JP2010271733A - Stereoscopic image photographing method and device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photographing method and a photographing device directly performing accurate distance measurement and brightness measurement and performing optimal focus adjustment, diaphragm adjustment, shutter speed adjustment and the like, thereby achieving optimal photographing. <P>SOLUTION: Video light L for a left eye made incident from a transom window 44 is directly captured to a roughly half of a photographic lens 2 corresponding to the video for the left eye without being reflected by a mirror. Mirrors 13 and 14 are arranged opposite to each other between the transom window 44 and the photographic lens 2 via the video light L for the left eye. Each of angles of the mirrors 13 and 14 is set to an angle at which video light R for a right eye made incident from the transom window 44 is captured to roughly other half of the photographic lens 2. The operation (focusing or the like) of a digital camera 37 is adjusted based on the video light L for the left eye. In this case, a control signal is input from a CPU 61 to a position adjusting means 62 of the photographic lens 2, and the position of the photographic lens 2 is adjusted by the position adjusting means of the photographic lens. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a stereoscopic image (three-dimensional image) photographing method using a photographing device such as a video camera incorporating a solid-state imaging device (CCD: Charge Coupled Device), and the device.

  Up to now, a four-mirror system disclosed in Japanese Patent Application Laid-Open No. 11-146424 has been known as a three-dimensional image capturing device used for photographing a three-dimensional image.

This four-mirror system combines four mirrors in the center of the photographic lens when capturing an image with parallax by attaching an optical attachment for stereoscopic image shooting such as still images or moving images to one video camera. The video with parallax is divided into left and right and captured as shown in FIG. Then, the pair of left and right stereoscopic video images are enlarged twice as shown in FIGS. 11B and 11C by image processing ( _AL , A _R ), converted into field sequential stereoscopic video signals, and displayed on the display screen. And can be stereoscopically viewed with shutter glasses or the like.

  When the left and right images are magnified twice by image processing in this way, the parallax is also emphasized by a factor of two, which may cause eye fatigue and the amount of parallax also changes depending on the size of the display. The amount of parallax becomes large.

  In Japanese Patent Laid-Open No. 11-46373 (Patent Document 1), the present applicant has already disclosed a stereoscopic image capturing device (hereinafter referred to as “stereoscopic image capturing device”) that can obtain a stereoscopic image that does not impose a burden on the eyes while minimizing the amount of parallax. (Referred to as an application device).

  An example of this prior application apparatus will be described with reference to FIGS. 12 to 15. First, FIG. 12 shows internal components housed in an optical attachment attached to a video camera, and an image of 2θ at the center point 10 of the entrance pupil. The L image 11 is incident directly toward the center point 10 and is taken in as an L image for the left eye by a camera photographed with a corner.

  On the other hand, the R image 12 is reflected by the mirrors 13 and 14 twice, enters toward the center point 10, and is taken in as an R image for the right eye. In this case, the R image 12 is equivalent to being incident toward the broken line intersection 15. At this time, the distance d between R and L is reduced to about ¼ compared to the above-described four-mirror system.

  Here, the right end portion 14 </ b> R of the mirror 14 is on the optical axis 16 of the photographing lens 2, and the inclination angle of the R image 12 incident at the same angle as the L image 11 together with the inclination angle of the mirror 13 is the center point 10. It is set to enter. Further, the left end portion 13L of the mirror 13 can be brought close to the optical axis 16 as long as the left ray 17 of the L-side video information is not obstructed, and the optical attachment can be greatly reduced in size.

  As a specific example, when designed for a camera having a focal length of 6 mm (horizontal angle of view of 43 ° with a 1/3 inch CCD) and an entrance pupil of 35 mm from the front surface of the photographing lens, d is about 20 mm. Become. That is, the same parallax can be obtained as when two cameras were photographed 20 mm apart. In the video obtained by this attachment, the left and right half images are each doubled by the image processing disclosed in Japanese Patent Application No. 7-334423, so that the parallax is also doubled. For this reason, it is equivalent to photographing two cameras 40 mm apart. This is somewhat smaller since the average left-right eye width of a person is 65 mm, but the effect of stereoscopic vision can be sufficiently obtained.

