing circuit 109 into an image file in a standardized image format. The compression / decompression circuit 110 decompresses the image file recorded on the memory card 113 when reproducing the image file.

  The memory 111 is composed of a DRAM, SRAM, or the like that can be read and written at high speed, and plays a role as a work memory in image processing performed by the image processing circuit 109 and processing performed by the compression / decompression circuit 110. Image data generated by the compression processing of the compression / decompression circuit 110 is recorded on the memory card 113 from the memory 111 via the card connector 112. The memory card 113 is a non-volatile memory such as a flash memory that can be attached to and detached from the camera body 30 and is configured by a flash memory or the like.

  The image processing circuit 109 sequentially generates display image data in parallel with image data to be processed for recording. The rear display control unit 114 causes the rear monitor 31 to display images of display image data that are sequentially generated as live view images. Further, the rear display control unit 114 displays various menu items related to various settings of the camera 10 on the rear monitor 31. The upper surface display control unit 115 causes the upper surface monitor 32 to display photographing information such as a shutter speed, an aperture value, and ISO sensitivity.

  The system memory 116 is configured by an electrically erasable / recordable nonvolatile memory such as an EEPROM (registered trademark), and records constants, variables, programs, and the like necessary for the operation of the camera 10. The timer 117 performs a time measuring operation under the control of the system control unit 100. The battery 118 is a secondary battery that is detachable from the camera 10 and supplies power to the system control unit 100. The external interface 119 is connected to an external device by wire or wireless to execute data communication.

  The phase difference AF circuit 121 generates a phase difference signal according to the output of the phase difference AF element 120. The contrast AF circuit 122 calculates an AF evaluation function according to the output of the image sensor 108. The irradiation device driving circuit 124 drives the AF area irradiation device 123 provided on the front surface of the camera body 30 during the AF operation under the control of the system control unit 100. The photometric device 125 is provided in the vicinity of the optical viewfinder and detects the brightness of the subject.

  Each operation member is provided with a switch for the system control unit 100 to determine a user operation. The release button 33 is a button that can be detected in two steps in the pressing direction, and includes a switch SW1 that detects pressing of the first step and a switch SW2 that detects pressing of the second step. The shooting mode dial 34 includes a switch SW3 that detects one shooting mode selected from a plurality of shooting modes. The zoom lever 35 includes a switch SW4 that detects an instruction to the wide-angle side and a switch SW5 that detects an instruction to the telephoto side.

  The multi-selector 36 includes switches SW6, SW7, SW8, SW9 that detect pressing of the up button, the down button, the left button, and the right button, respectively, and a switch SW10 that detects pressing of the enter button. The power switch 37 includes a switch SW11 that detects an operation to the on position. The play button 38, the delete button 39, and the menu button 40 include switches SW12, 13, and 14 that detect pressing by the user, respectively.

  The enlargement button 41, the reduction button 42, the auxiliary line button 43, and the enlargement storage button 44 respectively include switches SW15, SW16, SW17, and SW18 that detect pressing by the user. The rear command dial 45 includes a switch SW19 that detects a clockwise operation and a switch SW20 that detects a counterclockwise operation. Similarly, the front command dial 46 includes a switch SW20 that detects a clockwise operation and a switch SW21 that detects a counterclockwise operation.

  FIG. 3 is a diagram for explaining auxiliary line display processing for the live view image displayed on the rear monitor 31. When the user points the camera 10 at the building, the rear display control unit 114 displays the live view image 200 on the rear monitor 31 as shown in FIG. Then, when the auxiliary line button 43 is pressed, the rear display control unit 114 superimposes and displays the horizontal auxiliary line group 210 and the vertical auxiliary line group 220 on the live view image 200 as shown in FIG.

  In the present embodiment, in the default state when the camera 10 is turned on, the horizontal auxiliary line group 210 includes three horizontal auxiliary lines 211, 212, and 213. The three horizontal auxiliary lines 211 to 213 are arranged at equal intervals. The central horizontal auxiliary line 212 is arranged so as to pass through the center of the screen. Similarly, in the default state, the vertical auxiliary line group 220 includes five vertical auxiliary lines 221, 222, 223, 224, and 225. The five vertical auxiliary lines 221 to 225 are arranged at equal intervals. The central vertical auxiliary line 223 is arranged so as to pass through the center of the screen.

  Note that the user may be able to set the presence / absence of auxiliary line display on the setting screen. In addition, the user may be able to set in advance the number and position of horizontal auxiliary lines in the default state on the setting screen. Similarly, the user may be able to set in advance the number and position of vertical auxiliary lines in the default state on the setting screen.

  FIG. 4 is a diagram for explaining the auxiliary line display mode switching process. In the present embodiment, the rear display control unit 114 switches the number of auxiliary lines, the thickness, and the transparency. First, the process for switching the number of auxiliary lines will be described. When the user rotates the front command dial 46 clockwise while pressing the auxiliary line button 43 on the display screen in the default state shown in FIG. 3B, the rear display control unit 114 is as shown in FIG. Increase the number of auxiliary lines from the default state. The horizontal auxiliary line group 230 includes five horizontal auxiliary lines 231, 232, 233, 234, and 235, which are more than the horizontal auxiliary line group 210. The vertical auxiliary line group 240 includes seven vertical auxiliary lines 241, 242, 243, 244, 245, 246, and 247, which are more than the vertical auxiliary line group 220.

  When the user rotates the front command dial 46 clockwise again while pressing the auxiliary line button 43 on the display screen shown in FIG. 4A, the rear display control unit 114 returns the number of auxiliary lines to the default state. . Thus, when the user rotates the front command dial 46 clockwise while pressing the auxiliary line button 43, the rear display control unit 114 alternates between a default state and an increased state in which the number of auxiliary lines is increased from the default state. Switch to. When the user rotates the front command dial 46 counterclockwise while pressing the auxiliary line button 43, the rear display control unit 114 alternates between a default state and a reduced state in which the number of auxiliary lines is reduced from the default state. Switch.

