JPH1169273A - Image-pickup device and computer-readable record medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent failures caused by photographing during adjustment by discriminating whether or not the optical condition of a lens system is being adjusted and prohibiting photographing by a photographic means in the case of adjusting. SOLUTION: At the time of housing plural film pictures in a video camera by using a film adapter, as video changes whenever a film holder is slid and the frame of a film is sent, An AF operation and diaphragm adjusting operation are required for each time of the change and a finite time period is taken for its completion. AF operation is completed, when a focus compe lens 106 is stopped at a position maximizing the derivation of of an AF information processing part (high-pass filter) 117, and diaphragm adjusting operation is completed when the output voltage of a diaphragm control part (peak hold) 116 and reference voltage are equalized. The completion of these two operation is discriminated to prohibit photographing if it has not been completed yet and to execute processing related with photographic permission to set the video camera in a state capable of photographing a still picture, if it is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image pickup apparatus represented by a video camera and a computer-readable recording medium used in this apparatus, and more particularly to an automatic setting function of an image pickup mode.

[0002]

2. Description of the Related Art With the rapid technical improvement of personal computers and their peripheral devices, for example, scenes taken by an operator can be easily taken into a memory in the personal computer and edited to create original postcards and posters. Like
Market demands for this technology field are increasing year by year. Means for capturing the scene shot by the operator as an electric signal include a method of directing a video camera at a target object and a method of re-photographing a photograph taken with a silver halide camera or a negative film, a body film with a video camera. Although a method can be mentioned, in each case, a video camera is interposed as a photoelectric conversion function.

FIG. 11 shows a state in which a film adapter 903 is attached to a video-integrated camera 904, and a film 901 held by a film holder 902 which can slide and move the film frame by frame is photographed. The film adapter 903 is provided with a backlight (not shown), which illuminates the film 901 from behind. The transmitted image is captured by the video integrated camera 904. At this time, if the camera 904 has a function of converting a negative image into a positive image (negative-positive conversion), the film 901
Is a negative film, a video signal of a positive image can be obtained as an output electric signal. If this output electric signal is input to the personal computer 905, it becomes possible to take in the positive image into the memory in the personal computer. Since the size of each frame of the negative film is uniform and the light source can be unified with the above-mentioned backlight, the method of FIG. 11 is much easier than taking a picture printed on photographic paper. Can be loaded into the personal computer 905.

[0004] By the way, video information of a negative film is literally inverted with respect to a positive video. FIG. 12 is an example of a color difference vector display in a negative state of a color negative film. As is clear from FIG. 12, the color difference vector is inverted by 180 ° between the two states.

FIG. 13 shows a video-integrated camera 90 shown in FIG.
FIG. 21 is a schematic block diagram of the configuration of FIG. 4, and a portion related to a negative / positive inversion function is shown in detail in FIG. In FIG. 13, reference numeral 101 denotes a subject, which is usually a subject to be photographed, such as a person or a landscape. However, when the usage shown in FIG. 11 is to be performed, a negative film or a slide film is a subject to be photographed. The distance is also very close. 102 is a fixed first group lens, 103 is a variable power lens, 104 is an aperture,
Numeral 105 denotes a fixed third lens unit, and numeral 106 denotes a focus compensating lens having both functions of adjusting the focus and correcting the movement of the focal plane due to zooming. Reference numeral 107 denotes an image sensor such as a CCD, 108 denotes an AGC circuit, and 109 denotes a camera signal processing unit, the details of which are shown in FIGS. 20 and 21 described later.

Reference numerals 110, 111 and 112 denote variable power lens motors for driving a variable power lens, a diaphragm and a focus compensating lens, an IG meter, and a focus compensating lens motor, respectively. A driver for supplying driving energy to 112, an aperture control unit 116, and an AF 117 for processing image information used for autofocus (AF) control
Information processing section, 118 is a lens / camera control section, 119 is a system controller (system controller) for controlling the entire system of the video integrated camera, 120 is a switch array provided in the video integrated camera, 121, 122, 12
3, 128 are communication lines between the respective blocks.

[0007] The video signal processed by the camera signal processing section 109 passes through an amplifier circuit 124 and is displayed by a display control section 125.
Is input to In the display control unit 125, the system controller 119
The character information generated by the character generator 127 based on the information from
The image is projected on the CD 126. The video signal processed by the camera signal processing unit 109 is also supplied to a video recording device (not shown).

