JPH01310332A - Camera - Google Patents

Abstract

PURPOSE:To surely photograph by the desired composition at the time of self photographing by comparing the output of a range-finding device and the output of a composition setting device, deciding that an object is at the specific position and controlling shutter release based on the decided output and the output of a receiver. CONSTITUTION:A remote control device 3, which is composed of a transmitter 1 and the receiver 2 which remote-control shutter release timing, is provided. The range of the object which is present at the specific position in a photographing image frame is found by the range-finding device 4, the output of the composition setting device 5 is compared with the output of the device 4, and the title camera decides 6 that the object is at the specific position. The shutter release or display is carried out by a control device 7 based on the decided output and the output of the receiver 2. In the self photographing mode, whether the object is in the desired composition or not is noticed to the photographer who is the object by the display control by means of the device 7, and when it is in the desired composition, the shutter release by the device 7 is allowed, and the photographing by the remote operation is carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a camera, and more particularly to a camera that can take pictures remotely using a remote control means.

[Prior Art] Cameras with a so-called self-timer mechanism, which start exposure after a predetermined time has elapsed after a photographer presses a release button when photographing himself or herself, are generally in widespread use. With this type of camera, the camera emits a sound or light just before the photo is taken to notify the photographer of the timing of the photo shoot, and the development of technology that makes the photo timing even easier to understand. However, no further progress has been made.

Therefore, there is a need for a camera that has a self-release function that allows a photographer, who is a subject, to arbitrarily remotely control the timing of photographing from a position away from the camera.

[Problems to be Solved by the Invention] However, cameras that control the release timing of the camera using a method other than pressing the release button have been known for a long time.For example, there are cameras that take pictures when an infrared sensor is passed across the subject. etc. are not widely used, but are used by experts.

In this way, remote-controlled camera release operations have the potential to develop in various ways, but on the other hand, when ordinary users use remote control to take selfies, they are unable to look through the viewfinder. It causes many problems. For example, recently, cameras with an autofocus (hereinafter abbreviated as AF) mechanism that automatically focuses on a subject at a predetermined position in the shooting frame have become popular;
As shown in the figure (^), in the case of a camera in which the distance measurement frame 9 is located only in the center of the photographic image frame 8, the subject will be "out of focus" if the composition is such that the subject is located at a position other than the center. In order to reduce the probability of such "out of focus",
Cameras with multiple ranging frames have also been proposed, but for example, as shown in FIG. 2(B), three ranging frames 9a and 9b are used.
, 9c also has distance measuring frames 9a, 9b, 9c.
Similarly, if the subject is outside the “
The image will be out of focus.

Furthermore, even if the subject falls within the distance measuring frame, the third
If you want a composition like the one shown in Figure (A), on the other hand, for example, if you want a composition where the subject is extremely small compared to the background as shown in Figure 3 (B), or if you want the composition shown in Figure 3 (C ), there is a risk that the subject will be extremely large in the composition.

Furthermore, even if you want the composition shown in Figure 4 (A), a camera with the Δl distance frame 9 shown in Figure 2 (A) above that can only measure distance from a single point in the center of the photographic image frame. Therefore, even if you increase the aMj range frame unnecessarily, as shown in Fig. 4(B), it is difficult to take a picture with the subject in focus. There is a risk that the subject will fall within the 11-lens frame 9a and a composition that is contrary to the photographer's intention may be drawn.

Furthermore, if it is possible to remotely control the camera body from all directions, the release will be performed even when the subject is not within the photographic image frame 8, making it difficult to take pictures when traveling alone. There is a risk that the precious photos taken will be wasted.

The purpose of the present invention is to prohibit compositions that are contrary to the photographer's intention,
The objective is to provide a camera that allows self-photography without mistakes.

[Means and effects for solving the problems] The camera of the present invention includes a remote control means 3 consisting of a transmitter 1 and a receiver 2 for remotely controlling the timing of shirt release, and a remote control means 3 that is placed at a predetermined position in the photographic image frame. 1i of the existing subject
A 111j distance means 4 for determining the 111j distance, a composition setting means 5 for the photographer to set the composition in advance, and a comparison between the output of the distance measuring means 4 and the output of the composition setting means 5 to determine whether the subject is in a predetermined position. It is equipped with a determination means 6 for determining whether there is a certain thing, and a control means 7 for controlling the shirt release or display based on the output result of the determination means 6 and the output of the receiver 2, and in the self-photography mode, The display control by the control means 7 informs the photographer, who is the subject, whether or not the subject is in the desired composition, and when the subject is in the desired composition, the control means 7 allows the shirt release to be performed by remote control. Enables photography.