  Next, the auxiliary line thickness switching process will be described. When the user rotates the back command dial 45 counterclockwise while pressing the auxiliary line button 43 on the display screen in the default state shown in FIG. 3B, the back display control unit 114 is as shown in FIG. Next, make each auxiliary line thicker. When the user rotates the back command dial 45 again counterclockwise while pressing the auxiliary line button 43 on the display screen shown in FIG. 4B, the rear display control unit 114 sets the thickness of each auxiliary line to the default. Return to the state. As described above, when the user rotates the back command dial 45 counterclockwise while pressing the auxiliary line button 43, the rear display control unit 114 alternates between the default state and the thick line state in which the auxiliary line is thicker than the default state. Switch.

  Next, the auxiliary line transparency switching process will be described. When the user rotates the back command dial 45 clockwise while pressing the auxiliary line button 43 on the display screen in the default state shown in FIG. 3B, the back display control unit 114 is as shown in FIG. Each auxiliary line is set in a semi-transmissive state. When the user rotates the back command dial 45 again in the clockwise direction while pressing the auxiliary line button 43 on the display screen shown in FIG. 4C, the rear display control unit 114 sets each auxiliary line to the non-default state. Return to the transparent state. As described above, when the user rotates the back command dial 45 clockwise while pressing the auxiliary line button 43, the back display control unit 114 alternately switches between the non-transparent state and the semi-transparent state which are the default state.

  By enabling the display mode of the auxiliary lines in this way, the user can change to the auxiliary line display that makes it easy to determine the horizontal and vertical of the composition according to the subject. In addition, although the number, thickness, and transparency were demonstrated as a display mode of the auxiliary line which can be switched, it is not restricted to this, The color and line type of an auxiliary line may be switched. Further, the display mode of the auxiliary line that the user switches with the rear command dial 45 and the front command dial 46 may be set on the setting screen.

  FIG. 5 is a diagram for explaining auxiliary line movement processing. When the user specifies the direction in which the auxiliary line is desired to move while pressing the auxiliary line button 43 with the cross button of the multi-selector 36, the auxiliary line moving process is executed. For example, when the user presses the left button of the multi-selector 36 while pressing the auxiliary line button 43 on the display screen in the default state shown in FIG. 3B, the rear display control unit 114 is as shown in FIG. Next, the vertical auxiliary line group 220 is moved to the left. Further, the rear display control unit 114 adds the vertical auxiliary lines 226 to the vertical auxiliary line group 220 and keeps the vertical auxiliary lines at equal intervals. At this time, the rear display control unit 114 changes the display mode of the vertical auxiliary line group 220 from the display mode at the default position. In the present embodiment, the line type of the vertical auxiliary line group 220 is changed from a solid line to a broken line. With this configuration, the user can easily determine whether or not the reference vertical auxiliary line 223 has been moved from the center of the screen, which is the default position, when the subject is arranged in the left-right symmetry with respect to the center.

  When the user presses the upper button of the multi selector 36 while pressing the auxiliary line button 43 on the display screen in the default state shown in FIG. 3B, the rear display control unit 114, as shown in FIG. The horizontal auxiliary line group 210 is moved upward. Further, the rear display control unit 114 adds a horizontal auxiliary line 214 to the horizontal auxiliary line group 210 and keeps the horizontal auxiliary lines at regular intervals. At this time, the rear display control unit 114 changes the display mode of the horizontal auxiliary line group 210 from the display mode at the default position. In the present embodiment, the line type of the horizontal auxiliary line group 210 is changed from a solid line to a broken line. With this configuration, the user can easily determine whether or not the horizontal auxiliary line 212 serving as a reference has been moved from the center of the screen, which is the default position, when the subject is arranged vertically symmetrically with respect to the center.

  When the user presses the left button of the multi-selector 36 while pressing the auxiliary line button 43 on the display screen shown in FIG. 5B, the rear display control unit 114, as shown in FIG. Move group 220 to the left. Further, the rear display control unit 114 adds the vertical auxiliary lines 226 to the vertical auxiliary line group 220 and keeps the vertical auxiliary lines at equal intervals. At this time, the rear display control unit 114 changes the display mode of the vertical auxiliary line group 220 from the display mode at the default position. Further, the rear display control unit 114 changes the display mode of the vertical auxiliary line group 220 so as to be different from the display mode of the horizontal auxiliary line group 210. In the present embodiment, the line type of the vertical auxiliary line group 220 is changed from a solid line to a dotted line.

  By enabling the movement of the auxiliary line in this way, the user can correctly determine the horizontal and vertical of the composition by aligning the auxiliary line with the line of the subject. When the user presses the determination button of the multi-selector 36 with the horizontal auxiliary line group 210 and the vertical auxiliary line group 220 moved, the rear display control unit 114 causes the moved horizontal auxiliary line group 210 and vertical auxiliary line to move. The position and display mode of the group 220 may be returned to the default state shown in FIG. In addition, the line type is changed when the horizontal auxiliary line group 210 and the vertical auxiliary line group 220 are moved from the default position, but not limited to this, other display modes such as the color and thickness of the auxiliary line are changed. May be.

  The user can superimpose and display the auxiliary line optimized for the subject on the live view image by combining the functions of FIG. 4 and FIG. 5 described above. For example, when a user photographs a building, the number of auxiliary lines is set to the default number, the thickness is set to be thicker than the default state, and the transparency is set to a translucent state. Adjust the auxiliary line so that it is easy to see. The user can easily determine the level of composition by adjusting the angle of the camera 10 after making the horizontal auxiliary line substantially coincide with the horizontal line of the building. In addition, the user can arrange the building as a subject symmetrically within the photographing range by taking a composition based on the vertical auxiliary line passing through the center of the screen without moving the vertical auxiliary line group. .

  FIG. 6 is a diagram for explaining live-view image and auxiliary line enlarged display processing. In the present embodiment, the enlargement button 41 and the reduction button 42 serve as a reception unit that receives a change instruction for changing the display magnification. Then, the image processing circuit 109 and the rear display control unit 114 execute an enlargement display process in accordance with the operation of the enlargement button 41 and the reduction button 42.