FIG. 14 shows each lens and aperture 10 of FIG.
2 shows a lens system composed of 2, 103, 104, 105 and 106. This lens system is called an inner focus type lens system. FIG. 15 shows the position of the variable magnification lens of the inner focus type lens system shown in FIG.
An example of the focusing position of the imaging surface of the focus compensating lens with respect to the subject distance corresponding to each focal length is shown with the position of the vertical axis as the vertical axis. In a lens system as shown in FIG.
When the focus compensating lens is moved on the imaging surface of the image sensor 107 to focus the image, the focus compensating lens position with respect to the subject distance changes according to each focal length. In particular, on the short focal length side, it is known that by moving the focus compensating lens to the vicinity of the closest end, the minimum focusable subject distance becomes short immediately before the first group lens 102.

A curve 601 shown in FIG. 15 is a focusing curve for an extremely short subject distance several cm immediately before the lens 102. The focusable area of the variable power lens 103 with respect to this subject distance is indicated by 602 from the wide end. It can be seen that this is a limited area on the shorter focal length side. Therefore,
When photographing a film at a very short distance from the lens 102 using the film adapter 903 as shown in FIG. 11, in order to obtain a focused image on the imaging surface, a combination of the positions of the variable power lens and the focus competition lens is required. 15 must be within a hatched portion 604 surrounded by three regions 601, 602 and 603.

Therefore, as shown in FIG.
In the case of photographing an image of an object 1, a magnification adjustment switch 1 arranged in a switch array 120 as shown in FIG.
By setting the position of the variable power lens in the area 602 and operating the autofocus circuit by 404, the focus compensating lens is moved to the area 6 in FIG.
04 must be moved.

FIG. 17 is a diagram showing a state of an output signal of the AF information processing section 117 used for the AF control of FIG. The AF information processing section 117 is constituted by, for example, an HPF (high-pass filter) such as a differentiating circuit. In FIG. 17, the horizontal axis is the focus competition lens position, and the vertical axis is the AF information processing unit 11.
7, the sharpness of the subject image is maximized at the focal point, so that its high-frequency component is also maximized, and the output value of the differential circuit is also maximized. That is, in principle, the AF can be executed by always adjusting the focus compensating lens position so that the output level of the differentiating circuit in the AF information processing unit 117 is maximized.

FIG. 18 shows an example of processing in the lens / camera control unit 118 for executing the above-described AF principle. When the execution of the process is started in step S2301, S23
At 02, the focus compensating lens is moved in an arbitrary direction. In S2303, the differential value is detected. If the differential value is smaller than the previous value, the lens driving direction is the direction away from the in-focus position, so the lens driving direction is reversed in S2305.

If the differential value has increased from the previous time in step S2303, the lens has moved toward the in-focus position.
At 304, the driving in the current driving direction is continued. S2306
It is checked whether or not the differential value has reached the maximum. If not, the flow returns to S2304 to continue the lens driving. When the differential value reaches the maximum, the driving of the focus compensation lens is stopped in S2307, and the lens stop state is continued until a change in the differential value is detected in S2308. If a change in the differential value is detected in S2308, it can be determined that the subject distance has changed and blur has occurred, so the process returns to S2302, and the focusing operation is performed again.

Next, FIG. 19 shows an example of a circuit configuration in the aperture control unit 116. In FIG. 19, FIG.
The peak value of the video signal output from the third camera signal processing unit 109 is peak-held by the peak hold unit 2401. The peak hold value is used as the reference voltage generation unit 24.
13 is detected by the differential circuit unit 2402 as to whether or not it is equal to the reference voltage output from the IG.
Output to the driver 114. The IG driver 114 drives the aperture in a direction to reduce the error voltage.

Whether or not the output value of the peak hold unit 2401 and the reference voltage have become equal is detected by the aperture adjustment state detection unit 2402. If the output value is not equal, it is determined that the aperture adjustment has been completed and the output connected to the communication line 128 in FIG. Port 2
The lens / camera control unit 1 sends the aperture adjustment completion information from 406
18 is output. If the output value of the peak hold unit 2401 is not equal to the reference voltage, a signal indicating that the aperture adjustment is being performed is output from the aperture adjustment state detection unit 2404 to the lens / camera control unit 118. Further, an input port 2405 connected to the communication line 128 receives a peak hold clear signal at an appropriate time by the lens / camera control unit 11.
8 is input.