[Example] First, prior to a detailed explanation of the present invention, the relationship between subject distance and composition will be explained.

Figure 5 shows the distance g to the subject 10, which is the photographer himself, and
The relationship with the angle of view θ of the camera 11 is shown. Even though there are individual differences, the subject 10 can be considered to have a substantially constant shoulder width, and this shoulder width is assumed to be 2W, and as shown in FIG. 6(A), it occupies 1/3 of the photographic image frame 8. In the case of a composition that captures the upper body of the subject 10, the following relationship (1) holds true. Further, if the focal length of the photographing lens is fo, and the half length of the image frame on the film photosensitive surface 12 is d, then tan θ-d/f... (2) is obtained. In other words, from the above equations (1) and (2),

Naturally, this relationship holds true for the subject 1, as shown in Figure 6 (B).
This also holds true for compositions in which 0 is located at a position other than the center of the photographic image frame 8.

Furthermore, as shown in FIG.
If you want to obtain a composition that captures the whole body of a person, then That is, if the film size and the focal length fo of the camera are determined, it is possible to uniquely determine the subject distance p by considering the human shoulder width 2W as approximately constant by selecting the composition.

8(A) and (13) show the external appearance of a camera according to an embodiment of the present invention, and FIG. 9 shows the external appearance of a remote control transmission device (hereinafter abbreviated as remote control device) used in this camera. show.

The camera 11 shown in FIGS. 8(A) and 8(B) is
It has a function that allows self-photography using the remote control device 26 shown in the figure. As shown in FIG. 8(A), an AF photographing lens fij9j 14 is attached to the front of the main body 13 of this camera 11, and a strobe 15 is provided on one side of the lens, and a strobe 15 is provided on the other side. On the side, there is a light that lights up to give a warning when the intended composition cannot be obtained, such as when the subject is too fast or too close in self-mode, or when the subject is not in the specified position in the shooting image frame. A light emitting display element 16 made of a ED is provided.

In addition, the finder objective window 1 is located at the upper center of the camera body 13.
7a, a light-receiving lens 19 for infrared active triangulation is provided above the side thereof, and a light projecting lens 18 is provided below the light-receiving lens 19.

As shown in FIG. 8(B), on the top surface of the camera body 13, a release button 20 is provided at a position that can be operated with the right hand while looking through the finder eyepiece window 17b on the back, and a push button is provided at a position where it can be operated with the left hand. Self mode setting switch 21
．． A remote control prohibition switch 22 and a composition setting switch 23 are provided. When the self mode is not set by the self mode setting switch 21,
The remote control device V1t26 enables camera operation from all directions, and when the remote control prohibition mode is set by the remote control prohibition switch 22, remote control by the remote control device 26 becomes impossible.

Also, when the self mode is set by the self mode setting switch 21, the composition setting switch 23
6f! shown in FIGS. 10(A) to 10(P)! ! You can choose from a variety of compositions. In addition, the camera body 1
3 is provided with a light receiving sensor 24 that can receive infrared light signals transmitted from a remote control device 26 from all sides of the camera body 13, and a liquid crystal display for checking the set composition and mode. A plate 25 is provided.

Each time the composition setting switch 23 is pressed once, the first
The six types of compositions shown in FIGS. 0 (A) to (P) are selected and set in order, and the selected compositions are displayed on the display board 25. In the case of a composition showing only the upper body of the subject shown in FIGS. 10(A) to (C), the subject distance #Ig is determined using the above equation (3), and FIGS. 10(D) to ([ In the case of a composition showing the whole body of the subject as shown in '), the above (4)
The subject distance g is determined using the formula. Figure 10 (A)
, (D) shows the subject in the center 11!1 aperture frame 9b.
Figures 10 (B) and (E) show compositions that fall into the left distance measuring frame 9c, and Figures 10 (C) and (P
) respectively indicate compositions that fall within the distance measuring frame 9a on the right side.

