KR0177978B1 - A camera - Google Patents

Abstract

A release switch in which an operation state is changed from release 1 stage to release 2 stage according to a user's selection operation; A shooting mode switch; A bulb shooting time setting unit; Automatic ranging means for measuring a distance of a projectile when the first stage of the release switch is operated and outputting an electrical signal corresponding thereto; Brightness metering means for measuring the brightness of a subject and outputting an electrical signal corresponding to the first stage of the release switch; When the bulb shooting mode is set according to the shooting mode switch operation, the bulb shooting time is set according to the operation of the bulb shooting time setting unit, and the shutter driving signal is output during the bulb shooting time set by the release switch to perform shooting. Photographing control means; A camera capable of setting a time for bulb photography, which comprises a shutter drive means for controlling the opening and closing operation of the shutter according to the shutter drive signal output from the photographing control means, is easily photographed, and bulb photography is easily performed. Regardless of the experience of the subject can be taken to take a picture that is appropriate exposure according to the situation of the subject, it can provide a control method.

Description

Camera that can set the time of bulb shooting and its control method

1 is a block diagram illustrating a configuration of a camera capable of setting a time for bulb photography according to an embodiment of the present invention.

2 is an operation flowchart of a camera that can be set at the time of bulb shooting according to an embodiment of the present invention,

3 is an operation flowchart according to the time setting during bulb shooting according to an embodiment of the present invention,

4 to 9 are state diagrams of an information display unit showing time setting operations during bulb shooting according to an embodiment of the present invention.

10 is a block diagram illustrating a configuration of a photographing controller according to an exemplary embodiment of the present invention.

The present invention relates to a camera capable of setting a time when shooting a bulb and a control method thereof. More specifically, when a photographer sets an exposure time and operates a shutter button during a bulb shooting, the exposure time is automatically set during the set exposure time. The present invention relates to a camera capable of setting a time for bulb photography to perform bulb photography and a control method thereof.

Common shutter speed settings for single-lens reflex cameras range from 30 seconds to as low as 1 / 8,000 seconds (the maximum shutter speeds vary by camera type). In the single-lens LEF camera, in order to perform exposure in a manual exposure mode longer than 30 seconds, the bulb shooting mode is set.

The bulb shooting mode is a mode in which a long time exposure is performed without using a flash, and a photographer takes a picture by setting a shutter opening time according to a subject situation, and is generally used for shooting a night scene.

As a bulb photographing method, a photographer first sets a bulb mode, and then a shutter film is opened to expose the film surface while the photographer presses the shutter button while composing.

Another method is to press the shutter button once while the bulb mode is set to open the shutter, and to press the shutter button again to close the shutter to complete the exposure.

However, in the conventional bulb photography as described above, it is very important to maintain a proper exposure time by taking a long time exposure without using a flash when the subject is dark, so that the proper exposure time is mainly used by the photographer. Rely on experience.

That is, by experience, an appropriate exposure time is set according to the situation of the current subject, and the photographer should press the shutter button for the time to be exposed.

Therefore, when an inexperienced photographer takes a bulb shot, it is not easy to take a picture in which an appropriate exposure has been made, and the trouble of pressing the shutter button for a desired exposure time occurs.

Therefore, an object of the present invention is to solve the above-mentioned disadvantages, and when the user sets the exposure time at the time of bulb shooting, the bulb shooting during the bulb shooting can be performed by automatically opening the shutter for the set exposure time. It is to provide a camera capable of setting a time and a control method thereof.

In addition, another object of the present invention is that when the photographer sets the exposure time and operates the shutter button at the time of bulb shooting, the timer mounted inside the camera counts the set time and ends the shooting at the set time, thereby making the shooting operation impossible. The present invention aims to provide a camera and a control method capable of setting a time for bulb photography that can take a photo in which a proper exposure is made according to a subject situation regardless of the photographer's experience.

The configuration of the present invention for achieving the above object,

A release switch in which an operation state is changed from release 1 stage to release 2 stage according to a user's selection operation;

A shooting mode switch for setting a bulb shooting mode;

Time setting switch to select facility setting mode for setting bulb recording time and minute setting mode for setting minute and second setting mode for setting second, bulb hour or hour or minute or second A bulb shooting time setting unit which is connected to a time up switch for increasing and a time up switch for decreasing the hour, minute, or second of the bulb shooting time by a predetermined value;

Automatic ranging means for measuring a distance of a subject and outputting an electrical signal when the first stage of the release switch is operated;

Brightness metering means for measuring the brightness of a subject and outputting an electrical signal corresponding to the first stage of the release switch;

When the bulb shooting mode is set according to the shooting mode switch operation, the bulb shooting time is set according to the operation of each switch of the bulb shooting time setting unit, and the shutter driving signal is output during the bulb shooting time set according to the release switch operation to perform shooting. Photographing control means for performing;

And shutter driving means for controlling the opening and closing operation of the shutter according to the shutter driving signal outputted from the photographing control means.