FIG. 20 is a block diagram showing the configuration inside the camera signal processing unit 109, and a portion surrounded by a broken line corresponds to the configuration. It should be noted that the configuration shown in this figure does not have a negative / positive inversion function. 20, 807 denotes a camera control unit, and 801 denotes 102, 103, 104, and 104 shown in FIG.
105, 109, and a portion composed of these lenses and drive-related blocks (110 to 115, etc.) for the aperture, which are shown in a simplified manner. Reference numeral 802 denotes a YC signal generation unit which outputs luminance signals YH and Y from the output of the AGC circuit 108.
L and the color signals R and B are separated and output. 80
Reference numerals 3 and 804 denote R and B gain control units, respectively. The camera control unit 807 detects the levels of the color difference signals RY and BY and controls the gain control units 803 and 803 so that an appropriate white balance is obtained. The gain of 804 is adjusted, and the adjusted color signals R 'and B' are output.

Reference numeral 805 denotes a color difference signal R- based on YL, R, B.
A color difference signal generation unit that generates Y and BY, and 806 is YH,
An encoder for generating a television signal from RY and BY; 808, a synchronization signal generation unit that supplies a synchronization signal to a camera control unit 807; 809, a gain control unit 803;
Reference signal [RY] re for adjusting the gain of 804
f, a reference signal generator for generating [BY] ref.

An image memory 811 connected to the camera control unit 807 via a communication line 810 is for taking in a still image, and more specifically, a moving image shooting mode on a switch array 120 as shown in FIG. When the still image shooting mode is set by the / still image shooting mode changeover switch 1401, the YC signal generation unit 802 and the color difference signal generation unit 805 at the time when the trigger switch 1402 on the switch array 120 is pressed and turned on similarly. And outputs still image information to the encoder 806 in accordance with a control signal from the camera control unit 807.
When the trigger switch 1402 is not pressed in the moving image shooting mode or the still image shooting mode, the image information from the YC signal generation unit 802 and the color difference signal generation unit 805 is passed as it is.

When the video-integrated camera has both a moving image photographing function and a still image photographing function, it is conceivable that two trigger switches are provided independently for moving images and still images. From the viewpoint of miniaturization, cost reduction, and easy operability, one trigger switch 1402 as shown in FIG.
It is generally designed to be used for both moving image shooting and still image shooting.

FIG. 21 shows a configuration in which a negative / positive reversal function is added to FIG. 21 is different from FIG. 20 in that the negative / positive reversing unit 10 is provided in front of the image memory 811.
01 is inserted.

The negative / positive reversing unit 1001 is provided with YH, RY,
Invert BY. FIG. 22 shows the configuration.
In FIG. 22, with respect to YH, the bright portion of the input luminance signal is inverted to a dark portion, and the dark portion is inverted to a bright portion. That is, for example, as in the calculation unit 1201, the absolute value of the luminance signal within the range of the 100% white luminance level from the input black level black level is subtracted from the 100% white luminance level to obtain the 100% white reference level. Is extracted. The arithmetic unit 1203 inverts the RY signal in the reverse direction on the RY axis.
The BY signal is inverted in the reverse direction on the BY axis.
As described above, a negative image can be converted to a positive image by inverting the luminance signal and the color difference signal, respectively.

The switches 1202, 1204, and 1206 operate in conjunction with each other by a negative / positive inversion ON / OFF signal 1002, and output the inverted signal when the switch is ON and the input signal as it is when the switch is OFF.

The negative / positive inversion ON / OFF signal is output from the camera control unit 807 shown in FIG. Whether or not to execute the negative / positive reversal is determined by the operator in the switch row 12 shown in FIG.
Selection is made using the switch 1403 within 0. This information is transmitted through the communication line 123, the system controller 119, the communication line 122, and the lens / camera control unit 118, and then the negative / positive inversion O in FIG.
Communication line 1 as shown as N / OFF signal 1003
21 is transmitted to the camera control unit 807, and based on this information, the camera control unit 807 sets the negative / positive inversion ON / OF.
An F signal 1002 is output.