  First, the image processing circuit 109 thins out the output of the image sensor 108 and sequentially generates display image data with a field of view rate of 100%. The rear display control unit 114 displays the image of the display image data on the rear monitor 31 as a live view image of the same magnification. That is, a display image displayed with a field of view rate of 100% is set as a display image of the same magnification.

  When the user presses the enlarge button 41, the image processing circuit 109 determines a change magnification for the display image according to the number of times the enlarge button 41 is pressed. In the present embodiment, when the enlargement button 41 is pressed n times, the image processing circuit 109 determines 2 n as the change magnification. Then, the image processing circuit 109 determines a partial area of the display image as an enlarged area according to the change magnification. The image processing circuit 109 thins out the output from the area corresponding to the enlarged area among the outputs of the image sensor 108 and sequentially generates image data for display corresponding to the enlarged area. The rear display control unit 114 displays the image of the display image data on the rear monitor 31 as an enlarged live view image. In the following description, when simply referred to as a “live view image”, the “live view image” includes both an “actual live view image” and an “enlarged live view image”.

  When the user presses the reduction button 42 after the enlargement, the image processing circuit 109 performs a reduction process of the display image according to the number of times the reduction button 42 is pressed, contrary to the procedure of the enlargement process of the display image described above. However, after the display image is reduced to the same magnification, the image processing circuit 109 does not execute the reduction process even when the reduction button 42 is pressed, and displays the display image data with a view rate of 100%. Generate.

  The image processing circuit 109 moves the position of the enlargement area according to the direction and the time when the cross button of the multi-selector 36 is pressed. For example, when the upper button of the multi-selector 36 is pressed, the image processing circuit 109 moves up the enlarged area by a predetermined scroll amount according to the pressing duration time. The enlargement area can be moved within the display image area of the same size. Then, the image processing circuit 109 sequentially generates display image data corresponding to the enlarged area after movement, and the rear display control unit 114 generates an image of the display image data corresponding to the enlarged area after movement. It is displayed on the rear monitor 31 as an enlarged live view image.

  Here, the user operates the enlargement button 41 and the multi selector 36 on the display screen of FIG. 6A in which the horizontal auxiliary line group 210 and the vertical auxiliary line group 220 are superimposed on the live view image 200 of the same magnification. Processing for instructing enlargement of the enlargement area 250 will be described. When the enlargement button 41 and the multi selector 36 accept an enlargement instruction for the enlargement area 250, the image processing circuit 109 sequentially generates display image data corresponding to the enlargement area 250 as described above. The rear display control unit 114 displays the enlarged live view image 300 corresponding to the enlarged region 250 on the rear monitor 31.

  At this time, the rear display control unit 114 causes the horizontal auxiliary line 212 and the vertical auxiliary line 221 included in the enlarged region 250 to be superimposed and displayed on the live view image 300. As shown in FIG. 6B, the rear display control unit 114 is arranged so that the relative positional relationship between the live view image 200 and the superimposed horizontal auxiliary line 212 and vertical auxiliary line 221 is maintained. The auxiliary line 212 and the vertical auxiliary line 221 are superimposed on the live view image 300. Hereinafter, an enlarged display process that maintains the relative positional relationship between the live view image and the auxiliary line will be described.

  FIG. 7 is a diagram for explaining a calculation process in the live view image and auxiliary line enlargement display process. In the memory 111, a storage area for the image display layer 400 and a storage area for the superimposed display layer 410 are provided. In the image display layer 400, image data for display is developed. In the superimposed display layer 410, data of an object such as an auxiliary line superimposed on the image of the image display layer 400 is developed.

In the image display layer 400 and the superimposed display layer 410, a coordinate system having a point corresponding to the upper left vertex of the display area of the rear monitor 31 as an origin is defined. In the coordinate system, the right direction of the screen is the positive x-axis direction, and the downward direction of the screen is the positive y-axis direction. In the image display layer 400 and the superimposed display layer 410, the points corresponding to the upper right vertex, lower left vertex, and lower right vertex of the display area of the rear monitor 31 are (X ₀ , 0), (0, Y ₀ ), (X ₀ , Y ₀ ). Then, the object on the superimposed display layer 410 is superimposed and displayed on the image on the image display layer 400 having the same coordinate value.

Fig.7 (a) is explanatory drawing of the data which comprise the display of above-mentioned Fig.6 (a). As shown in FIG. 7A, the data of the live view image 200 of the same magnification is developed on the image display layer 400, and the data of the horizontal auxiliary line group 210 and the vertical auxiliary line group 220 are displayed on the superimposed display layer 410. Has been deployed. The y coordinate values Y ₂₁₁ , Y ₂₁₂ , and Y ₂₁₃ of the horizontal auxiliary lines _{211 to 213} in the default state are recorded in the system memory 116 in advance. Similarly, the x coordinate values X ₂₂₁ , X ₂₂₂ , X ₂₂₃ , X ₂₂₄ , and X ₂₂₅ of the vertical auxiliary lines _{221 to 225} in the default state are recorded in the system memory 116 in advance. The rear display control unit 114 combines the data of the image display layer 400 and the data of the superimposed display layer 410 and superimposes the horizontal auxiliary line group 210 and the vertical auxiliary line group 220 on the live view image 200 on the rear monitor 31. Display.

When the enlargement instruction of the enlargement area 250 of the live view image 200 is received, the rear display control unit 114 extracts the coordinate value of each vertex of the corresponding area 411 corresponding to the enlargement area 250 in the superimposed display layer 410. As shown in FIG. 7 (b), the image processing circuit 109, the upper left vertex of the coordinate values of the corresponding area _{411 (X a, Y a)} , the coordinate values of the upper right apex _{(X b, Y a),} the lower left vertex coordinates The value (X _a , Y _b ) and the coordinate value (X _b , Y _b ) of the lower right vertex are extracted. The rear display control unit 114 extracts the x-coordinate value of the vertical auxiliary line existing within the x-coordinate range X _a ≦ x ≦ X _b of the corresponding region 411. In the present embodiment, the x coordinate value X ₂₂₁ of the vertical auxiliary line ₂₂₁ is extracted. Similarly, the rear display control unit 114 extracts the y coordinate value of the horizontal auxiliary line that exists within the range of y coordinate Y _a ≦ y ≦ Y _b of the corresponding region 411. In the present embodiment, the y coordinate value Y ₂₁₂ of the horizontal auxiliary line ₂₁₂ is extracted.