As shown in FIG. 9, a light emitting cable 27 made of an infrared light emitting diode is provided on the front of the main body of the remote control device 26, and a push-button release switch 28 and a composition confirmation switch 29 are provided on the side. ing. Composition confirmation switch 2
When you press 9, the camera 11 performs distance measurement each time as described below, and when the subject is at an appropriate distance and position, and the preset composition among the six types described above is satisfied, the camera 11 measures the distance each time. The light-emitting display element 16 blinks, and at other times the light-emitting display element 16 lights up as a warning, so that in either case it can be confirmed whether the position of the subject is correct. Although not shown, it is also effective to further provide a buzzer or the like on the camera body 13 and to emit a warning sound by changing the tone of the buzzer.

Also, when the release switch 28 is pressed, the camera 1
1 performs distance measurement, and if the distance and position of the subject satisfy a preset composition, a shirt release is performed.

If the set composition is not satisfied, a warning will be issued by the light emitting display element 16 as well.

FIG. 11 is a block diagram of the electric circuit inside the camera body 13. The AF distance measuring section 31 is independent as a distance measuring block, and starts distance measuring according to a command from the CPU 32.

Details of this AF ranging section 31 will be described later. In this distance measurement, a relative distance of 7
111 distance data is output. When distance measurement is finished, the CPU
A distance measurement end signal is sent to 32. The CPU 32
When the P1 distance end signal is received, the serial clock is
In response to this, the distance measurement data of the three points measured using the three ΔP1 range frames 9a, 9b, and 9c are sent as a serial signal from the A F 1iFI range unit 31 to the CPU 32. A F jl$1 distance operation is completed. The distance measurement of the three points is performed in a time-sharing manner.

Next, when the release button 20 (see FIG. 5(B)) is pressed halfway, the lens motor 35 is driven via the A E a111 section light 3 and the motor drive section 34, and the A
The focal length f is calculated based on the A F D short data from the F side focal length section 31. The photographing lens is driven to the position.

In this case as well, the position of the photographing lens is controlled by being fed back to the AE#J optical unit 3 optical combiner 33 and the CPU 32 by the encoder 36. Subsequently, when the release button 20 is fully pressed, the lens motor 35 performs a shutter operation to perform exposure. after that,
The wind motor 37 advances the film frame by frame, and the series of operations is completed.

Note that when converting the AF 21Fj distance data to lens position data, mechanical variations in the lens position may be considered, but these values are stored in the E2-PROM38 as :J3 maintenance data during production. .

Sokote, CPU32GtA Fa$J distance data small data E
2-Accurate lens position can be calculated using the data in PROM 38. Further, the AE photometry section 33 is originally an IC for photometry.
Therefore, the CPU 32 controls the shutter based on the photometry value of the AE photometry section 33. In the case of Kono, E 2-P
ROM 38 memorizes the photometry data and the E2-PROM 38
Calculate the correct exposure time using the data. E2-FR
Signals are exchanged between the OM 3g and the CPU 32 by serial communication for data writing and reading, and by direct line control for their status.

The strobe 15 starts charging in response to a signal from the CPU 32, and notifies the CPU 32 of the end of charging.
returns the charging stop signal to the strobe 15. Strobe light emission is also performed by a signal from the CPU 32. Note that the ceramic oscillator 39 is for generating a basic clock for the CPU 32.

Also, only when the switch manual state control line 40 of the CPU 32 is at the "L" level, the self mode setting switch 21. The remote control prohibition switch 22 and the composition setting switch 23 are configured to be accepted.

The CPU 32 also exchanges signals with a remote control light receiving section 41 that receives infrared light transmitted from the remote control device 26 and processes the signal. In detail, the remote control light receiving section 41 is constructed of a circuit as shown in FIG. 12. In the remote control light receiving section 41, the light receiving sensor 24 exposed and disposed on the upper surface of the camera body 13 includes the remote control device 2.
A foot diode having a sensitivity band of the same wavelength as that of the light projecting element 27 of No. 6 is used. The preamplifier 42 includes a bypass filter 47 having resistors 43, 44.45 and a capacitor 46 connected to the input/output terminal of the amplifier 42 and the reference voltage V rel' application terminal, as well as the light receiving sensor 2.
The stationary light component included in the photocurrent in step 4 is cut off, and the signal photocurrent is converted into voltage.