The amount of parallax varies depending on the size of the display, which will be described with reference to FIGS. 13, two cameras 20L, the distance 20R and _{d 1,} the camera 20L, and shows the positional relationship at the time of photographing A, C, B and an object arranged in order of proximity to 20R.

  When convergence (intersection of the optical axis centers of the left and right cameras) is set to C, L and R images can be obtained from the respective cameras as shown in FIGS. 13B and 13C. When these are converted into field sequential signals and reproduced on the display 21 as shown in FIG. 14 and viewed with the shutter glasses 22 so that the L video only enters the left eye and the R video only enters the right eye, C is positioned on the display 21, A is positioned in front of the display 21, and B is positioned in the back of the display 21.

  Here, it can be seen that all the parallax is expanded in the horizontal direction when the video information is kept as it is and is reproduced on a larger display 23 as shown in FIG. As a result, the position of the image moves in the direction indicated by the arrow. In this case, if the interval b between the B images exceeds the human eye width (about 65 mm), fusion becomes difficult. If the amount of parallax is not appropriate, it may cause fatigue in stereoscopic viewing.

  With respect to this point, it is only necessary to refer to the amount of parallax in a method that brings about a sense of depth by using the Pullfrich effect for an image that moves in the left-right direction. That is, when an ND filter is attached to one eye to weaken the light, a transmission delay to the cerebrum occurs, and an image with a time difference between the left and right eyes is processed by the cerebrum and stereoscopically viewed. Although the delay is about 10 msec, a natural three-dimensional effect is obtained even at a movement of 1 m per second. In this case, this is equivalent to a camera interval of 100 × 0.01 = 1 cm. From this, it is understood that the minimum necessary amount of parallax is sufficient for stereoscopic viewing. Although limited by the size of the lens and its horizontal field angle, photographing with a parallax amount equal to or less than the 3D (three-dimensional) optical attachment to which the prior application device is applied cannot be performed by other means.

  As described above, according to the prior application device, in the video equipment that captures a stereoscopic image, the image for one of the eyes incident from the single daylighting window is reflected on the right half of the photographing lens without being reflected by the mirror. The first eye and the second mirror are arranged to face each other directly through the image light for the one eye between the daylighting window and the photographing lens, and the image light for the other eye that is incident from the daylighting window. The angles of the first and second mirrors are set to angles that are taken into the left half of the taking lens by reflection. As a result, the amount of parallax can be reduced to 1/3 to 1/4 compared to the four-mirror method, and photography can be performed with a deviation of ± 1.5 cm (on a 32-inch monitor) from near to infinity without adjustment. As a result, a stereoscopic image with less burden on the eyes can be obtained.

  The invention of the prior application has the above-described excellent features, but there are the following problems when adjusting the focus (focus) of the camera by the incident light from the optical attachment (stereoscopic image capturing device). found.

  That is, the image light L for the left eye is directly incident (forms a through image) without passing through the mirrors 13 and 14, whereas the image light R for the right eye reflects the mirror twice and Since the optical path length is also large, the amount of incident light tends to decrease. For this reason, if the camera focus (focus) and brightness are adjusted using the image light R for the right eye, the error factor increases, the adjustment cannot be performed properly, and a malfunction may occur. is there.

  An object of the present invention is to provide a photographing method capable of performing optimum photographing by performing distance measurement, brightness measurement, and the like, and performing optimum focus adjustment, aperture adjustment, shutter speed adjustment, and further white balance adjustment. It is to provide the device.