Here, the ratio of the distance from the upper left vertex to the vertical auxiliary line 221 with respect to the length of the corresponding region 411 in the x direction is (X ₂₂₁ −X _a ) / (X _b −X _a ). On the other hand, when the x-coordinate value of the vertical auxiliary line 221 in the case of enlarged display an enlarged area 250 and X _1, the distance from the upper left corner for the x-direction length of the superimposed display layer 410 in the enlarged display state to the vertical auxiliary line 221 The ratio is X ₁ / X ₀ . If equal ratio of these distances, i.e. _{X 1 / X 0 = (X} 221 -X a) / satisfies _(X b -X _a) the relationship (1), the live view image and auxiliary vertical before and after expansion The relative positional relationship with the line 221 is maintained. Similarly, the y-coordinate value of the horizontal auxiliary line 212 in the case of enlarged display an enlarged area 250 in the case of the _{Y 1, Y 1 / Y 0} = the _{(Y 212 -Y a) / (} Y b -Y a) If the relational expression (2) is satisfied, the relative positional relationship between the live view image and the horizontal auxiliary line 212 before and after enlargement is maintained.

The rear display control unit 114 calculates the x coordinate value X ₁ of the vertical auxiliary line 221 and the y coordinate value Y ₁ of the horizontal auxiliary line 212 using the above-described relational expressions (1) and (2). In addition, the image processing circuit 109 executes the above-described processing to sequentially generate image data of the enlarged live view image 300. Then, the rear display control unit 114 develops data on the image display layer 400 and the superimposed display layer 410.

FIG. 7C is an explanatory diagram of data constituting the display of FIG. 6B described above. As illustrated in FIG. 7C, the rear display control unit 114 develops the image data of the live view image 300 on the image display layer 400. Further, the rear display control unit 114 expands the vertical auxiliary line 221 to the coordinate values _{X 1} of the superimposed display layer 410, to expand the horizontal auxiliary line 212 to the coordinate value _{Y 1.} Then, the rear display control unit 114 combines the data of the image display layer 400 and the data of the superimposed display layer 410 and superimposes the horizontal auxiliary line 212 and the vertical auxiliary line 221 on the live view image 300 on the rear monitor 31. Display.

  Thus, by maintaining the relative positional relationship between the live view image and the auxiliary line before and after enlargement, the user can correctly determine the horizontal and vertical of the composition. For example, the user can correctly determine the level of the composition by confirming the horizontal auxiliary line 212 and the horizontal line of the building in both the live-view image 200 and the enlarged live-view image 300 of the same size. it can.

  When the user presses the decision button of the multi-selector 36 while pressing the enlargement storage button 44 in the enlarged display state, the system control unit 100 associates the image data of the enlarged image being displayed with the coordinate data of the auxiliary line being displayed. To the system memory 116. In the system memory 116, a predetermined number of enlarged images, for example, image data of three enlarged images can be recorded. When the user operates the left and right buttons of the multi-selector 36 while pressing the enlarged storage button 44, the rear display control unit 114 causes the rear monitor 31 to sequentially display the enlarged image and the auxiliary line recorded in the system memory 116.

  With this configuration, the user can confirm the plurality of enlarged images and determine the horizontal and vertical of the composition. For example, the user instructs the system memory 116 to record an enlarged image on the left side and an enlarged image on the right side of the building on which the same horizontal auxiliary line is superimposed, and confirms both images to correctly determine the horizontal and vertical composition. can do.

  The rear display control unit 114 may change the display mode of the auxiliary line in the enlarged display state from the display mode in the same-size display image. For example, the back display control unit 114 changes the colors of the horizontal auxiliary line 212 and the vertical auxiliary line 221 in FIG. 6B from the colors of the horizontal auxiliary line 212 and the vertical auxiliary line 221 in FIG. Examples of the display mode of the auxiliary line to be changed include line thickness, line type, and transparency in addition to the color. With this configuration, the user can easily determine whether or not the display is in the enlarged display state only by confirming the form of the auxiliary line.

  In the enlarged live view image, the subject is not in focus and the subject's edge line may be blurred, or the dark part may be enlarged and the subject's edge line may be difficult to observe. Therefore, the image processing circuit 109 performs image processing that causes a visual effect on the image of the image data for display when an enlargement instruction is received. Specifically, the image processing circuit 109 performs image processing for emphasizing the edge line of the subject in the image data for display. The image processing circuit 109 performs image processing for brightening the image of the display image data. Then, the rear display control unit 114 causes the rear monitor 31 to display an enlarged live view image using the image data that has been subjected to image processing that causes a visual effect. With this configuration, the user can easily confirm the edge line of the subject in the enlarged live view image.

  FIG. 8 is a diagram for explaining auxiliary line movement processing in the enlarged display state. Similar to the movement of the auxiliary line in the live view image at the same magnification described in FIG. 5, the auxiliary line can be moved in the enlarged live view image. Here, it is assumed that the user instructs the movement of the auxiliary line on the display screen of FIG. 8A superimposed on the live view image 300 in which the horizontal auxiliary line 212 and the vertical auxiliary line 221 are enlarged. When the user presses the upper button of the multi selector 36 while pressing the auxiliary line button 43, the rear display control unit 114 moves the horizontal auxiliary line 212 upward. When the user stops the button operation with the horizontal auxiliary line 212 coinciding with the building edge line 500, the horizontal auxiliary line 212 is arranged on the building edge line 500, as shown in FIG. 8B. Is done. Note that when the horizontal auxiliary line 212 is moved from the default position, the rear display control unit 114 changes the line type of the horizontal auxiliary line 212 to a broken line as in the process of FIG.