As described above, the switch 1401 shown in FIG.
Is moved to the position of the still image and when the negative / positive inversion is selected by the switch 1403, the LCD 1 in the finder shown in FIG.
26, the amplifier 124 shown in FIG.
Along with the subject image 1502 by the output signal of
Character generator 127 based on the information from
A character display 1503 indicating a mode for photographing a still image with one operation of the trigger switch 1402 generated in step S1 is displayed. When a moving image is selected by the switch 1401, the contents of the moving image 1505 are displayed as characters at the position of the display 1503.

[0025]

However, in the above-mentioned conventional example, the image pickup apparatus has two operation modes, ie, moving image shooting and still image shooting.
It has a mode, and the operator switches the mode according to the shooting purpose at each time, but the imaging system circuit from the lens to the camera signal processing unit is one type, and the basic part is Does not switch the operation between moving image shooting and still image shooting. That is, FIG. 17 and FIG.
The AF operation described with reference to FIG. 19 and the aperture adjustment operation described with reference to FIG. 19 are basically one.

Although the state of the lens and the aperture varies depending on the scene to be photographed, a finite non-negligible time is required from the start to the end of the adjustment. In the case of moving image shooting, even when the subject distance and the amount of incident light change significantly and the focus and the brightness of the screen gradually change, the unnaturalness is not noticeable due to the long shooting time. On the contrary, it is not considered that the operation is preferable to making a critical change.

However, in the case of photographing a still image, the focus and the amount of light at the moment when the image is taken must be appropriate, and when the state of the screen is gradually changing during adjustment, the photographing is performed by pressing the trigger switch. There is a problem that fails. Further, not only a video camera capable of capturing both a moving image and a still image, but also an electronic still camera dedicated to capturing a still image, a similar problem arises because finite time is required to adjust the focus and aperture.

Further, even in the case of film photography set as shown in FIG. 11, since the brightness of each frame is different and the distance from the lens is different for each frame due to the deflection of the film 901, the film holder 902 It is essential to adjust the focus and aperture every time the frame of the film is changed by sliding, and if these are fixed, appropriate optical conditions cannot be obtained.

Accordingly, the present invention provides a trigger acceptance inhibiting function during range system adjustment so that when a still image is captured by a video camera, a trigger switch can be pressed after adjustment of a lens system capable of adjusting optical conditions is completed. It is an object of the present invention to provide a computer-readable recording medium provided with an imaging device.

[0030]

According to an image pickup apparatus of the present invention, an image pickup means for picking up a subject image and outputting an image signal; a lens system for forming the subject image on an image pickup surface of the image pickup means; An adjusting means for adjusting the optical conditions of the lens system and a prohibiting means for judging whether or not the optical conditions of the lens system are being adjusted and for inhibiting the photographing by the imaging means during the adjustment are provided.

In a computer-readable recording medium according to the present invention, a process of capturing an image of a subject by an image capturing means and outputting an image signal, and an optical system of a lens system for forming the image of the subject on an image capturing surface of the image capturing means. A process for adjusting a condition, a process for determining whether or not the optical condition is being adjusted, and a process for prohibiting imaging by the imaging unit when it is determined that the optical condition is being adjusted. Recording the program.

[0032]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, first to fourth embodiments of the present invention will be described with reference to the drawings. (First Embodiment) An overall schematic block diagram of an imaging apparatus according to a first embodiment of the present invention is equivalent to the block diagram of the conventional technology shown in FIG. 13 inside the camera signal processing unit 109.

Therefore, for the purpose of a brief description, of the configuration inside the camera signal processing unit 109 in the present embodiment,
FIG. 1 shows only a camera controller different from FIG. 21 and its peripheral portion. Therefore, the connection destinations of the respective blocks in FIG. 1 are the same as those in FIG. 21 and the like, which is also indicated in the drawing. In the present embodiment, an automatic discrimination means for mounting a negative film, which will be described later and disclosed in the specification of Japanese Patent Application No. 8-322714 filed by the same applicant as the present invention, is used.

In the memory 210 as a recording medium according to the present invention, a program for processing shown in FIGS. 3 and 8 to 10 which will be described later and executed by a computer of the camera control unit 205 is recorded. As this recording medium, RO
Semiconductor memories such as M and RAM, optical disks, magneto-optical disks, and magnetic media can be used.