The photocurrent converted into this voltage is guided to a band pass filter (hereinafter abbreviated as BPF) 48 at the next stage. This B
The passing frequency of the PF 48 is designed to have a peak of 32 Kllz, and other high frequency components are blocked here as noise. The BPF 48 has a frequency component element (first
(see Figure 4 (B)) is amplified and led to the next stage. BPF4
The output of 8 is sent to the first comparator 49.8 in the next stage. Low pass filter (LPF) 50 and second comparator 51
are input to the CPU 32. therefore,
The transmission waveform from the remote control device 26 (see FIG. 14(^)) is converted into a waveform as shown in FIG. 14(B), and its frequency f is read by the CPU 32. In other words, the signal light received by the remote control light receiving section 41 is turned on at a frequency f (1/fx) of 4KIIz or 8K)+2 as described later.

It is a modulated wave of 32KI (z) that is turned off, and when the frequency f is switched on the remote control device 26 side, the remote control light receiving section 4
In No. 1, two types of remote operations can be identified: the above-mentioned shirt release and composition confirmation.

The remote control device 26 is constructed of a circuit as shown in FIG. The oscillator 52 is a circuit that oscillates a frequency signal of 32K Ilz, and the frequency divider 53 divides the frequency of 32K Ilz into 8K Ilz, and the frequency divider 54 divides the frequency into 4K Ilz. The output of the frequency divider 54 is led as one of the switching logic circuits 55 and Henand gates 56,
The output of the frequency divider 53 is similarly led to one of the Nant gates 57 of the switching logic circuit 55. The other input terminal of the Nantes gate 56 is connected to the connection point between the release switch 28 and the pull-up resistor 58, and the other input terminal of the Nantes gate 57 is connected to the connection point between the composition confirmation switch 29 and the pull-up resistor 59. ing.

In other words, when the release switch 28 is turned on, 4K
)Iz signal is output from the Nantes gate 56, and when the composition confirmation switch 29 is turned on, a signal of 8Ktlz is output from the Nantes gate 57. Nantes Gate 56.5
7 is outputted from the switching logic circuit 55 through the NOR gate 60 and the inverter 61 and guided to the Nandt gate 62. In this Nantes Gate 62,
The AND signal of the 4KHz or 8KHz signal from the switching logic circuit 55 and the 32KI (z signal) from the oscillator 52 is supplied to the 1RED driver 63. Therefore,
The IRED driver 63 moves the light emitting element 27 as shown in FIG. 14 (A
) is driven with a modulated pulse signal waveform as shown in ().

In other words, when the release switch 28 is turned on, 4Kl
z, turn on the composition confirmation switch 29 and it will be 8KIlz
The light emitting element 27 emits pulsed light, which is detected by the light receiving sensor 2.
4, the signal is read by the circuit of the remote control device 26 described above, and the two signals are identified by the CPU 32. Note that 4 KHz and 8 KHz are frequencies selected as frequencies that are easy for the CPU 32 to distinguish, and 32 KHz is a frequency that is selected as a frequency that is easy to distinguish from external light noise.

Next, the AFΔ-1 distance portion 31 in FIG. 11 will be explained in detail. Generally, there are two main types of AF systems. One is a passive method that uses brightness distribution information of the subject, and the other is an active method that has a means of projecting a signal toward the subject and uses the signal bounced back from the subject to determine the distance. be.

The AF distance measuring section 31 of the camera of this embodiment basically employs an infrared light active type triangular distance measuring method having the configuration shown in FIG.

In FIG. 15, infrared light emitted by an infrared light emitting diode (hereinafter abbreviated as IRED) 71 for distance measurement is condensed by a projection lens 18 and irradiated toward a subject 10.
The reflected light is imaged by the light receiving lens 19 onto a well-known position detection element (hereinafter abbreviated as PSD) 74 made of a semiconductor element. Photocurrents I and I2 are divided into this PSD 74 according to the imaging position, and the divided photocurrents I and I2 are supplied to an AF IC 75.

