JP5637491B2 - Imaging apparatus, imaging method, and program - Google Patents

Description

  The present invention relates to a photographing apparatus, a photographing method, and a program.

  With a conventional camera, if you try to shoot with the photographic lens zoomed to the telephoto side, as the zoom is increased, the angle of view is reduced and the surrounding scene becomes invisible. It was not easy to fit in.

  As a means for solving the above problems, as a technique for displaying an angle of view wider than the shooting angle of view on the viewfinder in order to make it easier to catch the subject, a method of separating the shooting optical system and the viewfinder optical system (for example, Patent Document 1) For example, a method of separating the image pickup device for photographing and the image pickup device for viewfinder (for example, see Patent Document 2) has been proposed.

JP-A-5-1000028 JP 2001-212360 A

  However, in the conventional techniques according to Patent Documents 1 and 2 described above, the display angle of view of the finder always remains wider than the shooting angle of view. Therefore, although it is easy to put the subject within the shooting angle of view, There was a problem that it was impossible to take a picture while observing the detailed state of the subject using high magnification, which was possible with a narrow angle of view.

  Therefore, the present invention provides a photographing apparatus, a photographing method, and a program that can easily shoot a moving subject within a photographing angle of view even during telephoto photographing and can photograph while confirming details. Objective.

For upper Symbol object achieved, an invention according to claim 1, designated a photographing means for photographing an object image, and a finder for presenting the image of the subject with respect to the photographer, the zoom magnification at the time of photographing by the photographing means A zoom magnification specifying means for performing shooting, a state immediately before execution of shooting by the shooting unit, a shooting instruction unit for instructing execution of shooting by the shooting unit, and a state immediately before execution of shooting by the shooting instruction unit are not instructed. In addition, while the operation for designating the zoom magnification at the time of shooting is not performed by the zoom magnification designating means, the angle of view for presenting the subject image by the finder is set to be larger than the zoom magnification designated by the zoom magnification designating means. a wide angle of view, when the state of the last shooting execution is instructed by the imaging instruction means, or the zoom magnification at the time of photographing by the zoom magnification designating means While the operation of the constant to have been made, the angle of presenting an object image by the finder, and the finder field angle control means for the angle of view of the designated zoom magnification by the zoom magnification designating means, by the imaging instruction means When the photographing execution is instructed, at the angle of view of the designated zoom magnification by the zoom magnification designating means, a photographing apparatus characterized by obtaining Bei and imaging control means for photographing an object image by the imaging means.

For upper Symbol object achieved, an invention according to claim 2, wherein, while checking a subject image through the viewfinder, a photographing method for photographing device for photographing by the photographing means and an object image is zoomed by the zoom function, the imaging means Zoom magnification designation step for designating a zoom magnification at the time of photographing by the state, a state immediately before execution of photographing by the photographing means, a photographing instruction step for instructing execution of photographing by the photographing means, and a state immediately before the photographing execution Is not instructed , and the angle of view for displaying the subject image by the finder is wider than the designated zoom magnification while the zoom magnification designation step is not performed to designate the zoom magnification at the time of shooting. and angle of view, when the imaging execution previous state is instructed, or the zoom magnification at the time of photographing by the zoom magnification designating step During operation of specifying is made, the angle of presenting an object image by the finder, and the finder field angle control step of the angle of view of the designated zoom magnification and the imaging execution is instructed, the in the angle of view of the designated zoom magnification, a photographing method characterized by a photographing control step of capturing an image of a subject including that by the imaging means.

For upper Symbol object achieved, an invention according to claim 3, wherein, while checking a subject image through the viewfinder, to the computer of the imaging device for photographing by the photographing means and an object image is zoomed by the zoom function, the time of photographing by the photographing means A zoom magnification designation function for designating a zoom magnification of the camera, a state immediately before execution of photographing by the photographing means, a photographing instruction function for instructing execution of photographing by the photographing means, and a state immediately before the photographing execution by the photographing instruction function. While not instructed and an operation for designating a zoom magnification at the time of shooting is not performed by the zoom magnification designating function, an angle of view for presenting a subject image by the finder is set to a zoom designated by the zoom magnification designating function. a wide angle than magnification, when the imaging instruction functions by shooting performed prior state is instructed, or the zoom While operation for designating a zoom magnification at the time of photographing by the rate specified function is displayed, the angle of presenting an object image by the finder, finder field to field angle of the designated zoom magnification by the zoom magnification designating function angle control function, when the photographing performed by the imaging instruction function is indicated, in the angle of view of the zoom magnification designated by the zoom magnification designating function, to execute the photographing control function for photographing an object image by the imaging means Turkey It is a program characterized by these.