That is, the present invention uses a stereoscopic image capturing means so that an image for one eye is positioned in approximately one half of the screen and an image for the other eye is positioned in approximately the other half of the screen. In the method of shooting a stereoscopic image by
Without reflecting the image light for the one eye incident from a single daylighting window with a mirror, it is directly taken into one half of the photographing lens corresponding to the image for the one eye,
Between the daylighting window and the photographing lens, a plurality of mirrors are arranged opposite to each other via the image light for the one eye,
The three-dimensional image capturing means is configured to set the angles of the plurality of mirrors to angles at which the image light for the other eye incident from the lighting window is captured by the other half of the photographing lens by reflection. And
The present invention relates to a stereoscopic image photographing method characterized in that the operation of the photographing apparatus is adjusted using image light for the one eye, and a photographing apparatus used for the photographing method.

  According to the present invention, the image light for the one eye (for example, the image light for the left eye) out of the incident light to the photographing apparatus is incident with a short optical path length without passing through the mirror. By using it for adjustment of operations such as focusing, distance measurement and brightness measurement can be performed directly and optimal focus adjustment, aperture adjustment, and shutter speed adjustment can be performed. Optical attachment (stereoscopic image capture) Means) Optimal shooting without blurring, underexposure, and overexposure is possible even when worn, and the image light for the one eye is also used when color shift occurs due to a thin film (oil film, etc.) adhering to the mirror. Can be directly observed and the white balance can be adjusted in this portion, so that color reproduction faithful to the real thing can be achieved.

  In the present invention, the image light for the one eye (for example, the image light for the left eye) out of the incident light to the photographing apparatus is incident with a short optical path length without passing through a mirror. Can be used to adjust the distance, brightness, etc. directly, so that the optimum focus adjustment, aperture adjustment, and shutter speed adjustment can be performed. Optical attachment (stereoscopic image capturing means) Optimal shooting without blurring, underexposure, and overexposure is possible even when the camera is mounted. Also, when color shift occurs due to a thin film (oil film, etc.) adhering to the mirror, the image light for one eye is directly applied. By observing and adjusting the white balance in this part, it is possible to reproduce the color faithful to the real thing.

It is the schematic which shows the adjustment method of the optical system and camera operation | movement of an optical attachment (stereoscopic image taking means) by embodiment of this invention. FIG. 4 is a schematic diagram (a), (b), and (c) of adjusting means such as a focus in the finder. It is the front view (a), bottom view (b), and rear view (c) of the adapter for mounting an optical attachment. FIG. 3 is an exploded perspective view when the optical attachment (stereoscopic image capturing means) is attached to the camera using the adapter. It is a perspective view of a mounting state similarly. It is a schematic longitudinal cross-sectional view of an optical attachment (stereoscopic image taking means) same as the above. FIG. 4 is a front view (a) when the adapter is attached to the camera and schematic views (b) and (c) showing the inner peripheral surface of the adapter inscribed in the lens barrel portion of the camera. FIG. 5 is a cross-sectional view taken along line VIII-VIII in FIG. 3 when the adapter is attached to the camera. The front view (a) when an adapter is attached to a camera, and a side view (b) including an optical attachment (stereoscopic image capturing means). It is the schematic of the image | video for right and left reproduced | regenerated as the same. In a conventional stereoscopic image shooting, an explanatory diagram when cropping left and right images (a), an explanatory diagram of a cropped left eye video (b), a cropped and magnified right eye It is explanatory drawing (c) of the image | video of. It is a schematic sectional drawing which shows the optical system of the optical attachment (stereoscopic image taking device) by a prior application apparatus. It is explanatory drawing showing the positional relationship of the to-be-photographed object at the time of imaging | photography. It is explanatory drawing showing the amount of parallax when reproducing | regenerating on a display similarly. It is explanatory drawing showing the amount of parallax at the time of reproducing | regenerating on a big display similarly.

  In the present invention, based on the adjustment, the same adjustment may be performed for the other eye image light (for example, the right eye image light). For example, the through side (the left eye image) Adjust the white balance on the mirror side by reflecting the result of white balance adjustment on the through side to the mirror side. May be.

  Further, in the viewfinder of the photographing apparatus, in addition to a boundary between an image corresponding to the image for one eye and an image corresponding to the image for the other eye, particularly in an image corresponding to the image for the one eye It is preferable to provide a photometric area.