  Then, when the user operates the reduction button 42 to give an instruction to change the display image to the same magnification, the rear display control unit 114 moves the horizontal line of the broken line moved upward as shown in FIG. The auxiliary line group 210 and the vertical auxiliary line group 220 in the default state are superimposed and displayed on the live view image 200 at the same magnification. The horizontal auxiliary line group 210 is arranged so that the relative positional relationship between the enlarged live view image 300 and the horizontal auxiliary line 212 is maintained, that is, the horizontal auxiliary line 212 is arranged on the edge line 500 of the building. Has been moved upwards.

The amount of movement of the horizontal auxiliary line group 210 is calculated using the relational expression (2) used in the description of FIG. Specifically, the rear display control unit 114 substitutes the y-coordinate value Y ₁ of the horizontal auxiliary line 212 after the movement in the enlarged display state equation to (2), y coordinates of the horizontal auxiliary line 212 after the movement The value Y ₂₁₂ is calculated. The rear display control unit 114, moves from the y-coordinate value _{Y 212} of the horizontal auxiliary line 212 after movement calculated by subtracting the y-coordinate value _{Y 212} of the horizontal auxiliary line 212 in the default state, the horizontal auxiliary line group 210 Calculate the amount.

  By enabling the movement of the auxiliary line in the enlarged live view image, the user can accurately match the auxiliary line with the line of the subject. In addition, by maintaining the relative positional relationship between the live view image and the auxiliary line before and after the display magnification is changed, the user can correctly determine the horizontal and vertical of the composition.

  Note that the rear display control unit 114 may change the amount of movement of the auxiliary line that is moved by one operation of the cross button of the multi-selector 36 according to the display magnification. For example, the rear display control unit 114 reduces the amount of movement of the auxiliary line that is moved by one operation in the enlarged live view image as compared with the case of the live view image of the same magnification. With this configuration, the user can accurately align the auxiliary line with the line of the subject in the enlarged live view image.

  FIG. 9 is a flowchart of the photographing process of the camera 10 according to the present embodiment. This flow is started when the system control unit 100 detects an ON operation of the power switch 37. In step S101, the system control unit 100 sets the lens operation prohibition flag fg to 0. In step S102, the rear display control unit 114 causes the rear monitor 31 to display an equal-magnification live view image, and causes the auxiliary line to be superimposed on the live view image.

  In step S <b> 103, the system control unit 100 determines whether a change instruction for changing the display magnification is received by the enlargement button 41 and the reduction button 42. The system control unit 100 proceeds to step S104 when a change instruction to change the display magnification is received, and proceeds to step S108 when a change instruction to change the display magnification is not accepted. In step S104, the system control unit 100 determines whether or not the change instruction received in step S103 is a change instruction to the same magnification.

  If the change instruction received in step S103 is not a change instruction to the same magnification, the system control unit 100 proceeds to step S105 and sets the lens operation prohibition flag fg to 1. On the other hand, if the change instruction received in step S103 is an instruction to change to the same magnification, the system control unit 100 proceeds to step S106 and sets the lens operation prohibition flag fg to 0. In step S107, the rear display control unit 114 maintains the relative positional relationship between the live view image before the change and the auxiliary line as described with reference to FIGS. The view image and the auxiliary line are displayed on the rear monitor 31. In the present embodiment, the “live view image with the changed display magnification” may be the above-mentioned “actual live view image” or the above-mentioned “enlarged live view image”.

  In step S <b> 108, the system control unit 100 determines whether an auxiliary line movement instruction has been received by the auxiliary line button 43 and the multi-selector 36. The system control unit 100 proceeds to step S109 when an auxiliary line movement instruction is received, and proceeds to step S110 when an auxiliary line movement instruction is not accepted. In step S109, as described with reference to FIGS. 5 and 8, the back surface display control unit 114 changes the display of the auxiliary line in accordance with the auxiliary line movement instruction.

  In step S <b> 110, the system control unit 100 determines whether a zoom instruction has been received by the zoom lever 35. The system control unit 100 proceeds to step S111 when a zoom instruction is accepted, and proceeds to step S114 when a zoom instruction is not accepted. In step S111, the system control unit 100 determines whether or not the lens operation prohibition flag fg is zero. When the lens operation prohibition flag fg is 0, the system control unit 100 proceeds to step S112, and when the lens operation prohibition flag fg is 1, the system control unit 100 proceeds to step S113.

  In step S <b> 112, the system control unit 100 executes zoom lens drive control according to the operation of the zoom lever 35. On the other hand, in step S113, the system control unit 100 does not perform drive control of the zoom lens, and the rear display control unit 114 displays a warning to the effect that zoom processing is not performed on the rear monitor 31. That is, the system control unit 100 functions as a shooting control unit that prohibits the operation of the zoom lens, which is an optical system that forms a subject image on the image sensor 108 in the enlarged display state. Thereby, the change of the optical condition in the enlarged display state can be prohibited.

  In step S114, the system control unit 100 determines whether or not the switch SW1 of the release button 33 is turned on. The system control unit 100 proceeds to step S115 when the switch SW1 is turned on, and proceeds to step S122 when the switch SW1 remains off. In step S115, the system control unit 100 determines whether the lens operation prohibition flag fg is 0 or not. When the lens operation prohibition flag fg is 0, the system control unit 100 proceeds to step S116, and when the lens operation prohibition flag fg is 1, the system control unit 100 proceeds to step S117.

  In step S116, the system control unit 100 executes the AF function. Specifically, the system control unit 100 uses the AF evaluation function output from the contrast AF circuit 122 to perform control to move the focus lens to a position where the contrast is highest. On the other hand, in step S117, the system control unit 100 does not execute the AF function, and the rear display control unit 114 displays a warning to the effect that the AF is not performed on the rear monitor 31. That is, the system control unit 100 functions as a shooting control unit that prohibits the operation of the focus lens, which is an optical system for forming a subject image on the image sensor 108 in the enlarged display state. Thereby, the change of the optical condition in the enlarged display state can be prohibited.