  According to the present invention, there can be obtained an advantage that a moving subject can be easily accommodated within a shooting angle of view even during telephoto shooting, and shooting can be performed while checking details.

It is a block diagram which shows the structure of the digital camera by 1st Embodiment of this invention. 4 is a flowchart for explaining the operation of the digital camera according to the first embodiment. It is a schematic diagram which shows the state transition of the optical finder 17 in the digital camera by this 1st Embodiment. FIG. 6 is a transition diagram for explaining a series of operations of the digital camera according to the first embodiment. It is a flowchart for demonstrating operation | movement of the digital camera by this 2nd Embodiment. It is a schematic diagram which shows the state transition of the image display part 15 in the digital camera by this 2nd Embodiment. It is a flowchart for demonstrating operation | movement of the digital camera by this 3rd Embodiment. It is a flowchart for demonstrating operation | movement of the digital camera by this 4th Embodiment. It is a schematic diagram which shows the state transition of the image display part 15 in the digital camera by this 4th Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

A. First embodiment A-1. Configuration of First Embodiment FIG. 1 is a block diagram showing a configuration of a digital camera according to a first embodiment of the present invention. In the figure, a digital camera 1 includes a photographing lens 2, a lens driving unit 3, a diaphragm shutter 4, a CCD 5, and a TG (Timing).
Generator) 6, unit circuit 7, image processing unit 8, CPU 11, DRAM 12, memory 13, flash memory 14, image display unit 15, key input unit 16, optical viewfinder 17, viewfinder lens 18, transmissive liquid crystal display 19, and viewfinder A lens driving unit 20, a frame display control unit 21, a card I / F 22, and a memory card 23 are provided.

  The taking lens 2 includes a focus lens and a zoom lens, and a lens driving unit 3 is connected thereto. The lens driving unit 3 includes a motor for driving the focus lens and the zoom lens constituting the photographing lens 2 in the optical axis direction, a focus motor driver for driving the focus motor and the zoom motor according to a control signal from the CPU 11, and a zoom motor, respectively. Consists of drivers.

  The diaphragm 4 includes a drive circuit (not shown), and the drive circuit operates the diaphragm 4 in accordance with a control signal sent from the CPU 11. The diaphragm 4 controls the amount of light that enters from the taking lens 2. Further, the digital camera according to the present embodiment includes an electronic shutter mechanism (not shown), and controls the time for which light is applied to the CCD 5 by the electronic shutter mechanism.

  A CCD (imaging device) 5 converts light of a subject projected via the photographing lens 2, the diaphragm 4, and an electronic shutter mechanism (not shown) into an electrical signal, and outputs the electrical signal to the unit circuit 7. The CCD 5 is driven according to a timing signal having a predetermined frequency generated by the TG 6.

The unit circuit 7 is a CDS (Correlated) that holds the imaging signal output from the CCD 5 by correlated double sampling.
Double Sampling) circuit, AGC (Automatic) for automatic gain adjustment of the imaged signal after sampling
(Gain Control) circuit and an A / D converter for converting an analog image pickup signal after the automatic gain adjustment into a digital signal. The imaging signal of the CCD 5 is sent to the image processing unit 8 as a digital signal through the unit circuit 7. The unit circuit 7 is connected to the TG 6.

  The image processing unit 8 performs image processing (pixel interpolation processing, γ correction, luminance color difference signal generation, white balance processing, exposure correction processing, etc.) of image data sent from the unit circuit 7, and compression / decompression of image data ( For example, JPEG format, M-JPEG format, or MPEG format compression / decompression processing is performed. Note that a TG 6 is connected to the image processing unit 8.

  The CPU 11 is a one-chip microcomputer that controls each part of the digital camera 1. In particular, in the first embodiment, before the shutter SW is pressed, the CPU 11 positions the zoom lens of the optical finder 17 so that a field angle wider than the field angle of the zoom magnification specified by the zoom operation can be presented. When the shutter switch is half-pressed, the zoom position is controlled again so that the field angle of view and the field angle of the optical viewfinder 17 are matched. Since the half-pressing operation of the shutter SW is also used for focusing in the conventional camera, it is possible to check the surroundings of the shooting angle of view while maintaining the operational feeling.