In FIG. 1, reference numeral 205 denotes a camera control unit.
20 and 21 using a microcomputer.
There is also a function added to the function of the conventional camera control unit 807. Since the camera control unit 205 is a microcomputer, the color difference signal generation unit 805 in FIG.
Are converted into digital signals by A / D converters 201 and 202 and input to the camera control unit 205. A / D converter 20
Outputs 1 and 202 are input to the camera control unit 205 from terminals 206 and 207, respectively, and are used to control the gain control units 803 and 804 for the R and B signals described with reference to FIGS. Further, A / D converters 201 and 20
2 are also input to integrators 203 and 204, respectively, and the respective integrated results are input to the camera control unit 205 from terminals 208 and 209.

When the transmitted light of the color negative film illuminated by a predetermined backlight is photographed by a video camera, and the color difference signals are integrated by the integrators 203 and 204, the relationship between the RY component and the BY component is as follows. , Are substantially distributed in the range indicated by 301 in FIG.
Therefore, in order to detect that a negative film is being photographed, each color difference component signal input from the terminals 208 and 209 is observed by the camera control unit 205, and the RY component is within the determination range 302 of FIG. And that the BY component is within the determination range 303.

FIG. 3 is a flowchart for detecting negative film photography in the camera control unit 205 and automatically shifting to a still image photography mode. When the execution of the process is started in step S401, it is first determined in step S402 whether a signal input from the terminal 209 is within the determination range 302. If the signal is outside the determination range, the mounting is set to the moving image mode in step S406. The image memory 811 is set to the through state, and in step S407, the negative / positive inversion ON /
The OFF signal 1002 is turned off. If it is within the determination range in S402, it is determined in S403 whether or not the signal input from the terminal 208 is within the determination range 303. If it is out of the determination range, the process similarly proceeds to S406. If it is within the determination range in step S403, the apparatus is set to the still image mode in step S404, and when a later-described condition is satisfied and the trigger button is turned on, the apparatus stands by to capture one still image in the image memory 811 and , Negative / positive inversion ON / O so as to execute negative / positive inversion in S405
The FF signal 1002 is turned on.

When a plurality of film images are stored in a video camera using the film adapter 903 set as shown in FIG. 11, the image changes every time the film holder 902 slides and the frame of the film 901 is sent. As described above, the AF operation and the aperture adjustment operation are required each time. A finite time is required to complete the AF operation and the aperture adjustment operation. Completion of AF operation means
That is, the focus compensating lens stops at the position where the differential value becomes maximum in FIG. 17, and the completion of the aperture adjustment operation means that the output level of the peak hold unit 116 in FIG. 19 and the reference voltage become equal. .

Therefore, it is determined whether or not the focusing is completed in S408 based on these conditions. If the focusing is not completed, the photographing prohibition related processing S409 is executed, and then the processing is shifted to S4.
08 and the execution of the above-described shooting prohibition related processing is continued until the AF operation is completed. If it is determined in S408 that the AF operation has been completed, it is determined in S411 whether the aperture adjustment operation has been completed. If the aperture adjustment operation is not completed, S4
When the process is completed, the photographing permission-related process S410 is executed, and the video camera is set in a state where still images can be photographed.

Here, specific examples of the photographing prohibition related processing S409 and the photographing permission related processing S410 will be described.
This will be described with reference to FIGS.

FIG. 4 shows an example of specific processing of the photographing prohibition related processing S409. In step S4091, the photographer operates the trigger switch 140 shown in FIG.
Even if 2 is pressed, the reception is prohibited, and furthermore, S4092
The LCD 126 in the viewfinder attached to the image pickup apparatus shown in FIG.
A display as shown in FIG. The characters in the display 1506 are the same as those in FIG.
Information is output to the character generator 127 based on the optical adjustment incomplete information obtained from the communication line 122 via the communication line 122, and based on this information, the character generator 127 is output.
The display control unit 125 generates the AGC
The video signal from the unit 124 is superimposed.