Another configuration of the present invention for achieving the above object,

Setting a shooting mode according to the shooting mode switch operation;

When the bulb shooting mode is set according to the shooting mode switch operation, the setting mode for changing the time of the bulb shooting time or the minute setting mode for changing the minute of the bulb shooting time or the bulb shooting time according to the operation of the time selection switch Setting a second setting mode for changing the second;

Setting the hour, minute, or second of the current bulb shooting time by a predetermined value according to the operation of the time up switch in the facility setting mode, the minute setting mode, or the second setting mode;

Setting the hour, minute, or second of the current bulb shooting time by a predetermined value in the facility setting mode, minute setting mode, or second setting mode;

Measuring the distance of the subject and the amount of brightness according to the operation of the first release switch when the bulb photographing time is set;

Starting the counting of the set bulb shooting time and starting the shooting operation by opening the shutter when the second release switch stage is operated;

It is determined whether the bulb shooting time has elapsed, and if the bulb shooting time according to the bulb shooting has not elapsed, the shutter is continuously opened. When the bulb shooting time has elapsed, the shutter is closed to terminate the shooting operation. Is done.

With the above configuration, the most preferred embodiment which can be easily carried out by those skilled in the art with reference to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 illustrates a structure of a camera that can be set at time of bulb photography according to an exemplary embodiment of the present invention, and FIG. 10 illustrates a structure of a photographing controller.

As shown in FIG. 1, the configuration of a camera capable of setting a time for bulb photography according to an embodiment of the present invention includes a release switch S1, a shooting mode switch S2, a time setting switch S3, When the bulb shooting mode is set according to the shooting mode switch S2 and the auto metering unit 10 for measuring the distance of the subject, the luminance meter 20 for measuring the subject brightness, and the release switch S1, the release switch S1 is operated. Outputting the shutter driving signal, and then counting the set time according to the operation of the time setting switch S3, and stopping the output of the shutter driving signal when the set time elapses, thereby controlling the shooting operation. A shutter driver 40 for controlling the opening and closing operation of the shutter according to the shutter driving signal output from the shutter driver; an information display unit 50 for displaying information corresponding to the shooting operation of the camera; / Film made of a motor (M1) and the motor drive section 60 for driving the focus motor (M2) to perform a rewinding operation.

The time setting switch S3 is a time up setting switch S31, a time down setting switch S32, and a time selection switch S33 that can be set by selecting seconds, minutes, and hours of time. Is done.

As shown in FIG. 10, the photographing controller 30 includes a bus 34 for transmitting data and control signals, a plurality of switches connected to the output terminals of the plurality of switches S1-S3, and an automatic ranging unit. An input port 31 that receives a switch signal and a ranging signal of the input signal 31 and outputs it on the bus 34 and the bulb photographing mode according to the switch signal input through the input port 31 connected to the bus 34. A CPU 32 for setting a bulb shooting time after the setting, displaying a set bulb time, and outputting a plurality of control signals for performing a shooting operation according to the set bulb time on the bus 34; The oscillation section 35 for outputting the clock signal necessary for the operation of the operation 32, the ROM 35 in which the operation program necessary for the basic operation of the CPU 32 is stored, and the plurality of data on the bus 34 and the camera. Data for all functional modes A built-in RAM 36, an output port 37 for outputting a control signal connected to and applied to the bus 34, and a photometric signal from the luminance meter 20 to be converted into a digital signal And an A / D converter 38 for outputting on the bus 34.

Next, a description will be given with reference to FIGS. 2 and 3 attached to the operation of the camera that can set the time during bulb photography according to the embodiment of the present invention having such a structure.

When power is applied to the camera, the photographing controller 30 initializes all operation circuits and use parameters (S110), and then detects a photographing mode set according to the photographing mode switch S2 selecting operation of the photographer.

When the photographer operates the shooting mode switch S2 to select a desired shooting mode according to the situation of the subject, a switch signal according to the shooting mode switch S2 is input to the shooting control unit 30 through the input port 31. It is input to the CPU 32 via the bus 34. The CPU 32 of the shooting mode switch S2 checks the number of operations of the shooting mode switch S2 according to the input signal in this way, and reads out and sets the corresponding shooting mode set in the RAM 36 according to the number of operations. . For example, when the photographing mode switch S2 is operated once, it may be set to the auto flash mode, and when the photographing mode switch S2 is operated twice, the bulb photographing mode or the like.

When the bulb shooting mode is set according to the operation of the shooting mode switch S2, the shooting controller 30 switches the shooting mode to the bulb shooting mode, and then the bulb shooting time according to the operation of the time setting switch S33. That is, the exposure time is set.