  The DRAM 12 is used as a buffer memory for temporarily storing image data sent to the CPU 11 after being photographed by the CCD 5 and also as a working memory for the CPU 11. The memory 13 stores a program necessary for controlling each part of the digital camera 1 by the CPU 11 and data necessary for controlling each part, and the CPU 11 performs processing according to this program. The flash memory 14 and the memory card 23 are recording media for storing image data taken by the CCD 5.

  The image display unit 15 includes a color LCD and its driving circuit, and displays the subject photographed by the CCD 5 as a through image when in the photographing standby state. When reproducing the recorded image, the flash memory 14 or the memory card 23 is displayed. The recorded image read out and decompressed is displayed. The key input unit 16 includes a plurality of operation keys such as a shutter SW, a zoom SW, a mode key, a SET key, and a cross key, and outputs an operation signal corresponding to the user's key operation to the CPU 11.

  The optical finder 17 includes a finder lens 18 and a transmissive liquid crystal display 19. The finder lens 18 includes a focus lens and a zoom lens, and a finder lens driving unit 20 is connected thereto. The finder lens driving unit 20 includes a zoom motor that drives the zoom lens constituting the finder lens 18 in the optical axis direction, and a zoom motor driver that drives the zoom motor according to a control signal from the CPU 11. In other words, the present embodiment is characterized in that the zoom lens of the optical viewfinder 17 can be controlled independently of the zoom lens of the photographing lens 2. The position of the focus lens in the optical viewfinder 17 can be adjusted manually.

  The transmissive liquid crystal display 19 is a liquid crystal display that transmits the optical image that has passed through the finder lens 18 as it is. The transmissive liquid crystal display 19 changes the photographic field angle photographed by the CCD 5 through the photographing lens 2 according to the control of the frame display control unit 21. The angle of view frame to be displayed is displayed. The frame display control unit 21 controls display / non-display of the field angle frame of the transmissive liquid crystal display 19 in accordance with a control signal from the CPU 11.

  A memory card 23 is detachably attached to the card I / F 22 in a card slot (not shown) of the digital camera 1 main body.

A-2. Operation of First Embodiment Next, the operation of the first embodiment described above will be described.
FIG. 2 is a flowchart for explaining the operation of the digital camera according to the first embodiment. 3A to 3D are schematic views showing state transition of the optical finder 17 in the digital camera according to the first embodiment.

  First, initialization processing such as clearing of a zoom value and setting of initial positions of various lenses, which will be described later, is performed (step S10), it is determined whether the zoom SW has been operated (step S12), and when the zoom SW has been operated. Stores the zoom value corresponding to the operation amount of the zoom SW (step S14). Next, the zoom lens of the photographing lens 2 is moved to a position corresponding to the zoom value by the lens driving unit 3 (step S16). The subject image that has passed through the photographic lens 2 is subjected to predetermined processing by the CCD 5, the unit circuit 7, and the image processing unit 8, and then displayed on the image display unit 15 as a through image.

  Next, the position of the zoom lens of the optical finder 17 is adjusted by the finder lens driving unit 20 so that the maximum wide angle or the angle of view of the zoom value −α is (a little wider) (step S18), and frame display control is performed. The field angle frame F corresponding to the zoom value is displayed on the transmissive liquid crystal display 19 by the unit 21 (step S20). Then, it returns to step S12 and repeats the process mentioned above.

  In the above operation, when the zoom SW is not operated, the state of the shutter SW (no operation, half-pressed, fully pressed) is determined (step S22). If there is no shutter SW operation, step S18 and step S20 are repeated.

  That is, when the shutter SW is not operated, as shown in FIGS. 3A and 3B, the subject image is displayed on the image display unit 15 at an angle of view of a zoom value corresponding to the operation amount of the zoom SW. On the other hand, in the optical finder 17, the subject image can be viewed at the maximum wide angle or the (a little wider) angle of view with the zoom value −α, and the angle of view frame F corresponding to the zoom value is displayed. Will continue. Therefore, since the user can confirm the surroundings of the shooting angle of view, it is easy to fit a moving subject within the shooting angle of view even during telephoto shooting.

  On the other hand, when the user performs a desired zoom operation and then presses the shutter SW halfway, the zoom lens of the optical viewfinder 17 is moved by the finder lens driving unit 20 to a position corresponding to the stored zoom value. (Step S24), the view angle frame F displayed on the transmissive liquid crystal display 19 is deleted by the frame display control unit 21 (Step S26). Thereafter, AF (autofocus) processing is performed (step S28), the process returns to step S12, and the above-described processing is repeatedly executed.