FIG. 6 shows an example of a specific process of the photographing permission-related process S410. In step S4101, the photographer in FIG. 16 is allowed to take a picture in which the optical condition adjustment of the lens system is completed. Trigger switch 14
In order to permit the reception of a trigger to capture the image when the user presses 02, and to inform the photographer in step S4102 that a still image can be captured, the LCD 126 in the viewfinder is displayed in the same manner as in FIG. 7 of 1507
Is displayed.

With the above configuration and operation, the negative film positive conversion image in which the optical conditions of the lens system have been completely adjusted can be taken into the video camera.
Therefore, for example, even when the film 901 is attached to the film adapter 903 in FIG. 11 and video of a plurality of frames is continuously captured, troublesome image confirmation is not required, and the trigger switch is pressed when the video camera shooting is permitted. It is possible to capture a plurality of still images smoothly only by using this function.

Further, according to the configuration of FIG. 21 described above, the color difference signal after the negative / positive inversion is taken into the camera control unit 807, so that the negative color difference vector detection → the conversion of the negative to the positive → the positive color difference vector detection → the positive There is a possibility of performing a negative-positive reversal repetition operation such as conversion to negative → detection of negative color difference vector →... Therefore, as shown in Table 1,
Only when a negative image is detected by the camera control unit 205, an operation of inverting the negative and the positive is performed. If a positive image is detected, a determination unit that maintains the current state may be provided to prevent this malfunction. Can be avoided.

[0045]

[Table 1]

(Second Embodiment) FIG. 8 shows a second embodiment of the present invention.
3 is a flowchart of processing in a camera control unit 205 in a camera signal processing unit according to the embodiment of FIG.
The same processes as those of the embodiment are denoted by the same step numbers. FIG. 8 shows the determination conditions of FIG.
The lens position in the image-focusing state when an object at an extremely short distance described in 5 is photographed is added as a determination condition. This embodiment also uses the above-described automatic determination means for mounting a negative film.

In FIG. 8, when the execution of the process is started in step S701, it is first determined in step S408 whether or not focusing has been completed. If not completed, a photographing prohibition related process S409 is executed, and the process proceeds to step S408. Return to A
The execution of the above-described shooting prohibition-related processing is continued until the F operation is completed. If it is determined in S408 that the AF operation has been completed, it is determined in S411 whether the aperture adjustment operation has been completed. If the aperture adjustment operation is not completed, the process proceeds to S409, and if completed, the operation determined in S409 and S410 regarding permission / non-permission of photographing in S704 is continued. This S704
This is because even if the adjustment of the optical conditions of the lens system is completed by the processing up to this point, the determination as to whether or not to set the still image shooting mode is continued thereafter, and the shooting is performed after all the conditions are satisfied. Should be allowed.

Next, in S702, it is determined whether or not the variable power lens is within the range of the wide area 602 in FIG. 15, and if it is out of the range, the process proceeds to S40 as in the first embodiment.
6. The process proceeds to step S407, where the apparatus is set to a state in which the image is captured in the moving image mode without the negative / positive inversion. If the zoom lens position is within the range of 602 in S702, it is determined in S703 whether the focus competition lens position is within the range 604 closer to the curve 601 in FIG. 15 (the position condition of the focus competition lens is (Varies depending on the position of the variable power lens), and if it is out of the range, S406 and S
407 is executed.

If the focus compensating lens position is within the range of 604 in S703, the state of the RY and BY color difference signals is detected in S402 and S403 as in the first embodiment, and the color difference vector is detected. When is within the range of 301 in FIG. 2, the state of the apparatus is set so as to capture a negative-positive inverted image in the still image shooting mode in S404 and S405,
The video camera is set to a state where a still image can be shot by executing the shooting permission related process S410.

As described above, by adding the state of the lens system as a determination condition, it is possible to clearly determine that a negative film is being photographed at a short distance, that is, using a film adapter, so that a malfunction does not occur. It is possible to automatically execute a standby operation until the adjustment of the optical conditions is completed, switching to the still image photographing mode, turning on the negative / positive inversion function, and notifying the operator of photographable information to the operator.