  In step S118, the system control unit 100 executes the AE function to calculate an appropriate exposure value, and determines an appropriate aperture value, shutter speed, and ISO sensitivity according to the appropriate exposure value. In step S119, the system control unit 100 determines whether or not the switch SW2 of the release button 33 is turned on. When the switch SW2 is turned on, the system control unit 100 proceeds to step S120. On the other hand, if the switch SW2 is not turned on within a predetermined period of time after the switch SW1 is turned on, for example, within 5 seconds, the system control unit 100 proceeds to step S122.

  In step S120, the system control unit 100 outputs a drive signal for narrowing down to the appropriate aperture value determined in step S118 to the aperture drive circuit 103, and a drive signal for driving at the shutter speed determined in step S118 to the shutter drive circuit 107. Output. Then, the system control unit 100 amplifies the output of the image sensor 108 according to the ISO sensitivity determined in step S118.

  In step S121, the image processing circuit 109 generates image data according to the output of the image sensor 108 as described above. The compression / decompression circuit 110 converts the image data generated by the image processing circuit 109 into standardized image format image data as described above. Then, the system control unit 100 records the image data compressed by the compression / decompression circuit 110 on the memory card 113. In step S122, the system control unit 100 determines whether or not an off operation of the power switch 37 is detected. The system control unit 100 returns to step S103 if the power switch 37 is not detected to be turned off, and ends this flow if the power switch 37 is turned off.

  In the above-described embodiment, when enlarged display is executed while maintaining the relative positional relationship between the live view image and the auxiliary lines, the number of auxiliary lines decreases. Therefore, the back display control unit 114 may display a reference line for interpolating the decrease in the auxiliary line on the back monitor 31 in the enlarged display state. The reference line display process will be described below.

  FIG. 10 is a diagram for explaining the first reference line display process. On the display screen of FIG. 10A in which the horizontal auxiliary line group 210 and the vertical auxiliary line group 220 are superimposed on the live view image 200 of the same magnification, the user operates the enlarge button 41 and the multi selector 36 to enlarge the area 250. Instruct to enlarge. Then, the rear display control unit 114 superimposes and displays the horizontal auxiliary line 212 and the vertical auxiliary line 221 included in the enlarged area 250 on the enlarged live view image 300 as shown in FIG. Further, the rear display control unit 114 causes the horizontal reference line group 600 and the vertical reference line group 610 to be superimposed and displayed on the live view image 300.

  The horizontal reference line group 600 includes three horizontal reference lines 601, 602, and 603. The horizontal auxiliary line 212 and the horizontal reference lines 601 to 603 are arranged at equal intervals. The vertical reference line group 610 includes five vertical reference lines 611, 612, 613, 614, and 615. The vertical auxiliary line 221 and the vertical reference lines 611 to 615 are arranged at equal intervals. The rear display control unit 114 makes the display mode of the horizontal reference line group 600 and the vertical reference line group 610 different from the display mode of the horizontal auxiliary lines 212 and the vertical auxiliary lines 221. In the present embodiment, the rear display control unit 114 makes the thickness of the horizontal reference line group 600 and the vertical reference line group 610 thinner than the horizontal auxiliary line 212 and sets the line type to a one-dot chain line.

  When the rear display control unit 114 further receives an enlargement instruction on the display screen of FIG. 10B, the reference line is displayed on the rear monitor so that the change in the number of reference lines is within a predetermined range before and after the enlargement. 31 is displayed. For example, the back display control unit 114 maintains the number of reference lines on the display screen of FIG. 10B before enlargement even after enlargement, that is, changes the number of lines to zero. In addition, the back display control unit 114 deletes the reference line at the edge of the screen before enlargement to reduce the number of reference lines by one from before the enlargement, or adds one reference line to the edge of the screen after enlargement. May be. That is, the rear display control unit 114 displays the reference line so that the change in the number of lines before and after the enlargement is within a range of plus or minus one.

  As shown in FIG. 10C, the rear display control unit 114 arranges a broken horizontal auxiliary line 212 on the edge line 500 of the building. Further, the rear display control unit 114 moves the horizontal reference line group 600 in accordance with the movement of the horizontal auxiliary line 212. Then, the back display control unit 114 deletes the horizontal reference line 601 and adds the horizontal reference line 604 to the horizontal reference line group 600, and keeps the horizontal auxiliary line and the horizontal reference line at equal intervals.

  When the user presses the reduction button 42 on the display screen of FIG. 10C to instruct a change to a display image of the same size, the rear display control unit 114, as shown in FIG. And the vertical reference line group 610 is erased. Then, the rear display control unit 114 superimposes and displays the broken horizontal auxiliary line group 210 moved in the upward direction and the vertical auxiliary line group 220 in the default state on the live view image 200 at the same magnification. The horizontal auxiliary line group 210 is moved upward so that the enlarged horizontal auxiliary line 212 is arranged on the edge line 500 of the building.

  FIG. 11 is a diagram for explaining the second reference line display process. In the first display process described above, the reference line is moved in accordance with the movement of the auxiliary line. However, in the second display process, the position of the reference line is not changed even if the auxiliary line is moved. In the display screen of FIG. 11A in which the horizontal auxiliary line group 210 and the vertical auxiliary line group 220 are superimposed on the live view image 200 of the same magnification, the user operates the enlarge button 41 and the multi selector 36 to enlarge the area 250. Instruct to enlarge. Then, the rear display control unit 114 superimposes and displays the horizontal auxiliary line 212 and the vertical auxiliary line 221 included in the enlarged region 250 on the enlarged live view image 300 as shown in FIG. Further, the rear display control unit 114 causes the horizontal reference line group 620 and the vertical reference line group 630 to be superimposed and displayed on the live view image 300.

