JPH10254021A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent failure caused by camera shake by inhibiting the operation of a camera by actuating the release button of the camera so that the operation may not be performed and permitting only the release signal of a remote control device in the case of a long shutter time photographing mode and a specified mode such as macrophotographing. SOLUTION: In a mode in which a dark background is photographed in a long shutter time such as a night scene mode, a fireworks mode and a slow synchro mode or in a mode in which the depth of field is shallow such as a macrophotographing mode and a close-up mode; there is possibility that the failure is caused in photographing by the camera shake and the divergence of focus in the case of following ordinary procedure. Therefore, when such a specified mode is selected, a remote control reception circuit 7 is actuated to attain a remote control input standby state and set so as not to receive the operation input of the release button of the camera. Then, the input of the release signal from a remote control transmission circuit 8 is waited for. Thus, the detection of the input of the release button on the camera side is inhibited only in the specified mode and the operation is automatically switched to remote control release.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera for photographing, and more particularly, to eliminating a failure in photographing in a specific mode such as a long-time shutter photographing and a subject photographing mode with a small depth of field, thereby enabling an intended photograph to be taken. It relates to the camera obtained.

[0002]

2. Description of the Related Art Conventional cameras have been fully automated and digitized so that photographing can be enjoyed easily, and photographing can be performed without failure simply by pressing a shutter. In recent years, a camera having a function of easily selecting a special shooting mode with a dial or a switch button has become popular.

In order to take a picture away from the camera for the purpose of special close-up photography or standby photography, a remote control device using infrared light or the like suitable for the function of each camera is prepared. When these remote control devices are used, it is common practice to fix the camera with a tripod or the like or to place the camera in an appropriate place so as not to move.

[0004]

However, in the above-mentioned conventional example, since the special photographing mode is different from general photographing, there is not a small possibility that the user mistakenly uses the camera and fails. For example, night view mode, fireworks mode, or slow sync mode,
When you want to capture the subject and background in a dark place at the same time so that the intended picture is obtained on the picture, illuminate the subject such as a person with flash light and shoot the background for a long time. In mode, it is basically to shoot with a tripod, but if you accidentally shoot while holding the camera and shake the camera during the long shutter release period to shoot the background, There is a problem that there are many failures such as erroneously determining that the photographing is completed at the time when the strobe light is emitted and turning the camera in another direction.

In close-up photography or close-up photography in macro mode or the like, the focus of the subject becomes shallow, so that in hand-held photography of the camera, there is a time difference between the time of distance measurement and the actual shutter opening. There is a problem that the camera moves and the focus is often shifted.

Accordingly, an object of the present invention is to provide a camera which is free from camera shake and the like even in a shooting mode using a long-time shutter such as a slow synchro mode or a mode where a subject having a small depth of field such as close-up shooting or close-up shooting is shot. It is an object of the present invention to provide a camera that can take a beautiful picture as well as a normal mode.

[0007]

According to a first aspect of the present invention, there is provided a camera having a remote control function and a plurality of photographing modes. In at least one of the specific modes, the camera has a specific mode photographing means for prohibiting the camera operation by operating the release button of the camera and permitting only the release signal by the remote control device.

According to this configuration, at least one or more specific modes can be released by operating the remote controller instead of operating the release button.

A specific configuration for realizing the object of the invention according to the present application is characterized in that, as described in claim 2, the specific mode is a long-time shooting mode such as slow synchro. A camera according to claim 1.

According to this configuration, the shutter can be released not by the release button but by the remote control in the long-time shooting mode such as slow synchro.

According to another specific configuration for realizing the object of the invention according to the present invention, the specific mode is defined as a macro mode or a macro mode having a shallow depth of field. 2. The camera according to claim 1, wherein:

According to this configuration, in a shooting mode such as macro shooting or close-up shooting with a shallow depth of field, the shutter can be released by operating the remote controller instead of operating the release button.

[0013] In another specific configuration for realizing the object of the invention according to the present application, the specific mode photographing means is arranged so that the selected photographing mode is selected as the specific mode. If it is determined that the release button operation of the camera is not accepted, the receiving circuit of the remote control device is set to a standby state, a release signal is received from the transmission circuit of the remote control device, and a release operation is performed,
4. The camera according to claim 1, wherein when it is determined that the specific mode is not selected, a release operation for normal photographing is performed by detecting the release button.