This AF IC 75 is an IRED control transistor 7
While pulsing the I RED 71 through 0,
Photocurrent ■l from the above PSD74.

The distance measurement data based on I2 is supplied to the CPU 32.

Here, when the optical axis of the light-receiving lens 1.9 is aligned with the center line of the PSD 74 and this is set as the origin, the incident position of the reflected light is X, and the distance between the principal points of the light-emitting lens 18 and the light-receiving lens 19 is The base length is S, and the focal length of the light receiving lens 19 is f.
Then, the subject distance g is given by: 1)-sf/x (5).

The light T4 streams It and I2 generated in the PSD 74 by the light reflected from the object by the IRED 71 are both proportional to the reflected light intensity, but the photocurrent ratio 11/I2 does not depend on the reflected light intensity and is determined only by the incident light position X. It is determined. If the total length of PSD74 is t, then 11/I2-(2+X)/(2-x
). If we substitute equation (5) into the above equation, we get...
(6) Therefore, if the photocurrent 11/L of the PSD 74 is determined, the subject distance ρ can be uniquely determined.

In Fig. 15 above, in order to simplify the explanation of the distance measurement principle of the active triangulation method, the configuration is shown to perform simple one-point distance measurement, but when this is applied to three-point 7111 distance, the AF1111 distance The configuration of the tip portion 31 of the portion 31 is shown in FIG.

In FIG. 16, three IREDs 71a.

3 PSD74a for 71b, 71C.

74b, 74C are used, and three IRED71
Infrared beam 7 for each 71-1 distance from a, 71b, and 71c
7a, 77b, and 77c are directed toward the subject by a light projecting lens 18, and each beam returned from the subject is sent to three PSDs 74a by a light receiving lens 19.

The light enters the corresponding PSD of 74b and 74c. In addition, in this FIG. 16, the light emitting lens 18 and the light receiving lens 19 are shown to make it easier to understand the overall configuration.
However, in reality, the horizontal arrangement shown in FIG. 16 is replaced with a vertical arrangement, that is, the light emitting lens 18 and the light receiving lens 19 are arranged as shown in FIG. 8(A). Place the three IREDs 71a and 71b vertically as shown.
.

As shown in FIG. 2(B) and FIG. 4(B), the infrared beam from 71c is transmitted to three distance measuring frames 9a.

It is necessary to correspond to 9b and 9c, respectively.

This AF? l) As a specific example of the configuration of the optical system in the j assembly section 31, the infrared beam 7 from the central IRED 71b
Left and right IRED71a for 7b.

The angle α formed by the infrared beams 77a and 77c from the IRED 71c is determined to be approximately 7°.

If the interval between 71b and 71c is gl, and the focal length of the projection lens 18 is 'al, it is designed to satisfy tan a - g l/f, (.

Also, the distance between the PSDs 74a, 74b, and 74c is set to g2.
If the focal length of the light receiving lens 19 is fa2, 'al'
``When set to a2, it is set to gl-g2.

When the optical system shown in FIG. 16 is arranged vertically with the light projecting lens 18 facing downward, when specifying the composition, the right distance measuring frame 9a of the three distance measuring frames 9a, 9b, and 9c is When selected, the above IRED 71a,
When selecting the pair of PSD74a and the central Δ11 distance frame 9b, select the pair of IRED71b and PSD74b mentioned above.
When selecting the left distance measuring frame 9C, use the above IRED71c.
, PSD74c are used to perform 1llll distance.

The reason why the PSD is divided into three is to minimize the influence of incident light from other directions when the distance is -1 from the point Δ-1, thereby improving the S/N ratio.

FIG. 17 is a specific electrical circuit diagram of the AF IC 75 to which the three IREDs and three PSDs are connected.

In FIG. 17, the photocurrent 11, I from the PSD 74a
2 is a voltage signal v at the front stage amplifiers 82a and 83a, respectively.
1 and 2, that is, the voltage is converted into a voltage according to the position of the incident light on the PSD 74a, and then the channel changeover switch 84
a, 85a, respectively. This channel changeover switch 84a.

85a is controlled by a channel switching signal from a channel switching circuit 90, which will be described later, via a switching circuit 97a.