In the above, when the bulb shooting mode is set, the photographing controller 30 branches to the exposure time setting routine according to the bulb shooting mode shown in FIG. 3 and sets a different exposure time according to the intention of the photographer.

As shown in FIG. 3, when the bulb shooting mode is set according to the shooting mode switch S2, the CPU 32 of the shooting controller 30 outputs the segment driving signal to the information display unit 40. As shown in FIG. 5, the segment 41 for time setting is turned on (S310). The segment drive signal output from the CPU 32 is input to the information display unit 40 via the bus 34 and the output port 37.

The segment 41 for time setting according to the embodiment of the present invention is turned on in the blinking operation.

When the initial bulb shooting mode display operation is completed, the CPU 32 of the shooting controller 30 branches to the time setting routine to set a desired exposure time according to the operation of the photographer's time setting switch S33.

First, it is determined whether the time setting switch S33 is operated (S320), and when a signal according to the time selection switch S3 operation is input through the input port 31, it is determined whether the current state is the time unit setting state ( S330), in the case of the time unit setting state, the minute unit setting mode is set, and then the minute unit segment M is turned on via the information display unit 40 as shown in FIG. 6 (S340-S350).

In addition, if the current state is not the time unit setting state according to the operation of the time setting switch S33 in the above, it is determined whether it is the minute unit setting state (S360), and if it is the minute unit setting state, the second unit setting mode is set. Next, as shown in FIG. 7, the second segment S is turned on (S370-S380).

In addition, when the current state is the second unit setting state, the time unit setting mode is set, and the time unit segment H is turned on as shown in FIG. 5 (S390-S410).

When the hour or minute to be changed according to the operation of the time setting switch S3 and the second are set, the hour or minute and second currently set according to the operation of the time up switch S31 and the time down switch S32 are set. Increase or decrease.

First, when the time up switch S31 is operated, it is determined whether the mode set according to the operation of the time setting switch S33 is the hourly setting mode (S420-S430). To set it.

At this time, the photographing control unit 30 increases the time unit segment H of the information display unit +1 to indicate that the exposure time is increased by +1 hour to the photographer.

In the above minute setting mode, the current setting minute is increased by +1, and the minute segment M of the information display unit 40 is increased by +1 to indicate that the minute according to the exposure time is increased by +1 minute. (S450-S460).

In addition, in the case of the second unit setting mode, as shown above, the number of seconds is increased by +1, and then, +1 second is increased through the information display unit 40 (S470-S480).

When the time up switch S31 is not operated in the above, it is determined whether the time setting switch S33 is in operation (S490), and when the time down switch S32 is operated, the time up switch S31 In the same manner as the increment operation of hours, minutes, and seconds (S420 to S480), the reduction operation of the set current hours, minutes, and seconds is performed.

That is, according to the operation of the time down switch S32, the current time hour, minute and second are reduced by +1, and the hour or minute and second are set to decrease, and the segment 41 of the information display unit 40 is reduced by +1. The photographer indicates whether the exposure time is reduced (S490-S550).

As described above, the photographing control unit 30 sets the exposure time during bulb photographing according to the time setting switch S33, and then returns to the main routine shown in FIG. 2 to attach the release switch S1. Perform the shooting operation depending on whether it is working.

According to an exemplary embodiment of the present invention, when the exposure time set according to the bulb shooting mode is displayed through the segment 41 of the information display unit 40, it is as shown in FIG. 8, and FIG. The state is set to 1 hour 10 minutes 30 seconds.

When the first stage of the release switch is operated, the photographing controller 30 drives the autoranger 10 to measure the distance to the subject, measures the luminance of the subject through the luminance meter 20, and then releases the subject. It is determined whether the second switch operation (S150-S170).

The ranging signal corresponding to the subject distance measured by the automatic metering unit 10 is input to the CPU 32 through the input port 31, and the photometric signal corresponding to the subject luminance measured by the luminance metering unit 20. The digital signal is converted into a digital signal through the A / D converter 38 and input to the CPU 32 and 32.

In this case, when the first stage of the release switch is operated, the CPU 32 of the photographing controller 30 displays all the photographing information according to the current photographing mode through the information display section 40 as shown in FIG. do.

When the second stage of the release switch is operated, the CPU 32 of the photographing controller 30 starts a counting exposure time by operating a timer (not shown) inside, and outputs a shutter driving signal to start a photographing operation ( S180 ~ S190).

The shutter drive signal is input to the shutter driver 50 through the output port 37, and the shutter driver 50 opens the shutter in accordance with the shutter drive signal to perform exposure.

After the exposure, that is, the photographing operation is started, the photographing controller 30 determines whether the set exposure time has elapsed according to the bulb photographing mode (S200), and if the exposure time has not elapsed, the shutter continuously counts the set exposure time. To stay open.