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

  FIG. 1 schematically shows an imaging method according to the present embodiment. In the optical attachment (stereoscopic image capturing means) 31 as shown in FIG. 12, 2θ at the center point 10 of the entrance pupil is shown. The L image 11 is incident directly toward the center point 10 and is taken in as an L image for the left eye, and the R image 12 is reflected twice by the mirrors 13 and 14 by the camera that is photographed with a field angle. It enters toward the point 10 and is taken in as an R image for the right eye.

  Other configurations are the same as in FIG. 12, but the optical attachment 31 directly captures the image L for the left eye incident from the single daylighting window 44 into the right half of the photographing lens 2 without reflecting it to the mirror. Between the daylighting window 44 and the taking lens 2, mirrors 13 and 14 are arranged so that the image light for the left eye faces through L, and the image light R for the right eye incident from the daylighting window 44 is reflected and photographed. By setting the angles of the mirrors 13 and 14 to the angle taken into the left half of the lens 2, the amount of parallax can be reduced to 1/3 to 1/4 compared to the four-mirror system, By adjusting, it is possible to photograph with a deviation of ± 1.5 cm (on a 32-inch monitor) from a short distance to infinity, so that a three-dimensional image with less burden on the eyes can be obtained.

  In this case, the image light L for the left eye directly enters without forming a mirror (forms a through image), whereas the image light R for the right eye reflects the mirror twice and has an optical path length. Is large, the amount of light tends to decrease. For this reason, if the camera focus (brightness) and brightness are adjusted using the image light R for the right eye, there are many error factors, and the adjustment cannot be performed satisfactorily, which may cause a malfunction. .

  However, as described above, by making the incident light for camera adjustment the video light L for the left eye, this incident light is incident with a short optical path length without passing through a mirror. Measurement can be performed directly, and optimal focus adjustment, aperture adjustment, and shutter speed adjustment can be performed. Even when an optical attachment is attached, optimal shooting without blurring, underexposure, and overexposure is possible. In addition, even when a color shift occurs due to a thin film (oil film, etc.) attached on the mirror, the image light for the left eye can be observed directly and the white balance can be adjusted in this area, so that color reproduction faithful to the real thing can be achieved. It becomes possible.

  In this case, the non-through side (right-eye video) is slightly farther than the focus position on the through side (left-eye video) (distance data is about ac 30 mm), or the brightness of the non-through side image is 1 It is possible to increase the brightness to about 25 times (by matching the brightness of the image on the through side with that of the through side). Good.

  In order to perform such adjustment, for example, a measurement value such as the focus and exposure amount of the image light is input to a CPU (Central Processing Unit) 61 from the CCD 60 that receives the image light L for the left eye, and the CPU 61 For example, a control signal for adjusting the position of the taking lens 2 is input to the lens driving motor 62. Each of these components is incorporated in the camera casing.

  When the left-eye video light L is used for adjustment in this way, as shown in FIGS. 2A, 2B, and 2C, in order to adjust the focus and brightness, a through image of the viewfinder ( A photometric area such as a cross, a square area, or multiple points may be displayed at the center of the image for the left eye). However, this adjustment position needs to avoid the boundary between the left and right images, and particularly during zoom shooting, the influence of the image light on the mirror side becomes significant, so it is desirable to surely avoid the boundary. This is because the boundary corresponds to the end 14R of the mirror 14 shown in FIG. 1 and becomes a boundary between the left and right images, and the incident light for the left eye is disturbed. In addition, in the case of the multipoint system of FIG. 2C, incident light can be detected on average, so that it can be adjusted on the right side (mirror side) in addition to the adjustment on the left side so as to avoid the boundary. .

  3 to 6 show an adapter for mounting the optical attachment (stereoscopic image capturing means) 31 according to the present embodiment, and a video camera using this adapter (here, a digital still camera: hereinafter abbreviated as a digital camera). It is possible to shoot still images as well as moving images.) This shows a mounting mechanism of the three-dimensional image capturing means 31.