  That is, when the shutter SW is half-pressed, the subject image is displayed on the image display unit 15 at an angle of view of the zoom value corresponding to the operation amount of the zoom SW, as shown in FIG. The optical viewfinder 17 is in a state in which the subject image that has been changed to the angle of view corresponding to the zoom operation, that is, the shooting angle of view, from the maximum wide angle or the (a little wider) angle of view of the zoom value −α. Thus, since the subject is enlarged after the shutter SW is half-pressed, details can be confirmed.

  When the user releases the shutter SW again in this half-pressed state, the process proceeds from step S22 to steps S18 and S20, and the optical viewfinder 17 zooms in with a maximum wide angle or a field angle with a zoom value −α (a little wider). The view angle frame F corresponding to the value is displayed again. That is, every time the half-press is released, the state returns to the state shown in FIG. 3C from FIG. 3B, so that the user can confirm the surroundings of the shooting angle of view. It is possible to return to a state where it can be easily accommodated within the shooting angle of view.

  On the other hand, in the half-pressed state, when the user who has confirmed the subject (details) enlarged to the shooting angle of view by the optical viewfinder 17 fully presses the shutter SW to take a picture, at that time, the shooting lens 2 is moved. The passed subject image is taken in as photographed image data by the CCD 5, subjected to predetermined processing by the unit circuit 7 and the image processing unit 8, and then stored in the flash memory 14 (step S30). Then, it returns to step S12 and repeats the process mentioned above.

  That is, when the shutter SW is fully pressed, as shown in FIG. 3D, the subject image is displayed on the image display unit 15 with the angle of view of the zoom value corresponding to the operation amount of the zoom SW. In addition, the photographing operation is executed in a state where the optical viewfinder 17 can see the subject image changed to the angle of view according to the zoom operation, that is, the photographing field angle.

  4A to 4H are transition diagrams for explaining a series of operations of the digital camera according to the first embodiment. Before pressing the shutter SW, as shown in FIGS. 4 (a) and 4 (b), the subject is placed within the shooting angle of view using a wide angle of view. Next, as shown in FIG. 4C, shooting preparation is performed by half-pressing the shutter SW.

  At this time, as shown in FIG. 4 (d), when the subject comes out of the shooting angle of view, as shown in FIGS. 4 (e) and 4 (f), the shutter SW is released and the wide image is again displayed. Use the corners to keep the subject within the angle of view. When the subject falls within the shooting angle of view, as shown in FIG. 4G, the subject is enlarged to the shooting size again by half-pressing the shutter SW and finely adjusted. As shown in (), shooting is performed by fully pressing the shutter switch.

  In this way, according to the first embodiment, it is possible to easily fit a moving subject during telephoto shooting within the shooting angle of view.

  According to the first embodiment described above, the subject can be confirmed at the maximum wide angle or the angle of view with a zoom value −α (a little wider) before the shutter SW is half-pressed, so even during telephoto shooting. A moving subject can be easily accommodated within the shooting angle of view. In addition, a high-quality image can be taken at the maximum optical magnification of the taking lens 2. Further, after half-pressing the shutter switch SW, the angle of view becomes the angle of view at that time, and the subject is enlarged, so that it is possible to take a picture while checking details.

B. Second Embodiment Next, a second embodiment of the present invention will be described.
The second embodiment assumes a case in which, without using the zoom mechanism of the optical viewfinder 17 and the photographing lens 2, the angle of view is adjusted by digital zooming while viewing a through image displayed on the image display unit 15, and photographing is performed. ing. The configuration of the digital camera 1 is the same as that shown in FIG.

  FIG. 5 is a flowchart for explaining the operation of the digital camera according to the second embodiment. 6A to 6D are schematic views showing state transition of the image display unit 15 in the digital camera according to the second embodiment.

  First, initialization processing such as clearing the zoom value and setting initial positions of various lenses is performed (step S40), it is determined whether or not the zoom SW has been operated (step S42), and if the zoom SW has been operated, A zoom value corresponding to the operation amount of the zoom SW is stored (step S44). Next, the output image of the CCD 5 is cut out and displayed on the entire image display unit 15 so that the maximum wide angle or the angle of view of the zoom value −α (a little wider) is obtained (step S46), and the zoom value corresponds to the zoom value. The view angle frame F is displayed (step S48). Then, it returns to step S42 and repeats the process mentioned above.