(Third Embodiment) FIG. 9 shows a third embodiment of the present invention.
10 is a flowchart of processing in the camera control unit in the camera signal processing unit according to the embodiment, and the same processes as those in FIGS. 3 and 8 are denoted by the same step numbers. FIG. 21 shows a schematic configuration of the camera signal processing unit.
In the present embodiment, an automatic discriminating means for mounting a negative film as in the first and second embodiments is not taken.
As described in the related art, the operator simply operates the negative / positive inversion function changeover switch 1 in the switch row 120 of FIG.
By operating 403, when the negative / positive inversion function is ON,
The processing is configured so that the apparatus is automatically shifted to the still image shooting mode, and the image capturing is permitted when the adjustment of the optical conditions is completed.

In FIG. 9, when the process is started in S1301, it is checked in S1302 whether the operator has turned on the negative / positive inversion function. As described above, the ON information of the negative / positive inversion function is transmitted through the communication line 12 in FIG.
2,123. If the negative / positive inversion function is recognized to be ON in S1302, the apparatus is set to the still image shooting mode in S404, and then the negative / positive inversion ON / OFF signal 1002 is turned ON in S405 to turn on the negative / positive inversion function. In step S408, it is determined whether or not the focusing has been completed. If the focusing has not been completed, the photographing prohibition-related process S409 is executed, the process returns to step S408, and the execution of the photographing prohibition-related process is continued until the AF operation is completed. . If it is determined in S408 that the AF operation has been completed, it is determined in S411 whether the aperture adjustment operation has been completed. If the aperture adjustment operation is not completed, the process proceeds to step S409. If the operation is completed, the image capturing permission-related process S410 is executed, and the video camera is set to a state where a still image can be captured.

In step S1302, the negative / positive inversion function is turned on.
F, the device is set to the moving image mode in S406 and S407, and then the negative / positive inversion is turned off.
The negative / positive inversion ON / OFF signal 1002 is turned off.

With the above arrangement, the negative / positive reversal function is turned on even in a device which does not automatically determine the negative film photography.
In the state, the apparatus is automatically shifted to the still image shooting mode, and the image after the adjustment of the optical conditions is completed can be stored in the video camera.

(Fourth Embodiment) Until now, FIG.
Although the operation in image capturing using a film adapter has been described as shown in, the present embodiment is not only applied when using a film adapter, but can also be applied during normal shooting It is. Next, the operation during normal shooting according to the present embodiment will be described with reference to FIG. The schematic configuration of the camera signal processing unit is shown in FIG.
This is shown in FIG.

In FIG. 10, during normal shooting, when the processing is started in S1601, it is detected whether or not the switch 1401 in the switch array in FIG. 16 has been switched to the still image side. If it is on the moving image side, the apparatus is switched to the moving image mode in S406. If the S switch 1401 is on the still image side, the apparatus is switched to the still image mode in S404, and it is determined whether or not focusing has been completed in S408.
9, the process returns to S408, and the execution of the above-described shooting prohibition-related process is continued until the AF operation is completed. Also S
If it is determined in 408 that the AF operation has been completed, it is determined in S411 whether the aperture adjustment operation has been completed. If the aperture adjustment operation is not completed, the process proceeds to step S409. If the aperture adjustment operation is completed, the image capturing permission-related process S410 is executed, and the video camera is set in a state where a still image can be captured.

This embodiment is effective in the case of normal photographing without using a film adapter, because the light amount and the subject distance are not substantially constant as in the case of the film adapter, and must be adapted to various photographing conditions.

In the first to fourth embodiments, the output voltage of the peak hold unit 2401 and the reference voltage generation unit 24 shown in FIG.
Although the method of detecting by making the output voltage of the diaphragm equal to that of the diaphragm is used, for example, an encoder for detecting the mechanical closing state of the diaphragm is provided in the diaphragm, and when the encoder output stops changing, that is, the diaphragm is driven. The point at which the aperture stop may be regarded as the completion of the aperture adjustment.

[0059]

As described above, according to the present invention,
During the execution of the optical condition adjustment of the lens system, a photographing mistake can be avoided by providing a photographing prohibition unit for prohibiting photographing. Further, by providing a notifying means for notifying the operator that the optical condition of the lens system is being adjusted, it is possible to warn the operator in advance of a shooting error.

When the optical conditions of the lens system become appropriate, an image can always be taken in good optical conditions by providing a permission means for permitting photographing. By providing a notifying means for notifying the operator that shooting is possible when the optical conditions of the lens system become appropriate, it is possible to notify the photographer of the image shooting timing under favorable optical conditions.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a characteristic diagram for explaining a principle of distinguishing a negative film from a positive film.