  As shown in FIGS. 3 to 5, the adapter 30 is formed of a substantially translucent or transparent plastic as a whole, and an optical attachment (stereoscopic image capturing means) 31 is attached to the adapter 30.

  At the time of attachment, as shown in FIG. 4, a notch 34 formed on the inner periphery of a circular ring portion 33 formed on the adapter 30 corresponding to the cylindrical shape of the circular ring portion 32 of the optical attachment 31 is provided. After the projection 35 formed on the outer periphery of the ring portion 32 of the optical attachment 31 is fitted, the optical attachment 31 is rotated about the optical axis 16 to be fixed in position, thereby optically fixing the adapter 30. The attachment 31 is fixed at a regular position as shown in FIG. Then, the optical attachment 31 can be removed from the adapter 30 by the reverse operation.

  The cross section of the optical attachment 31 is schematically shown in FIG. 6, but the internal structure and function are the same as those shown in FIG. In other words, the optical attachment 31 causes the digital camera 37 to display an image for one eye (here, for the left eye) on approximately half of the screen and an image for the other eye (here, for the right eye) on the screen. Each image light is incident so as to be positioned in the approximately other half of the image lens, but approximately one half of the photographing lens 2 without reflecting the image light for the one eye incident from the single daylighting window 44 by a mirror. The plurality of mirrors 13 and 14 are arranged oppositely to each other between the daylighting window 44 and the photographing lens 2 via the image light for the one eye, and are incident on the other eye that is incident from the daylighting window 44. The angles of the plurality of mirrors 13 and 14 are set to the angles at which the image light is taken into substantially the other half of the photographing lens 2 by reflection.

  As shown in FIGS. 3 and 4, the adapter 30 has a standing plate portion 36 provided with a circular ring portion (annular portion) 33, and the standing plate portion 36 has a digital camera 37 as shown in FIG. 3. It is applied to the front surface of the casing 49. Then, a fixed plate portion 38 that is fixed in contact with the bottom surface of the casing 49 of the digital camera 37 is connected to the upright plate portion 36 at a substantially right angle in the front-rear direction. It has a letter shape.

  The ring portion 33 of the adapter 30 has an inner peripheral surface 42 that is inscribed and fitted into an outer peripheral surface 41 of the ring portion 40 that allows the lens barrel 39 with a built-in lens of the digital camera 37 to enter and exit. . The inner peripheral surface 42 corresponds to the height position of the lens barrel portion 39 depending on the model of the digital camera 37, and as shown in FIG. 7, the ring portion 40 when the lens barrel portion is in the upper position. The first arc surface 42A of the center 43A that coincides with the outer peripheral surface of the ring portion 40 and the second arc surface 42B of the center 43B that coincides with the outer peripheral surface of the ring portion 40 when the lens barrel portion is in the lower position. , Any one of the circular arc surfaces is inscribed in the outer peripheral surface 41 of the ring portion 40 having a predetermined height.

  As a result, even if the height of the lens barrel portion 39, that is, the ring portion 40 is different depending on the model of the digital camera 37, the outer periphery of the ring portion 40 is changed to the inner periphery 42A of any one of the ring portions 33 of the adapter 30 accordingly. Alternatively, the center of the ring portion 33 of the adapter 30 can always be easily and accurately aligned with the center of the regular lens barrel simply by being joined to 42B.

  The fixing plate 38 provided at the bottom of the adapter 30 is formed with screw holes 47A and 47B. These screw holes 47A and 47B are originally for fixing a tripod of the digital camera 37. It is formed at different positions depending on the camera model. Then, without using a tripod, as shown in FIG. 8, for example, a screw 48 is screwed into the housing 49 of the digital camera 37 from one screw hole 47 </ b> A, thereby fixing the fixing plate portion 38 to the bottom surface of the camera housing 49. Screw it detachably. The fixing plate portion 38 is formed with a positioning small hole 55 that fits with a small protrusion (not shown) provided on the camera housing.