The other PSD 74b and PSD 74c are also configured in the same manner as the above circuit. In Figure 17, PS
The circuit related to D74b has a code ending in b, and PSD7
The circuit related to 4c is shown with a C suffix.

Further, each circuit regarding these three PSDs 74a, 74b, and 74c is a switching circuit 97a.

A switching signal from the decoder 98 is sent to 97b and 97c to selectively control switching. Decoder 98 has three IR
The oscillator 95 sends a drive pulse signal of a constant frequency to the driver 99 for causing the EDs 71a, 71b, and 71c to emit pulsed light. Switching control between one-point 71p1 distance and three-point distance measurement is performed for the switching circuits 97a, 97b, and 97c. In other words, the AF sequence during three-point distance measurement is performed on a time-sharing basis in order to perform distance measurement calculations using a common IC, and the IRED71
When a is emitted, only the output of the PSD74a is processed, and the IR
When the ED 71b emits light, only the output of the PSD 74b is processed, and when the IRED 71c emits light, only the output of the PSD 74c is processed.

Regarding each circuit of the three PSDs 74a, 74b, and 74c, one of the voltage signals Vt and V2 is applied to a band pass filter (hereinafter abbreviated as BPF) 86 in a time-sharing manner according to the logic level of the channel switching signal. Supplied. The BPF 86 selectively passes only the frequency component that is the same as the frequency of the drive pulse signal emitted from the oscillator 95, and removes background light from the photocurrent of each PSD and converts only the effective reflected light from the subject into a signal component. pass. The integration switch 87 supplies the filter output of the BPF 86 to the integrator 88 in synchronization with the signal from the integration timing pulse circuit 96. The integral output v1 of the integrator 88 is the comparator 8
The output of the comparator 89 is supplied to a channel switching circuit 90 composed of a D-type flip-flop, etc., and the channel switching signal output from the circuit 90 is input to the channel switching circuit 90 and compared with the reference voltage V rat. circuits 97a, 97
b.

97c, the two channel changeover switches in each of the 280 circuits, for example PSD74
For the circuit g, channel selection switch 84 a
+85 a is controlled. The channel switching signal from the channel switching circuit 90 is also supplied to an AND gate 91 that controls the input pulse of the positive integration counter 92 and an integration timing pulse circuit 96, respectively. The positive integral number counter 92 also serves as a shift register, and when the channel switching signal from the channel switching circuit 90 becomes "H" level, the gate 91 opens, and the channel switching switches 84a and 84b are opened.

It counts the number of synchronous integrations during positive integration when 84c is on, and after the AF operation is completed, the AF data is transferred from the built-in shift register to the CPU 32 shown in FIG. Further, a total integration number counter 93 composed of a preset counter or the like counts the total number of synchronous integrations, that is, the timing pulse from the integration timing pulse circuit 96, and a termination circuit 94 that terminates the AF process when the set number of times is reached. supplies a termination signal to

The circuit operation of the AF IC 75 shown in FIG. 17 will be briefly described next. For AP operation, AF IC75 is C
The process is started by receiving an AF start signal and a basic clock signal from the PU 32.

Now, to explain the IRED 71a and the PSD 74a, when the IRED 71a starts emitting pulsed light, a photocurrent 11. A preamplifier 82a supplied with I2.

83a output voltage v1. The ratio of the peak values of the voltage waveform v1゜■ of V2 is the above-mentioned ! 1/! becomes equal to 2. Also,
Upon receiving the AF start signal, the channel switching circuit 90. The positive integration number counter 92 and the total integration number counter 93 are reset. At this time, since the channel switching signal from the channel switching circuit 90 is "L#", the channel switching switch 84a is turned off, the switch 85a is turned on, and a voltage v2 proportional to the photocurrent! is applied to the BPF 86. When a timing pulse is applied from the timing pulse circuit 96 and the integration switch 87 is turned on, the output of the BPF 86 supplies the integrator 88 with a voltage proportional to the photocurrent I2.

