JPH01315724A - Setting device for photographic information of camera - Google Patents

Abstract

PURPOSE:To facilitate operability by employing a first operation member operated manually for specifying an exposure correction value setting mode and a second operation member manually operated for specifying a film sensitivity setting mode. CONSTITUTION:A metering circuit 42 A/D-converts a metering output based on the luminance of an object and then outputs it to an arithmetic circuit 43. The arithmetic circuit 43 uses, as input, setting outputs from counters 22, 31, 32, 33, and 34 and also metering output from the metering circuit 42, and then outputs, to a display switching circuit 44 and exposure control circuit 46, exposure information on shutter speed and diaphragm value based on a set exposure mode. For the frame number of a film, the value displayed at that time is kept at a counter 21 by pressing a film sensitivity setting key 2, and also this provides the film sensitivity setting mode where a photographer can recognize film sensitivity. In this device, information with a high frequency of alteration is inputted by operating just one operation member, thus the operability can be greatly facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for setting various photographic information in a camera, and more particularly to a photographing information setting device using a manual key system in which IFT information is set by key operation.

The key human-powered photographing information setting device has been well known and famous. With these, many input keys are gathered in one place and exposed to the outside, making careless operation possible.

An incorrect setting may have occurred due to misuse, etc. Therefore,
In order to prevent incorrect settings, for example,
The setting device disclosed in No. 39 allows setting of shooting information,
This can be done by simultaneously operating both the setting key and the safety button.

Furthermore, Japanese Patent Laid-Open No. 561-74231 discloses an information setting device in which either shutter speed or film sensitivity is to be set using a switch button and the data can be changed using a common up key or down key. Disclosed. However, with these setting devices, the safety button cannot be used whether you are changing data that changes infrequently, such as the number of films or film speed, or data that changes frequently, such as shutter speed or aperture value. In addition to operating the switching button, it was also necessary to operate the setting key, which was not desirable in terms of operability, especially when changing data that is frequently changed.

The present invention eliminates the complexity of key operations when manually setting or changing shooting information in a camera.
Moreover, it is an object of the present invention to provide a photographing information setting device for a camera that prevents careless and erroneous input operations. In other words, always requiring two types of button operations for one input operation is effective in preventing erroneous operations, but on the other hand, it is extremely unsatisfactory in terms of ease of operation. The present invention seeks to answer both of these needs.

The present invention allows shooting information settings to be set for each shot, such as the shutter speed and fringe value, etc., and when -degrees are set, shooting continues for a while based on the setting information. Settings such as film sensitivity, which are not often operated, and the former setting operations, which are frequently changed, require a single key operation, while only the latter setting operations, which are less frequently changed, require two types of key operations.

FIG. 1.2 is a perspective view of a camera equipped with an embodiment of the photographing information setting device of the present invention. On the outside of the camera body B of this camera, there is a film information group in which information related to the film is set! and an information@1 setting section consisting of two groups, an exposure information group H in which information related to exposure is set, and a display device W [I and In the film information group I, in this embodiment, the film sensitivity and the number of shootable frames (film length) are prepared as setting information.However, the information to be set in this -IT is in the upper part. Other possible information includes the film reflectance for film reflection metering cameras, and the latitude depending on the type of film regardless of the metering method.Exposure information group ■ As an exposure control mode, there are alternative exposure control modes such as shutter speed priority (TV-P), aperture priority (AV-P), and program P that controls shutter speed and fringing in a predetermined combination. There is a mode selection means to select, and an exposure compensation means (+/-
) has been prepared. In addition, as information related to exposure,
In addition to the above, there is information regarding cooperation with a strobe device and an automatic focusing device, but this information is omitted in this embodiment.

As shown in Figure 1, the film information and information group ■ includes the number of shooting frames setting selection key 1 labeled "F", the film sensitivity setting selection key 2 labeled "ASA", the number of shooting frames and the number of shooting frames. An "UP" key 3 and a "DN" key are provided as keys for changing sensitivity. Film information group I includes a protective cover 5 that can be rotated in the front and back direction of the camera body B.
The structure is such that incorrect settings due to careless contact can be avoided.

In the exposure information group ■, there is an override setting selection key 11 labeled "-t/-". v & shadow mode setting key 12.
An "UP" key 13 and a "DN" key 14 are provided as keys for changing override values and selected photographing modes. Similarly to the protective cover 5 of the film information group I, the exposure information (2) is also configured to avoid incorrect settings by a rotatable protective cover 15.

FIG. 3 shows a cross section of an input key group in which the input key 11' is used as an information setting section in the first embodiment of the present invention. Said first,
Film information group I and exposure information group ■ in Figure 2 both have the same configuration, and are
Conductive rubber 6 serving as a conductive contact is disposed at the bottom of each of 14 to 14 in correspondence with the circuit pattern of the substrate 7.