FIG. 3 is a flowchart showing a first embodiment of the present invention.

FIG. 4 is a flowchart showing a shooting prohibition related process.

FIG. 5 is a configuration diagram illustrating a display example of shooting prohibition;

FIG. 6 is a flowchart illustrating shooting permission-related processing.

FIG. 7 is a configuration diagram showing a display example of shooting permission.

FIG. 8 is a flowchart showing a second embodiment of the present invention.

FIG. 9 is a flowchart showing a third embodiment of the present invention.

FIG. 10 is a flowchart illustrating a fourth embodiment of the present invention.

FIG. 11 is a configuration diagram showing a system for performing film shooting.

FIG. 12 is a characteristic diagram illustrating vector components of a color difference signal before and after negative / positive inversion.

FIG. 13 is a configuration diagram illustrating an example of a conventional imaging apparatus to which the present invention can be applied.

FIG. 14 is a configuration diagram of an inner focus type lens system.

FIG. 15 is a characteristic diagram illustrating a relationship between a position of a variable power lens and a position of a focus compensating lens in accordance with a subject distance.

FIG. 16 is a configuration diagram of a switch array.

FIG. 17 is a characteristic diagram for explaining focus adjustment.

FIG. 18 is a flowchart showing a focus adjustment operation.

FIG. 19 is a block diagram illustrating a configuration of an aperture control unit.

FIG. 20 is a block diagram illustrating a configuration of a camera signal processing unit.

FIG. 21 is a block diagram illustrating a configuration of a camera signal processing unit having a negative / positive inversion function.

FIG. 22 is a configuration diagram of a negative / positive reversing unit.

FIG. 23 is a configuration diagram illustrating a display example of a still image shooting mode.

[Explanation of symbols]

 102 Fixed first group lens 103 Magnifying lens 104 Aperture 105 Fixed third lens group 106 Focus compensating lens 107 Image sensor 109 Camera signal processing unit 110 Magnifying lens motor 111 IG meter 112 Focus compensating lens motor 113 Magnifying lens driver 114 IGD driver 115 Focus Compensation lens driver 116 Aperture control unit 117 AF information processing unit 118 Lens / camera control unit 119 Syscon 120 Switch row 125 Display control unit 126 LCD 127 Character generator 203, 204 Integrator 205 Camera control unit 210 Memory 809 Reference Signal generator

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Claims (9)

[Claims] An imaging unit that captures a subject image and outputs an image signal; a lens system that forms the subject image on an imaging surface of the imaging unit; and an adjustment unit that adjusts optical conditions of the lens system. An imaging apparatus, comprising: a determination unit configured to determine whether an optical condition of the lens system is being adjusted, and to prohibit photographing by the imaging unit when the adjustment is being performed. 2. The imaging apparatus according to claim 1, wherein said adjusting means adjusts said optical condition by moving at least one lens in said lens system. 3. The imaging apparatus according to claim 1, wherein said adjusting means adjusts the amount of incident light of said lens system. 4. The imaging apparatus according to claim 1, further comprising a notification unit that notifies an operator that the optical condition of the lens system is being adjusted. 5. An apparatus according to claim 1, further comprising a permission unit for judging whether or not the optical condition of the lens system has been adjusted by adjusting the optical condition, and permitting the photographing by the imaging unit when the optical condition has been adjusted. The imaging device according to claim 1. 6. A notifying means for notifying an operator that photographing by said image pickup means is possible when an optical condition becomes proper by adjusting an optical condition of said lens system. An imaging device according to any one of the preceding claims. 7. A signal processing means for processing an image signal obtained from said imaging means, wherein said prohibition means makes said determination based on the signal processed by said signal processing means. The imaging device according to 1. 8. A signal processing means for processing an image signal obtained from said imaging means, wherein said permission means makes said determination based on the signal processed by said signal processing means. 5. The imaging device according to 5. 9. A process of imaging a subject image by an imaging unit and outputting an image signal; a process of adjusting an optical condition of a lens system for forming the subject image on an imaging surface of the imaging unit; And a computer-readable recording medium storing a program for executing a process of determining whether or not the camera is being adjusted, and a process of prohibiting imaging by the imaging unit when it is determined that the adjustment is being performed. .