  In this case, if the screwing position is changed according to the camera model, the fixing plate portion 38 can always be fixed to the camera housing 49 according to the camera model. A positioning protrusion 50 is formed in an L shape in advance at the corner of the fixed plate 38 on the camera casing side. As shown in FIG. By engaging the protrusions 51 with the 49 projections, the positional relationship between the two is determined and the above-described screwing is performed. As a result, the fixing plate portion 38 can always be fixed at a proper position with respect to the camera housing 49.

  Further, in the fixed plate portion 38, a protruding plate portion 52 that protrudes downward at a substantially right angle is integrally provided below the ring portion 33. The protruding plate portion 52 becomes a leg portion when the adapter 30 is attached to the camera housing 49 as shown in FIG. 9A and placed on the placement surface 53 as shown in FIG. 9B. In addition, the lower end surface 54 in contact with the mounting surface 53 is parallel to the fixed plate portion 38.

  Accordingly, since the lower end of the protruding plate portion 52 and the lower end of the fixed plate portion 38 are supported in contact with each other on the mounting surface 53, the optical attachment 31 with a built-in mirror contacts the mounting surface 53 so that the mirrors 13 and 14 are in contact with each other. Since these are not subjected to impact force or the like, these mirrors can always be held in a normal state.

  In addition, a window 46 facing the viewfinder 45 of the digital camera 37 is provided on the top of the standing plate 36 of the adapter 30. For example, a half 46A of the window 46 corresponding to the right eye image light is shielded from light. Processing or processing for reducing the amount of transmitted light, such as embossing or blackening processing, is performed, and the other half portion 46B has sufficient translucency without being subjected to such processing.

  That is, when the target image is viewed from the finder 45 with the optical attachment 31 attached to the digital camera 37, for example, image light for the left eye enters through the light transmitting portion 46B of the window portion 46 of the adapter 30. The video light for the right eye does not enter from the half portion 46A subjected to the light shielding process or the transmitted light amount reduction process, or enters only with a low light quantity. FIG. 10 schematically shows the state with an image.

  Therefore, when the adapter 30 is attached to the camera and used, it is possible to shoot with the left eye image in focus (focus) at the time of shooting, so that a good image can always be reproduced on the display screen, and the shooting state can be changed. Can be confirmed. Of course, if the adapter 30 is removed from the camera, it can be used as a normal digital camera that does not reproduce a stereoscopic image.

  Further, since the adapter 30 is made of a translucent material, the inner state of the adapter 30 can be confirmed from the outside, and it is easy to handle and attach to the camera, and to check the attachment state. .

  The embodiment described above can be variously modified based on the technical idea of the present invention.

  For example, the components and arrangement of the mechanism for adjusting the operation of the above-described camera may be variously changed, and if the input light for adjustment is changed to form a through image, the image for the right eye Light may be used.

  In addition, the shape, size, material, and the like of the adapter 30 may be changed in various ways. In particular, the position defining means and the fixing means when attached to the camera are not limited to those described above. Moreover, the adapter 30 and the optical attachment 31 may be integrated, for example, may be integrally formed. In this case, the optical attachment 31 can be arranged at a normal position as designed at the time of molding, which is advantageous. The screw holes 47A and 47B may not be formed individually, but may be formed into a long hole shape, and a desired position may be screwed in the long hole.

  The attachment target of the adapter 30 and the optical attachment 31 is not limited to the above-described digital camera, and may be another video camera as long as it has a CCD, magnetic disk, or magnetic tape recording function.

  The above-mentioned video for each eye is not only reproduced on a display separate from the camera, but also reproduced on a monitor screen attached to the camera, and this monitor is provided with a finder function as shown in FIG. You may enable it to monitor the image | video for left eyes.

  Furthermore, the present invention is effective not only for still images but also for moving image shooting. Further, the present invention is not limited to the above-described stereoscopic image observation by the shutter glasses method, and can be applied to general known stereoscopic image observation using parallax or the like by polarized light or the like.