  In the above operation, when the zoom SW is not operated, the state of the shutter SW (no operation, half-pressed, fully pressed) is determined (step S50). If the shutter SW is not operated, the output image of the CCD 5 is cut out on the entire image display unit 15 so that the maximum wide angle or the zoom angle −α (a little wider) is obtained in step S46. In step S48, the view angle frame F corresponding to the zoom value is displayed, and the process returns to step S42.

  That is, when there is no operation of the shutter SW, as shown in FIG. 6A, the subject image is viewed on the image display unit 15 at the maximum wide angle or the (a slightly wider) angle of view with the zoom value −α. The angle of view frame F corresponding to the zoom value can be displayed. Therefore, since the user can confirm the surroundings of the shooting angle of view, it is easy to fit a moving subject within the shooting angle of view even during telephoto shooting.

  On the other hand, when the user performs the desired zoom operation and then presses the shutter switch halfway, the output image of the CCD 5 is cut out and displayed on the image display unit 15 at the angle of view corresponding to the stored zoom value. (Step S52), the angle of view frame F is deleted (Step S54). Thereafter, AF (autofocus) processing is performed (step S56), the process returns to step S42, and the above-described processing is repeatedly executed.

  That is, when the shutter SW is half-pressed, as shown in FIG. 6C, the image display unit 15 operates the zoom SW from the maximum wide angle or the (a little wider) angle of view of the zoom value −α. A subject image cut out by changing the angle of view according to the amount is displayed. Thus, since the subject is enlarged after the shutter SW is half-pressed, details can be confirmed.

  When the user releases the shutter SW again in this half-pressed state, the process proceeds from step S50 to steps S46 and S48, and the image corresponding to the zoom value is obtained with the maximum wide angle or the zoom angle-α (a little wider) angle of view. The state returns to the state in which the square frame F is displayed. That is, every time the half-press is released, the state returns to the state shown in FIG. 6C from FIG. 6B, so that the user can confirm the surroundings of the shooting angle of view, so that the moving subject can be viewed even during telephoto shooting. It is possible to return to a state where it can be easily accommodated within the shooting angle of view.

  On the other hand, when the user who has confirmed the subject (details) displayed on the image display unit 15 in the half-pressed state fully presses the shutter SW to take a picture, at that time (in step S52), the output of the CCD 5 Image data cut out from the image at the angle of view of the zoom value is captured as captured image data and stored in the flash memory 14 (step S58).

  That is, when the shutter SW is fully pressed, as shown in FIG. 6D, the subject image is displayed on the image display unit 15 with the angle of view of the zoom value corresponding to the operation amount of the zoom SW. The photographing process is executed.

  According to the above-described second embodiment, the subject can be confirmed at the maximum wide angle or the angle of view with a zoom value −α (a little wider) before the shutter SW is half-pressed. However, it is possible to easily fit a moving subject within the shooting angle of view. Further, after half-pressing the shutter switch SW, the angle of view becomes the angle of view at that time, and the subject is enlarged, so that it is possible to take a picture while checking details. In the second embodiment, an output image of the CCD is cut out at an angle of view corresponding to the zoom value, and a digitally zoomed image is used as a captured image. Therefore, although it is inferior to optical zoom in terms of image quality, a high-resolution CCD has recently been developed. Therefore, sufficient image quality can be obtained depending on the shooting application.

C. Third Embodiment Next, a third embodiment of the present invention will be described.
The third embodiment is the same as the second embodiment described above in that the optical viewfinder 17 is not used, but the through image displayed on the image display unit 15 using the zoom function of the photographing lens 2. Assuming that you are shooting while watching. The configuration of the digital camera 1 is the same as that shown in FIG.

  FIG. 7 is a flowchart for explaining the operation of the digital camera according to the third embodiment. The state transition of the image display unit 15 in the digital camera according to the third embodiment is the same as that shown in FIGS.

  First, initialization processing such as clearing of the zoom value and initial position setting of various lenses is performed (step S60), it is determined whether the zoom SW has been operated (step S62), and if the zoom SW has been operated, The zoom value corresponding to the operation amount of the zoom SW is stored (step S64). Next, the output image of the CCD 5 is cut out and displayed on the entire image display unit 15 so that the maximum wide angle or the angle of view of the zoom value −α (a little wider) is obtained (step S66), and corresponds to the zoom value. The view angle frame F is displayed (step S68). Thereafter, the process returns to step S62, and the above-described processing is repeatedly executed.