  The horizontal reference line group 620 includes three horizontal reference lines 621, 622, and 623. The horizontal reference lines 621 to 623 are arranged at the same positions as the horizontal auxiliary lines 211 to 213 in the default state, respectively. The vertical reference line group 630 includes five vertical reference lines 631, 632, 633, 634, and 635. The vertical reference lines 631 to 635 are arranged at the same positions as the vertical auxiliary lines 221 to 225 in the default state, respectively. The rear display control unit 114 makes the display mode of the horizontal reference line group 620 and the vertical reference line group 630 different from the display mode of the horizontal auxiliary line 212 and the vertical auxiliary line 221. In the present embodiment, the rear display control unit 114 makes the thickness of the horizontal reference line group 620 and the vertical reference line group 630 thinner than the horizontal auxiliary line 212 and sets the line type to a one-dot chain line.

  When the rear display control unit 114 receives an instruction to move the horizontal auxiliary line 212 to the edge line 500 of the building, the broken horizontal auxiliary line 212 on the edge line 500 of the building as illustrated in FIG. Place. On the other hand, the rear display control unit 114 does not change the position of the horizontal reference line group 620 even if the horizontal auxiliary line 212 is moved.

  When the user presses the reduction button 42 on the display screen of FIG. 11C to instruct a change to a display image of the same size, the rear display control unit 114, as shown in FIG. And the vertical reference line group 630 is erased. Then, the rear display control unit 114 superimposes and displays the broken horizontal auxiliary line group 210 moved in the upward direction and the vertical auxiliary line group 220 in the default state on the live view image 200 at the same magnification. The horizontal auxiliary line group 210 is moved upward so that the enlarged horizontal auxiliary line 212 is arranged on the edge line 500 of the building.

  As described with reference to FIGS. 10 and 11, by displaying the reference line together with the auxiliary line in the enlarged display state, the user can easily determine the horizontal and vertical of the composition in the enlarged display state. The reference line display process described with reference to FIGS. 10 and 11 is executed in steps S107 and S109 in the flowchart of FIG.

  As described above, the user determines the horizontal and vertical of the composition by aligning the auxiliary line with the edge line of the subject such as the edge line 500 of the building. Here, when the focus evaluation area is set across the auxiliary line that coincides with the edge line of the subject, a perspective conflict occurs in the focus evaluation area. Therefore, the system control unit 100 serving as a focus control unit changes the focus evaluation region when the auxiliary line intersects the focus evaluation region, and avoids perspective conflict in the focus evaluation region. The focus evaluation area changing process will be described below.

  FIG. 12 is a diagram for explaining the focus evaluation area changing process. On the display screen of FIG. 12A in which the horizontal auxiliary line group 210 and the vertical auxiliary line group 220 are superimposed on the live view image 200 of the same magnification, the user operates the enlarge button 41 and the multi selector 36 to enlarge the area 250. Instruct to enlarge. At this time, it is assumed that a focus evaluation area is set at a position across the building edge line 500 in the enlarged area 250. As shown in FIG. 12A, the focus evaluation area mark 700 indicating the range of the focus evaluation area is superimposed on the live view image 200. The rear display control unit 114 expands the horizontal auxiliary line 212 and the vertical auxiliary line 221 included in the enlarged area 250 according to the designation of the enlarged area 250 as shown in FIG. Is displayed in a superimposed manner. Further, the rear display control unit 114 causes the focus evaluation area mark 700 to be superimposed on the live view image 300.

  After that, when the rear display control unit 114 receives an instruction to move the horizontal auxiliary line 212 to the building edge line 500, as shown in FIG. 12C, a broken line horizontal auxiliary on the building edge line 500. Line 212 is placed. The horizontal auxiliary line 212 after movement intersects the focus evaluation area indicated by the focus evaluation area mark 700. Therefore, the system control unit 100 determines that the subject closer to the camera 10 among the upper subject and the lower subject across the horizontal auxiliary line 212 is the focus target.

  Specifically, first, the system control unit 100 performs the AF operation by moving all the focus evaluation areas above the vertical auxiliary line. Further, the system control unit 100 moves the entire focus evaluation area below the horizontal auxiliary line 212 and executes the AF operation. Next, based on the result of the AF operation, the system control unit 100 determines that a subject close to the camera 10 among subjects existing above and below the horizontal auxiliary line 212 is a focus target. In the present embodiment, the system control unit 100 determines that a building existing under the horizontal auxiliary line 212 is a focusing target.

  Then, the system control unit 100 moves the focus evaluation area below the horizontal auxiliary line 212 so that the horizontal auxiliary line 212 does not intersect the focus evaluation area. As shown in FIG. 12D, the rear display control unit 114 arranges the focus evaluation area mark 700 at the position of the focus evaluation area moved by the system control unit 100.

  In the display state of FIG. 12D, when the user presses the reduction button 42 to instruct a change to a display image of the same size, the rear display control unit 114 is moved upward as shown in FIG. The broken horizontal auxiliary line group 210 and the default vertical auxiliary line group 220 are superimposed on the live view image 200 at the same magnification. The horizontal auxiliary line group 210 is moved upward so that the horizontal auxiliary line 212 coincides with the edge line 500 of the building. The rear display control unit 114 also superimposes and displays the focus evaluation area mark 700 indicating the focus evaluation area moved below the horizontal auxiliary line 212 on the live view image 200.

  Note that when the vertical auxiliary line intersects the focus evaluation area, the system control unit 100, like the above-described processing, of the left subject and the right subject across the vertical auxiliary line, the subject closer to the camera 10 May be determined as a focus target and the focus evaluation area may be moved. Further, when the auxiliary line intersects the focus evaluation area, the system control unit 100 may receive an instruction from the user as to which direction the focus evaluation area is to be moved with respect to the auxiliary line. Good.

  The focus evaluation area changing process described with reference to FIG. 12 is executed in step S109 in the flowchart of FIG. In step S109, even when the lens operation prohibition flag fg is set to 1, the system control unit 100 drives the focus lens to execute the focus evaluation area change process.