According to this configuration, in a normal photographing mode, a release is performed by detecting a release button operation of the camera. In a long photographing mode or a specific photographing mode such as close-up photographing with a shallow depth of field, A release by the release button of the camera is not accepted, and the release can be automatically switched to a release by the remote control to take a picture.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a control system block diagram of a camera according to an embodiment of the present invention. FIG. 2 is a flowchart of the operation of the camera shown in FIG.

In FIG. 1, 1 is a battery as a power supply, 2 is a power switch, 3 is a control circuit composed of a microcomputer, 4 is a constant voltage circuit for supplying power to the control circuit and other circuit blocks, and 5 is A switch circuit for performing a first stroke of a release button, a second stroke of a shutter release, mode selection, and the like.

6 is a film sensitivity detecting circuit for detecting the ISO sensitivity of the film, 7 is a receiving circuit of the remote control device, 8 is a transmitting circuit of the remote control device, 9 is a distance measuring circuit, 10 is a photometric circuit, and 11 is a photometric circuit. A temperature measuring circuit for detecting a temperature at the time of photographing, 12 a lens barrel driving circuit for driving the lens barrel, 13 a shutter circuit for driving a shutter, 14 a strobe device, 15 a display circuit, and Such various circuits are connected to the control circuit 3.

Next, the operation will be described with reference to the flowchart of FIG.

First, when the power switch 2 is turned on, power is supplied from the battery 1 to the control circuit 3 via the constant voltage circuit 4, and the operation of the camera is started.

Initial settings such as resetting of memory are performed (S
1).

Next, the film sensitivity detection circuit 6 detects the ISO sensitivity of the film, the switch circuit 5 detects the state of each switch, detects the photographing mode, and displays the necessary information on the display circuit 15 ( S2).

It is determined whether the mode is the specific mode based on the condition input to the switch circuit 5 (S3). If it is determined that the mode is not the specific mode in this determination, it is detected whether or not the first stroke SW1 of the release button is ON (S4). SW
If 1 is not turned on, the process returns to S2 and waits until SW1 is turned on. If SW1 is turned on, each counter is reset to perform initial setting for photographing preparation (S5).

Subsequently, a battery check circuit (not shown) for detecting whether there is a sufficient remaining battery level for photographing is activated (S6). If the remaining battery power is insufficient based on the detection data obtained by the check in S6, the process returns to S2 (S7). If the battery voltage is sufficient, the distance measuring circuit 9 is operated to detect the distance to the subject to be photographed (S8).

The luminance of the subject is detected by the photometry circuit 10, and the temperature at the time of photographing is detected by the temperature measurement circuit 11 (S9). The photometric data and film sensitivity detection circuit 6 obtained in S9
The exposure conditions are calculated based on the output of the flash device and the like, and it is determined from the result whether or not the operation of the strobe device 14 is necessary (S1).
0).

When strobe light emission is required, the strobe is charged (S11). Strobe charging is performed by sending a DC-DC oscillation / boosting start signal to the control terminal a shown in FIG. When the charging of the main capacitor (not shown) reaches the voltage capable of emitting light, a charge completion signal is input from the control terminal b. In this case, the procedure is such that the timer is operated during the charging period, and if the charging is completed during the timer period, the charging is completed and the charging completion signal is generated. It is determined whether there is a charge completion signal from S11, and if there is no charge completion signal during the timer period, the process returns to S2, and if the charge completion signal b is output, S13
Proceed to (S12).

The second stroke SW2 of the shutter button is detected (S13). If there is no input of SW2 of the second stroke and the first stroke SW1 is also released, the process returns to S2 (S14). On the other hand, if the second stroke SW2 is ON, the photographing lens is driven to the focus position based on the distance data detected by the distance measuring circuit 9 (S15).

The shutter is opened based on the output of the photometric circuit 11 and the result of the exposure calculation in S10. At the same time, when the operation of the strobe device 14 is necessary, a strobe trigger signal is transmitted through the control terminal c to control the strobe light emission, and the strobe light emission flag is set to 1 (S1).
6).

When the exposure is completed, the driven lens is reset to the initial position (S17). Subsequently, the photographed one frame is wound up, and the process ends (S18).

After confirming the flash emission flag in S16,
If "0", the process returns to S2 (S19). If "1", the control terminal a is supplied with an oscillation boosting signal to charge (S20).
When the charging completion signal is generated at the control terminal b during the charging timer period, and when the charging timer counts up, the process returns to S2 and waits for the next shutter button operation input.

Next, returning to the processing in S3, the processing in the case of the most characteristic specific mode of the present invention will be described.