  In the above operation, when the zoom SW is not operated, the state of the shutter SW (no operation, half-pressed, fully pressed) is determined (step S70). If the shutter SW is not operated, the output image of the CCD 5 is cut out and displayed on the entire image display unit 15 in step S66 so that the maximum wide angle or the zoom angle −α (a little wider) is obtained. In step S68, the field angle frame F corresponding to the zoom value is displayed, and the process returns to step S62.

  That is, when there is no operation of the shutter SW, the subject image can be viewed on the image display unit 15 at the maximum wide angle or the (a slightly wider) angle of view with the zoom value −α, and the image corresponding to the zoom value is displayed. The state where the corner frame F is displayed is continued. Therefore, since the user can confirm the surroundings of the shooting angle of view, it is easy to fit a moving subject within the shooting angle of view even during telephoto shooting.

  On the other hand, when the user performs the desired zoom operation and then presses the shutter switch halfway, the output image of the CCD 5 is cut out and displayed on the image display unit 15 at the angle of view corresponding to the stored zoom value. (Step S72), the field angle frame F is deleted (Step S74). Thereafter, the process returns to step S62, and the above-described processing is repeatedly executed.

  That is, when the shutter SW is half-pressed, the image display unit 15 changes the angle of view from the maximum wide angle or the zoom value −α (a little wider) to a zoom value according to the operation amount of the zoom SW. The changed subject image is displayed. Thus, since the subject is enlarged after the shutter SW is half-pressed, details can be confirmed.

  When the user releases the shutter SW again in this half-pressed state, the process proceeds from step S70 to steps S66 and S68, and an image corresponding to the maximum wide angle or zoom angle-α (a little wider) angle and the zoom value. The state returns to the state in which the square frame F is displayed. That is, every time the half-press is released, the angle of view of the zoom value returns to the state of the maximum wide angle or the angle of view (a little wider) of the zoom value −α, so that the user can check the surroundings of the shooting angle of view. Therefore, it is possible to return to a state in which a subject that is moving even during telephoto shooting can be easily stored within the shooting angle of view.

  On the other hand, when the user who has confirmed the subject (details) displayed on the image display unit 15 in the half-pressed state fully presses the shutter SW to take a picture, the zoom lens of the taking lens 2 is turned on at that time. Then, the lens drive unit 3 moves to a position corresponding to the stored zoom value (step S76), performs AF (autofocus) processing (step S78), and shoots the subject image passing through the taking lens 2 with the CCD 5. The data is taken in as image data, subjected to predetermined processing by the unit circuit 7 and the image processing unit 8, and then stored in the flash memory 14 (step S80). Thereafter, the zoom lens of the photographic lens 2 is moved so as to have the maximum wide angle (step S82), the process returns to step S62, and the above-described processing is repeatedly executed.

  That is, the zoom lens of the photographic lens 2 is not driven until the shutter SW is fully pressed, and the zoom lens of the photographic lens 2 is moved to the position corresponding to the zoom value only when the shutter SW is fully pressed. Thus, the photographing operation is executed.

  According to the third embodiment described above, in addition to the effects of the second embodiment, the zoom lens of the photographing lens 2 is moved to a position corresponding to the zoom operation during the main photographing, so that power consumption can be reduced. Since the optical zoom is used, a high-quality image can be taken at the maximum optical magnification of the taking lens 2.

D. Fourth Embodiment Next, a fourth embodiment of the present invention will be described.
In the fourth embodiment, when the zoom SW is operated, the optical finder 17 is displayed at an angle of view corresponding to the zoom value, and when the zoom SW is not operated, the fourth embodiment is the maximum wide angle, Alternatively, the position of the zoom lens of the optical viewfinder 17 is adjusted so that the angle of view is a (slightly wider) zoom value −α. The configuration of the digital camera 1 is the same as that shown in FIG.

  FIG. 8 is a flowchart for explaining the operation of the digital camera according to the fourth embodiment. FIGS. 9A to 9D are schematic views showing state transition of the optical finder 17 in the digital camera according to the fourth embodiment.

  First, initialization processing such as clearing the zoom value and setting initial positions of various lenses is performed (step S90), it is determined whether or not the zoom SW has been operated (step S92), and if the zoom SW has been operated, The zoom value corresponding to the operation amount of the zoom SW is stored (step S94). Next, the zoom lens of the photographic lens 2 is moved by the lens driving unit 3 to a position corresponding to the stored zoom value (step S96), and the zoom lens of the optical viewfinder 17 is also corresponding to the zoom value. The position is moved to the position by the finder lens driving unit 20 (step S98), and the view angle frame F displayed on the transmissive liquid crystal display 19 is deleted by the frame display control unit 21 (step S100). Thereafter, the process returns to step S92, and the above-described processing is repeatedly executed.