  In the above-described embodiment, a plurality of horizontal auxiliary lines and a plurality of vertical auxiliary lines are used, but the form of the auxiliary lines is not limited to this. One horizontal auxiliary line and one vertical auxiliary line may be used for the above-described auxiliary line display processing. Further, only the horizontal auxiliary line or only the vertical auxiliary line may be used for the above-described auxiliary line display processing.

  In the above-described embodiment, the auxiliary line is superimposed and displayed on the live view image of the rear monitor 31 of the camera 10, but the present invention is not limited to this. The above-described auxiliary line display processing can also be applied to a view-type electronic viewfinder. The above-described auxiliary line display processing can also be applied to a viewfinder in which a magnifying device is attached and a liquid crystal monitor is viewed. Further, the above-described auxiliary line display processing may be applied to the transmission type liquid crystal panel of the optical viewfinder.

  In the above-described embodiment, the display control device is configured by the enlargement button 41 and the reduction button 42 that function as a reception unit, and the rear display control unit 114. The display control apparatus may be configured separately from an imaging unit that includes at least a part of an imaging element. For example, the display control device is provided in an electronic device such as a PC that can be connected to a camera including an imaging unit, displays a live view image transmitted from the camera on the display of the device, and executes the above-described auxiliary line display processing. To do. Further, the display control device may be provided in a microscope or a telescope.

  In the above-described embodiment, the interchangeable lens camera has been described as an example of the imaging device, but the present invention is not limited to this. This embodiment also applies to imaging devices such as compact digital cameras with an integrated lens optical system, mirrorless digital cameras without a mirror mechanism, video cameras, mobile phones with camera functions, and mobile games with cameras. Such a concept can be applied.

  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 said embodiment. It will be apparent to those skilled in the art that various modifications and improvements can be made to the above 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.

  The order of execution of each process such as operations, procedures, steps, and stages in the apparatus, system, program, and method shown in the claims, the description, and the drawings is particularly “before” or “prior to”. It should be noted that the output can be realized in any order unless the output of the previous process 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 means that it is essential to carry out in this order. It is not a thing.

10 Camera, 20 Interchangeable Lens, 30 Camera Body, 31 Rear Monitor, 32 Top Monitor, 33 Release Button, 34 Shooting Mode Dial, 35 Zoom Lever, 36 Multi Selector, 37 Power Switch, 38 Play Button, 39 Delete Button, 40 Menu Button, 41 Enlarge button, 42 Reduce button, 43 Auxiliary line button, 44 Enlarge memory button, 45 Rear command dial, 46 Front command dial, 100 System control unit, 101 Shooting lens, 102 Aperture mechanism, 103 Aperture drive circuit, 104 Mirror Mechanism, 105 mirror drive circuit, 106 shutter, 107 shutter drive circuit, 108 image sensor, 109 image processing circuit, 110 compression / decompression circuit, 111 memory, 112 card connector, 113 memory card, 1 4 rear display control unit, 115 upper surface display control unit, 116 system memory, 117 timer, 118 battery, 119 external interface, 120 phase difference AF element, 121 phase difference AF circuit, 122 contrast AF circuit, 123 AF area irradiation device, 124 Irradiation device drive circuit, 125 photometric device, 200 live view image, 210 horizontal auxiliary line group, 211, 212, 213, 214 horizontal auxiliary line, 220 vertical auxiliary line group, 221, 222, 223, 224, 225, 226 vertical auxiliary Line, 230 Horizontal auxiliary lines, 231, 232, 233, 234, 235 Horizontal auxiliary lines, 240 Vertical auxiliary lines, 241, 242, 243, 244, 245, 246, 247 Vertical auxiliary lines, 250 Enlarged area, 300 Live View image, 400 image display 410, superimposed display layer, 411 corresponding area, 500 edge line, 600 horizontal reference line group, 601, 602, 603, 604 horizontal reference line, 610 vertical reference line group, 611, 612, 613, 614, 615 vertical reference line , 620 Horizontal reference line group, 621, 622, 623 Horizontal reference line, 630 Vertical reference line group, 631, 632, 633, 634, 635 Vertical reference line, 700 Focus evaluation area mark

Claims (11)

A display control unit for displaying a live view image and an auxiliary line superimposed on the live view image on a display;
A reception unit that receives a change instruction to change the display magnification of the displayed live view image,
When the receiving unit receives the change instruction, the display control unit maintains a relative positional relationship between the live view image and the auxiliary line, and the live view image based on the changed display magnification. And the auxiliary line are displayed on a display device.   The display control apparatus according to claim 1, wherein the reception unit receives a movement of a display position of the auxiliary line on the display.   The display control apparatus according to claim 1, wherein the display control unit displays a reference line on the display in addition to the auxiliary line.   When the receiving unit receives an enlargement instruction, the display control unit displays the reference line so that a change in the number of reference lines is within a predetermined range before and after the enlargement instruction. The display control apparatus according to claim 3, which is displayed on the display.   The display control device according to claim 3, wherein the display control unit does not change a display position of the reference line with respect to the display.   The display control apparatus according to claim 1, wherein the display control unit changes a display mode of the auxiliary line when the receiving unit receives the change instruction.   7. The display control unit according to claim 1, wherein, when the reception unit receives the change instruction, the display unit displays the live view image subjected to image processing that causes a visual effect on the display. The display control apparatus according to item 1. An imaging unit for acquiring the live view image;
An imaging device comprising: the display control device according to claim 1.   During the period when the display control unit displays the live view image with the changed display magnification on the display, an imaging control unit that prohibits the operation of the optical system that forms an object image on the imaging unit. The imaging device according to claim 8 provided.   The imaging apparatus according to claim 8, further comprising a focus control unit that changes the focus evaluation area so that the auxiliary line does not intersect the focus evaluation area. A display step of displaying a live view image and an auxiliary line superimposed on the live view image on a display;
An accepting step of accepting a change instruction to change the display magnification of the displayed live view image;
When the change instruction is received, a relative positional relationship between the live view image and the auxiliary line is maintained, and the live view image and the auxiliary line at the changed display magnification are displayed on the display unit. A display control program for causing a computer to execute a display change step.

Images