2 ... Lens, 10 ... Center point, 11 ... L image, 12 ... R image, 13, 14 ... Mirror,
15 ... intersection point, 16 ... optical axis of lens, 17 ... light beam, 20L, 20R ... camera,
21, 23 ... Display, 22 ... Shutter glasses, 30 ... Adapter,
31 ... Optical attachment (stereoscopic image capturing means), 37 ... Digital camera,
39 ... Lens barrel, 60 ... CCD, 61 ... CPU, 62 ... Motor

JP 11-46373 A

Claims (6)

Using the stereoscopic image capturing means, the stereoscopic image is captured by the imaging device so that the video for one eye is positioned in approximately one half of the screen and the video for the other eye is positioned in approximately the other half of the screen. A method,
Without reflecting the image light for the one eye incident from a single daylighting window with a mirror, it is directly taken into one half of the photographing lens corresponding to the image for the one eye,
Between the daylighting window and the photographing lens, a plurality of mirrors are arranged opposite to each other via the image light for the one eye,
The stereoscopic image capturing means is configured so that the angles of the plurality of mirrors are respectively set to angles at which the image light for the other eye incident from the lighting window is captured by the other half of the photographing lens by reflection. In the three-dimensional image shooting method,
The image light for one eye that is directly incident on substantially one half of the photographing lens with a short optical path length without reflection as compared with the image light for the other eye is incident on an image sensor, and the one eye Measure the focus (focus) or exposure amount of the image light for the eye, and input this measurement value to the CPU (Central Processing Unit).
The image light for the one eye is used to adjust the focus (focal point), aperture, shutter speed or white balance of the photographing apparatus, and when adjusting the focus, a control signal is sent from the CPU to the position of the photographing lens. A stereoscopic image photographing method comprising: inputting to an adjusting means, and adjusting the position of the photographing lens by the photographing lens position adjusting means.   The stereoscopic image photographing method according to claim 1, wherein a photometric area is provided in a viewfinder of the photographing apparatus other than a boundary between an image corresponding to the one eye image and an image corresponding to the other eye image. .   The stereoscopic image capturing method according to claim 2, wherein the photometric area is provided in an image corresponding to the image for the one eye. An imaging device that uses a stereoscopic image capturing means to capture a stereoscopic image so that the video for one eye is located in approximately one half of the screen and the video for the other eye is positioned in approximately the other half of the screen. There,
The stereoscopic image capturing means includes
Without reflecting the image light for the one eye incident from a single daylighting window with a mirror, it is directly taken into one half of the photographing lens corresponding to the image for the one eye,
Between the daylighting window and the photographing lens, a plurality of mirrors are arranged opposite to each other via the image light for the one eye,
A stereoscopic image photographing apparatus configured to set the angles of the plurality of mirrors to angles at which the image light for the other eye incident from the daylighting window is taken into the substantially other half of the photographing lens by reflection. In the adjustment means for adjusting the operation of the photographing apparatus,
The image light for one eye that is directly incident on substantially one half of the photographing lens with a short optical path length without reflection as compared with the image light for the other eye is incident on an image sensor, and the one eye Measure the focus (focus) or exposure amount of image light for eyes, and input this measurement value to the CPU (Central Processing Unit).
The image light for the one eye is used to adjust the focus (focal point), aperture, shutter speed, or white balance of the photographing apparatus, and when adjusting the focus, a control signal is sent from the CPU to the position of the photographing lens. A three-dimensional image photographing apparatus characterized in that the photographing lens position adjusting means inputs the adjusting lens and adjusts the position of the photographing lens.   5. The three-dimensional image according to claim 4, wherein in the finder of the photographing apparatus, a photometric area is provided in addition to a boundary between an image corresponding to the image for one eye and an image corresponding to the image for the other eye. Image taking device.   The stereoscopic image capturing apparatus according to claim 5, wherein the photometric area is provided in an image corresponding to the image for the one eye.

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