A mode in which a dark background such as a night scene mode, a fireworks mode, and a slow synchro mode is shot at a long time;
Or, in a mode with a small depth of field such as a macro shooting mode or a close-up mode, there is a risk of a shooting failure in a normal procedure due to a camera shake, a focus shift, or the like, so it is determined whether or not such a specific mode is selected. If the specific mode is selected, the remote controller receiving circuit 7 is operated to set the remote controller input standby state, and the operation input of the release button of the camera is set not to be accepted (S21).

Waiting for the input of a release signal from the remote control transmission circuit 8, the flow proceeds to S5 when the remote control signal is input (S5).
22).

As in the processing of S21 and S22 described above, the detection of the release button input on the camera side is prohibited only in the specific mode, and the mode is automatically switched to the remote control release. In addition,
Since the processing after S5 is exactly the same as the above-described sequence, the duplicate description will be omitted.

As described above, according to the present embodiment, only a specific mode such as a long-time shooting mode or a macro shooting mode with a shallow depth of field, which is more likely to fail than the normal shooting mode, is used. , Automatically switch to the remote control release, eliminating shooting failures due to camera shake etc. in a specific mode, you will be able to take beautiful pictures with the same level of operation feeling as the normal shooting mode, Since it became possible to shoot in the same manner as in the normal mode without special awareness of the specific mode, the performance and operability of the camera could be further improved.

(Other Embodiments) The film used in the camera has not been particularly refused so far, but it is not limited to a camera using a conventional 35 mm film as well as a camera using a magnetically recordable IX240 film. It goes without saying that the present invention is applied.

The configuration of the remote control device shown in FIG. 1 as the receiving device 7 and the transmitting device 8 is as follows.
For example, an infrared light modulation signal from a transmitter is received through a remote control light reception window provided at a front position of a camera body, and is decoded by an internal reception circuit to perform a SW1, SW2 / ON release operation. A remote control transmitter having a light emitting diode built therein, and an infrared light from the remote control transmitter wirelessly received by a phototransistor or the like, and SW1, S
Although the description has been made assuming a standard combination with a remote control receiving circuit that decodes and decodes a W2 / ON signal or the like, the remote control device is not limited to this, and the following methods are also applicable.

The present invention is also applicable to a remote controller of a wireless controller type in which a wireless receiver and a transmitter are provided outside the camera body by a remote controller for a long distance. For example, the receiver is fixed to the shoe of the camera and is connected to the remote control socket of the camera via a cord, which is often used for photographing wild animals and fixed point observation. The output range of the wireless transmitter is 100 m. In the case of a large remote controller, the release operation of SW1 and SW2 / ON is basically the object to be controlled. Exactly the same control is possible.

[0038]

As described above, according to the present invention, the operation of the release button of the camera is performed in a long-time shooting mode such as slow synchro and a specific mode such as macro shooting with a shallow depth of field. It is configured to prohibit and prevent the camera operation by the camera and allow only the release signal of the remote control device, so even in a specific mode such as a long mode shutter shooting mode or macro shooting with a shallow depth of field As a result, it is possible to take a beautiful picture in the same manner as in the normal mode without any failure due to camera shake or the like.

[Brief description of the drawings]

FIG. 1 is a control system block diagram of a camera according to an embodiment of the present invention.

FIG. 2 is a flowchart of an operation of the camera shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Battery 2 Power switch 3 Control circuit 4 Constant voltage circuit 5 Switch circuit 6 Film sensitivity detection circuit 7 Remote control reception circuit 8 Remote control transmission circuit 9 Distance measurement circuit 10 Photometry circuit 11 Temperature measurement circuit 12 Lens barrel drive circuit 13 Shutter circuit 14 Strobe device 15 Display circuit

Claims (4)

[Claims] 1. A camera having a remote control function and having a plurality of shooting modes, wherein in at least one specific mode among the plurality of shooting modes, a camera operation by actuation of a release button of the camera is prohibited and remote control is performed. A camera comprising a specific mode photographing means for permitting only a release signal from the device. 2. The camera according to claim 1, wherein the specific mode is a long-time shooting mode such as slow synchro. 3. The camera according to claim 1, wherein the specific mode is a photography mode such as macro photography or close-up photography with a small depth of field. 4. The specific mode photographing means waits for a receiving circuit of a remote control device without accepting a release button operation of a camera when determining that the selected photographing mode is selected as the specific mode. Performing a release operation by receiving a release signal from a transmission circuit of the remote control device in a state, and performing a release operation of normal shooting by detecting the release button when it is determined that the specific mode is not selected. Claim 1
4. The camera according to any one of 1 to 3.