Therefore, the integral output v1 of the integrator 88 is the BPF 86
Integration (inverse integration) is performed on the positive peak of the filter output signal. When the integral output v1 falls below the reference voltage Vref', the output of the comparator 89 changes from "Lo" to "H",
The channel switching signal from the channel switching circuit 90 is
Since it changes from "Lo" to "H" in synchronization with the timing pulse, the channel selection switch 84a is turned on and the switch 85a is turned off, and the voltage v2 due to the photocurrent I is applied to the BPF 86 instead of the photocurrent ■. At this time, since the integral timing pulse circuit 96 outputs a timing pulse with the frequency of the IRED drive pulse signal delayed by half a cycle compared to when the channel changeover switch 85a is on, the negative peak of the filter output signal from the BPF 86 Integration (positive integration) is performed.In this way, each time the integral output v1 exceeds the reference voltage V rat, signals proportional to the photocurrent 11.I2 are integrated in opposite directions in the direction toward the reference voltage Vrer. go.

Now, the total number of integrations is N. Then, the number of positive integrations is N, and the number of inverse integrations is N. The relationship with is S' No1llllNS+NG (7). Also, the number of positive integrations N and the number of total integrations N. The relationship is N − (1/ (I, 12) l No----
−・(8).

Therefore, the total number of integrations N counted by the total number of integrations counter 93. is always kept constant by the termination circuit 94, so the object distance g can be determined from the number of positive integrations N8 counted by the number of positive integrations counter 92.

In this way, in the normal shooting mode, the three-point aFI distance is used to minimize the possibility of the subject being out of focus. Since general cameras have a 1111 range frame only at the center point, the composition as typified by FIG. 2(A) is often out of focus.

Next, the operation of this embodiment configured as described above during self-photography will be explained based on the flowchart shown in FIG. 18.

First, when performing self-mode photography, the self-mode is set by pressing the self-mode setting switch 21. Next, it is determined whether the remote control prohibition mode is canceled or not, but the remote control prohibition switch 2
When 2 is pressed and the remote control prohibition mode is set, self-timer photography as commonly used in the past is performed. That is, at this time, the timer operates and starts counting at the same time as the release button 20 of the camera 11 is pressed. Then, the count-up and the blinking operation of the light-emitting indicator 16 are repeated until the set time of the timer has elapsed, and when the set time is reached, the count is ended and the exposure sequence is activated to start exposure. The subject 10 recognizes that the self-timer is operating by blinking the light-emitting display element 16 until the start of exposure.

When the exposure is completed, the film is wound up by one frame, the self mode is canceled, and the sequence operation ends.

Further, if the remote control prohibition switch 22 is not pressed and the remote control prohibition mode is canceled, the permissible range of distance that allows approximately the same composition as the composition selected by the input result of the composition setting switch 23, that is, the permissible minimum distance. Distance M
fJ N, maximum allowable distance fl, CDN<II,) and a specified 71N distance point (distance measurement frame) within the photographic image frame. For example, in the case of a camera whose photographic lens has a focal length of 35+u, the relationship between the composition, the Δ-1 distance point (rangefinder frame), the minimum allowable distance IN, and the maximum allowable distance NP is the first
It is determined as shown in the chart shown in Figure 9. Hereinafter, the distance measurement operation will be performed using the I RED and PS according to the distance measurement point determined at this time among the three sets of IRED and PSD.
D, and the distance is also determined based on the result determined by the CPU 32 at this time.

That is, when the remote control light receiving section 41 receives an infrared light signal from the remote control device 26, the CPU 32 determines from the output of the remote control light receiving section 41 whether this is a release signal or a composition confirmation signal based on the frequency. As mentioned above, 8K
Since the fiz signal is a composition confirmation signal, in this case, after distance measurement is performed at the aF+ distance point determined above, the above composition is determined using the data table shown in FIG. 19 stored in the CPU 32. From the human power of the setting switch 23 and the distance data g of the distance measurement point 71-1, n
<n<n ・・・・・・・・・・・・(lO)
A comparison is made of N P , and when it is satisfied, the light emitting display element 16 blinks to notify the subject that it is now possible to take a photograph with substantially the same composition as the designated composition. On the other hand, when the above formula (lO) is not satisfied, the light emitting display element 16 lights up to issue a warning. As mentioned above, it is more effective to emit a warning sound using a buzzer or the like at this time.

Further, when the output of the remote control light receiving section 41 is 4KIIz, it is the release mode, so a comparison and determination using the above equation (10) is similarly made, and when this equation (lO) is satisfied, a shirt release is performed. If the above formula (10) is not satisfied, a warning is issued as in the case of composition confirmation and no exposure is performed.