When the exposure time set according to the bulb shooting has elapsed, the CPU 32 of the capturing controller 30 stops output of the shutter driving signal, and accordingly, the shutter driving unit 50 closes the shutter (not shown) and shoots. End (S210).

When the photographing operation ends, the photographing controller 30 drives the motor driver 60 to wind up the photographed film and ends the photographing routine (S220-S230).

As described above, according to the embodiment of the present invention, when the photographer sets the exposure time and operates the shutter button at the time of bulb shooting, the timer mounted inside the camera counts the setting time and ends the shooting at the setting time. Bulb shooting takes place automatically during the set time.

In addition, it is possible to provide a camera capable of setting a time when bulb photography has an effect of capturing a photo in which a proper exposure is made according to a subject situation regardless of the photographer's experience, and a control method thereof.

Claims (7)

A release switch in which an operation state is changed from release 1 stage to release 2 stage according to a user's selection operation; A shooting mode switch for setting a bulb shooting mode; The time selection switch to select the setting mode for setting the hour of the bulb shooting time, the minute setting mode for setting the minute, and the second setting mode for setting the second, and the hour, minute, or second of the bulb shooting time A bulb shooting time setting unit comprising a time up switch for increasing and a time up switch for decreasing the hour, minute, or second of the bulb shooting time by a predetermined value; Automatic ranging means for measuring a distance of a projectile when the first stage of the release switch is operated and outputting an electrical signal corresponding thereto; Brightness metering means for measuring the brightness of a subject and outputting an electrical signal corresponding to the first stage of the release switch; When the bulb shooting mode is set according to the shooting mode switch operation, the bulb shooting time is set according to the operation of the bulb shooting time setting unit, and the shutter driving signal is output during the bulb shooting time set by the release switch to perform shooting. Photographing control means; A camera capable of setting a time for bulb photography, comprising shutter driving means for controlling the opening and closing operation of the shutter according to the shutter driving signal output from the shooting control means. The camera according to claim 1, further comprising information display means for displaying a shooting state, the segment including a bulb for displaying a bulb shooting time according to the bulb shooting mode. The apparatus of claim 1, wherein the photographing control means comprises: a bus for transmitting a switch signal and a control signal, and a plurality of switch signals connected to the bulb time setting unit to receive a plurality of switch signals according to each switch operation and output the same on the bus. Second setting for changing the setting mode for changing the hour of the bulb shooting time or minute setting mode for changing the minute, or second, depending on the input port and the switch signal connected to the bus via the input port. Set each mode, and then set the current hour, minute, or second by a constant value according to the operation of the time-up switch in the set mode, and set the current hour, minute, or second by the operation of the time-down switch. A central processing unit configured to decrease a value and output a control signal for performing bulb photography for the set bulb imaging time; And an output port for outputting a control signal connected to the bus and outputting the control signal to the corresponding device. The minute setting unit for changing the time setting mode or minute for changing the time of the bulb shooting time according to the mode set by the time selection switch, according to claim 2 or 3. A control signal for respectively displaying a mode or a second setting mode for changing a second, wherein the information display means displays a facility setting mode, a minute setting mode or an ultra setting mode according to the control signal; Camera that can set the time when shooting. The method according to claim 2 or 3, wherein the central processing unit of the photographing control means increases or decreases the hour, minute, or second of the bulb photographing time which varies according to the operation of the time up switch or the time down switch. A control signal for displaying a value is output, and wherein the information display means displays the hour, minute, or second of the bulb shooting time which is varied according to the control signal. The method according to claim 2 or 3, wherein the central processing unit of the photographing control means outputs a control signal for displaying all photographing information corresponding to the bulb photographing mode and the set bulb photographing time when the first stage of the release switch is operated. And the information display chatter displays shooting information according to the control signal. Setting a shooting mode according to the shooting mode switch operation; Setting a facility setting mode for changing the time of the bulb shooting time or a second setting mode for changing the minute of the bulb shooting time when the bulb shooting mode is set according to the shooting mode switch operation; Setting the current bulb photographing time by increasing the hour, minute, or second by a predetermined value according to the operation of the time up switch in the facility setting mode, the minute setting mode, or the second setting mode; Setting the hour, minute, or second of the current bulb shooting time by a predetermined value in the facility setting mode, minute setting mode, or second setting mode; Measuring the distance of the subject and the amount of brightness according to the operation of the first release switch when the bulb photographing time is set; Starting the counting of the set bulb shooting time and starting the shooting operation by opening the shutter when the second release switch stage is operated; It is determined whether the bulb shooting time has elapsed, and if the bulb shooting time according to the bulb shooting has not elapsed, the shutter is continuously opened. When the bulb shooting time has elapsed, the shutter is closed to terminate the shooting operation. The control method of the camera which can be set at the time of bulb shooting, characterized in that made.