  In the above operation, when the zoom SW is not operated, the state of the shutter SW (no operation, half-pressed, fully pressed) is determined (step S102). When there is no operation of the shutter SW, the position of the zoom lens of the optical finder 17 is adjusted by the finder lens driving unit 20 so that the maximum wide angle or the angle of view (a little wider) of the zoom value −α is obtained. Then, the frame display control unit 21 displays the angle of view frame F corresponding to the zoom value on the transmissive liquid crystal display 19 (step S106). Thereafter, the process returns to step S92, and the above-described processing is repeatedly executed.

  That is, during operation of the zoom SW, as shown in FIGS. 9A and 9B, the optical finder 17 can be viewed at an angle of view corresponding to the zoom value, and when the zoom SW is not operated, As shown in FIG. 9C, the image can be viewed at the maximum wide angle or at a (a little wider) angle of view with a zoom value −α. In this way, by changing the angle of view in the optical viewfinder 17 according to the operation / non-operation of the zoom SW, it becomes easier to keep the moving subject within the shooting angle of view even during telephoto shooting. Can be confirmed.

  On the other hand, when the user performs a desired zoom operation and then presses the shutter SW halfway, the zoom lens of the optical viewfinder 17 is moved by the finder lens driving unit 20 to a position corresponding to the stored zoom value. (Step S108), the frame display control unit 21 erases the view angle frame F displayed on the transmissive liquid crystal display 19 (Step S110). Thereafter, AF (autofocus) processing is performed (step S112), the process returns to step S92, and the above-described processing is repeatedly executed.

  That is, when the shutter SW is half-pressed, as shown in FIG. 9D, the subject image is displayed on the image display unit 15 with the angle of view of the zoom value corresponding to the operation amount of the zoom SW. The optical viewfinder 17 is in a state in which the subject image that has been changed to the angle of view corresponding to the zoom operation, that is, the shooting angle of view, from the maximum wide angle or the (a little wider) angle of view of the zoom value −α. Thus, since the subject is enlarged after the shutter SW is half-pressed, details can be confirmed.

  When the user releases the shutter SW again in this half-pressed state, the process proceeds from step S102 to steps S104 and S106, and the optical viewfinder 17 zooms in with the maximum wide angle or the angle of view with a zoom value −α (a little wider). The view angle frame F corresponding to the value is displayed again. That is, every time the half-press is released, the state returns from the state shown in FIG. 9D to the state shown in FIG. 9C, so that the user can check the surroundings of the shooting angle of view and shoot a moving subject even during telephoto shooting. It is possible to return to a state where it can be easily accommodated within the angle of view.

  On the other hand, in the half-pressed state, when the user who has confirmed the subject (details) enlarged to the shooting angle of view by the optical viewfinder 17 fully presses the shutter SW to take a picture, at that time, the shooting lens 2 is moved. The passed subject image is taken in as photographed image data by the CCD 5, subjected to predetermined processing by the unit circuit 7 and the image processing unit 8, and then stored in the flash memory 14 (step S114). Then, it returns to step S92 and repeats the process mentioned above.

  In other words, when the shutter SW is fully pressed, the image display unit 15 performs a zoom operation with the optical viewfinder 17 in a state in which the subject image is displayed with the angle of view of the zoom value corresponding to the operation amount of the zoom SW. The shooting operation is executed in a state in which the subject image changed to the angle of view corresponding to the image, that is, the shooting angle of view can be seen.

  According to the fourth embodiment described above, by changing the angle of view in the optical viewfinder 17 according to the operation / non-operation of the zoom SW, the subject image can be confirmed at the shooting angle of view even during the zoom operation. An object that is moving even during telephoto shooting can be easily set within the shooting angle of view. Since the subject can be confirmed at the maximum wide angle or the angle of view with a zoom value of −α (a little wider) before the shutter SW is half-pressed, the moving subject can be easily photographed even during telephoto shooting. It can fit within the angle of view. In addition, a high-quality image can be taken at the maximum optical magnification of the taking lens 2. Further, after half-pressing the shutter SW, the angle of view at that time becomes the angle of view, and the subject is enlarged, so that it is possible to shoot while confirming details.