Also, even if the output of the remote control light receiving section 41 is 8KHz, the output is 4Kl.
When it is not lz, the camera does not enter 71?3 distance operation,
This prevents unnecessary malfunctions.

In addition, in the camera of this embodiment, if the self-mode setting switch 21 is not pressed and the self-mode is not set,
The camera 11 can be operated from all directions using the remote control device 26, and can be applied, for example, to photographing subjects such as animals or children approaching the camera from a distance without the subject noticing. It becomes.

[Effects of the Invention] As described above, according to the present invention, in a camera in which the release operation can be controlled remotely using a remote control means, it is possible to take pictures with a desired composition during so-called self-photography in which the photographer's mouth is the subject. It can be done easily and reliably without failure.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the schematic configuration of the camera of the present invention, and Figs. 2 (^) and (B) show how a subject is photographed with a center-point distance measuring camera and a three-point distance measuring camera, respectively. Figures 3 (A) to 3 (C) are diagrams showing a state in which the subject is located at a position outside the distance measurement point of the image frame; Figures 4 (A) and (B) are diagrams showing the subject positioned at the distance measurement points for the intended composition and other compositions. Figure 5 is the relationship between subject distance, subject width, and image frame size. Plan views of the camera and subject to explain this, Figure 6 (^) and (
B) is a diagram explaining the case where the width of the subject occupying the photographic image frame is set to 1/3 in Fig. 5 above, and Fig. 7 is a diagram explaining the case where the width of the subject occupying the photographic image frame is set to 1/3 in Fig. 5 above. 8(A) and (B) are a front view and a plan view of a camera showing an embodiment of the present invention. FIG. 9 is a diagram illustrating the case where the camera is set to ), (B) is a perspective view of the remote control device used in the camera shown in FIG.
Figure 11 is a block diagram of the electric circuit of the camera shown in Figures 8 (A) and (B), Figure 12 is a pattern showing the six types of compositions set by the camera shown in B). The electrical circuit diagram of the remote control light receiving section in Fig. 11 above, Fig. 13 is the electrical circuit diagram of the remote control device shown in Fig. 9 above, and Fig. 14 (^) and (B) show the transmission from the remote control device. Each waveform diagram of the signal and the output signal from the remote control light receiving section, FIG.
A schematic configuration diagram illustrating the j-distance principle, FIG.
The arrangement diagram of the optical system, etc. for three-point distance measurement in the A Fill distance section in Figure 1, and Figure 17 are the AFJ in Figure 15 above.
[A block diagram showing the electric circuit of the IIC; FIG. 18 is a flowchart for explaining the self-mode operation of the camera shown in FIGS. 8(A) and (B); FIG. 19 is a diagram showing the camera body 3 is a chart showing the relationship between the composition, the Δ1j distance point, and the allowable distance range, which are stored as a data table in FIG. 1...... Transmitter 2... Receiver 3... Remote control means 4...
..... Distance measuring means 5 ..... Composition setting means 6 ..... Determination means 7 ..... Control means 10 ... ...Subject (photographer) 11...Camera 16...Light-emitting display element 21...Switch for self-mode setting 22...
. . . Remote control prohibition switch 23 . . . Composition setting switch (composition setting means) 26 . . . Remote control device (transmitter) 31 . Distance means) 32...CPU (judgment means, control means) 41...Remote control light receiving section (receiver) 1st eye, 5T) 50 Kon7 Kasumi8 Country+9. 7) 9 times, 4) 10 (Foundation) (A) Old) (C) (D) Old) (F) , f) + t 3F) 12 yen, f) 13 El

Claims (1)

[Claims] (1) A remote control means consisting of a transmitter and a receiver for remotely controlling the timing of the shutter release, a distance measuring means for measuring the distance to a subject existing at a predetermined position in the photographic image frame, and a means for determining the composition in advance by the photographer. a composition setting means for setting the composition; a determination means for comparing the output of the distance measuring means and the output of the composition setting means to determine that the subject is in a predetermined position; and an output result of the determination means and the reception. 1. A camera comprising: control means for controlling shutter release or display based on the output of the camera.