  In the first to fourth embodiments described above, the shutter SW may not be a two-step operation of half-pressing and full-pressing. For example, “a finger touched / a switch pressed” may be used, or “a pressure sensor may be used to check the magnitude of the pressing force”.

  In the first and fourth embodiments described above, the optical viewfinder 17 is used. However, the present invention is not limited to this, and an electronic viewfinder provided with display means such as a liquid crystal display may be used. However, when the electronic viewfinder is used, the output image output from the CCD is usually displayed on the display means of the electronic viewfinder, so that the subject within the shooting angle of view is confirmed, so the second embodiment of the present invention. As in the third embodiment, the present invention is applied to a case where a digital zoom is performed in which the entire image is cut out from the output image of the CCD imaged at the maximum wide angle.

1 Digital Camera 2 Shooting Lens 3 Lens Drive Block 4 Shutter / Shutter 5 CCD
6 TG
7 Unit Circuit 8 Image Processing Unit 11 CPU
12 DRAM
DESCRIPTION OF SYMBOLS 13 Memory 14 Flash memory 15 Image display part 16 Key input part 17 Optical finder 18 Finder lens 19 Transmission type liquid crystal display 20 Finder lens drive part 21 Frame display control part 22 Card I / F
23 Memory card

Claims (3)

Photographing means for photographing a subject image;
A viewfinder for presenting the subject image to the photographer;
Zoom magnification designation means for designating a zoom magnification at the time of photographing by the photographing means;
A state immediately before execution of shooting by the shooting unit, and a shooting instruction unit for instructing execution of shooting by the shooting unit;
While the state immediately before the execution of shooting is not instructed by the shooting instruction means , and the zoom magnification specifying means is not operated to specify the zoom magnification at the time of shooting, the angle of view for presenting the subject image by the finder is changed. , and wide angle of view than the specified zoom magnification by the zoom magnification designating means,
An angle of view for presenting a subject image by the finder when the state immediately before the execution of shooting is instructed by the shooting instruction unit or while an operation for specifying the zoom magnification at the time of shooting is being performed by the zoom magnification specifying unit. Finder field angle control means for setting the angle of view of the zoom magnification designated by the zoom magnification designation means,
When the photographing performed by the imaging instruction means is instructed, at the angle of view of the designated zoom magnification by the zoom magnification designating means, and wherein the obtaining Bei and imaging control means for photographing an object image by the imaging means Shooting device. A photographing method of a photographing apparatus for photographing a subject image zoomed by a zoom function with a photographing means while checking a subject image with a finder,
A zoom magnification designation step for designating a zoom magnification at the time of photographing by the photographing means;
A state immediately before execution of imaging by the imaging unit, and an imaging instruction step for instructing execution of imaging by the imaging unit;
While the state immediately before the shooting is not instructed and the operation for specifying the zoom magnification at the time of shooting is not performed in the zoom magnification specifying step , the angle of view for presenting the subject image by the finder is specified. a wide angle of view than the zoom magnification,
When the state immediately before the execution of the shooting is instructed , or while the operation for specifying the zoom magnification at the time of shooting is performed in the zoom magnification specifying step , the angle of view for presenting the subject image by the finder is specified. A finder field angle control step for setting the angle of view of the zoom magnification,
When the imaging execution is instructed, at the angle of view of the designated zoom magnification, imaging wherein the including that an imaging control step of photographing the object image by the imaging means. While confirming the subject image with the viewfinder, the image of the subject image zoomed with the zoom function is photographed by the photographing device computer.
A zoom magnification designation function for designating a zoom magnification at the time of photographing by the photographing means;
A shooting instruction function for instructing execution of shooting by the shooting unit;
While the state immediately before shooting is not instructed by the shooting instruction function and the operation for specifying the zoom magnification at the time of shooting is not performed by the zoom magnification specifying function, the angle of view for presenting the subject image by the finder is changed. , and wide angle of view than the specified zoom magnification by the zoom magnification specified functions,
An angle of view for presenting a subject image by the finder when the state immediately before the execution of the shooting is instructed by the shooting instruction function or while an operation for specifying the zoom magnification at the time of shooting is being performed by the zoom magnification specifying function. Finder angle-of-view control function that sets the angle of view of the zoom magnification designated by the zoom magnification designation function,
When the photographing performed by the imaging instruction function is indicated, in the angle of view of the zoom magnification designated by the zoom magnification specified functions, and features a Turkey to execute the photographing control function for photographing an object image by the imaging means Program to do.

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