4 and 5 show cross sections of an information setting section according to a second embodiment of the present invention. In this embodiment, shooting information is divided into a group of frequently used information such as exposure information, and a group of less frequently used information such as film information, which is set only when loading the film. The configuration is such that setting operations are performed according to the settings. In the above embodiment, 21 rt,
In this embodiment, one group of input keys is used as a key for inputting two types of information groups by switching a switch. That is, as shown in FIG. 4a, a setting display board 56 is provided below the protective cover 55, and the input keys 51 to 54 pass through the setting display board 56 and are exposed on the upper surface of the display board. Each of these keys 51~
54 is configured to be operable even when only the protective cover 55 is opened or when the setting display board 56 is also opened. A changeover switch member 57 is disposed below the display board 56, whose contacts are opened and closed in conjunction with the opening of the setting display board 56 to switch the input of one of the information groups.

In the drawings, FIG. 4A and FIG. 5A respectively show a cross section and a plane with only the protective cover 55 opened. Further, FIG. 4C2 and FIG. 5S respectively show a cross section and a plan view of a state in which the protective cover 55 and the setting display plate 56 are both opened.

In the former case, the exposure information group can be set, and on the surface of the setting display board 56, marks "M" for selecting the shooting mode are placed around the input keys 51 and 52.
ODE", mark for override setting "+/-1'
is printed. In the latter case, a film information group can be set, and on the surface of the key press member 60 below the setting display board 56, film sensitivity settings are provided around each key corresponding to the input keys 51 and 52. Mark “ABA” for
", and a mark "FILM" for setting the number of frames to be photographed. Furthermore, the "UP" key 53 and the "DN" key 54 have marks "UP" and "FILM" on their surfaces, as in FIG.
” and “DOWN” are printed.

FIG. 6 is a block diagram showing the circuit configuration of a photographing information setting device suitable for the first embodiment. Film information group I is
It has the input keys 1 to 4 described above, and is also provided with a counter 21 for setting the number of film frames and a counter 22 for setting film sensitivity. Here, the film frame number setting counter 21 is initially set to "24" by the back cover close signal outputted from the back cover open/close signal generator 41, and when specified by the input key 1, the film frame number setting counter 21 is The set value is added or subtracted according to the signal given from 3 or 4,
The count value is reset by the back cover opening signal. The film sensitivity setting counter 22 is initially set to a film sensitivity value of ``100'', which is a typical film sensitivity value, and is set according to the signal given from the input operation key 3 or 4 when specified by the input key 2. The value changes to 1/3Ev. Exposure 1☆report group ■ has the above-mentioned input keys 11 to 14, including an override setting counter 31° and an exposure mode setting counter 32. A counter 33 for setting a shutter speed and a counter 34 for setting an aperture value are attached. The override setting counter 31 is
The value "0" is initially set, and when specified by the large key 11, the set value is added or subtracted by, for example, 0.5 in accordance with the signal given from the input key 13 or 14. The exposure mode setting counter 32 has program P, shutter speed priority (TV-P), aperture priority (AV
-P)'s 3f11! It is composed of a ring counter having three outputs corresponding to the exposure modes, and the P mode is initially set, and each time the input key 12 is pressed, the exposure mode is changed and set in the above order. The shutter speed setting counter 33 is initially set to 1/125 seconds, for example, and is set according to the signal given from the input key 13 or 14 when the shutter speed priority mode is designated by the input key 12. The value changes every IEv. The aperture value setting counter 34 is initially set to F5.6, for example, and changes its set value according to the signal given from the input key 13 or 14 when the aperture value priority mode is designated by the input key 12. changes every lEv. .

The photometry circuit 42 converts photometry output according to the subject brightness into Δ/D.
It is converted and output to the arithmetic circuit 43. The arithmetic circuit 43 inputs the setting outputs from the counters 22.31, 32.33.34 and the photometry output from the photometry circuit 42, and switches the display of exposure information of shutter speed and aperture value according to the set exposure mode. Output to circuit 44 and exposure control circuit 46. The display switching circuit 44 has counters 21 and 22.
．． The setting information from 31, 32, 33, and 34 and the exposure information from the arithmetic circuit 43 are input,
Based on the contents designated by 1 and 12, the various types of photographic information described above are switched and selected. Protective cover opening/closing signal generation circuit 4
5 gives a display switching signal to the display switching circuit 44 according to the opening/closing of the protective cover 5.15.55, and displays the above exposure information when the protective cover is closed, and displays the above setting information when the protective cover is opened. The display switching circuit 44 is controlled to select. The display device (2) is composed of a display decoder, a driver, and a visible display element such as a liquid crystal or a light emitting diode, and displays exposure information selected by the display switching circuit 44. The exposure control circuit 46 performs a predetermined exposure control operation according to the exposure information from the arithmetic circuit 43 and the selected exposure mode, and controls the shutter and fringing using known electromagnetic means or the like.

FIG. 7 is an explanatory diagram showing the display contents of the display device (2), and the detailed operation of the present invention will be explained below based on the display contents. First, in the first embodiment shown in FIGS. 1 and 2, when the protective cover 5 is opened, a first input key group serving as an information setting section for film information group I appears. In conjunction with this, as shown in Figure 7a, the mark "FILM" indicating the number of film frames and the mark "ASA" indicating the film sensitivity are displayed on the display device (2), and as an initial value, "FILM" is displayed. “24” is below “ASA”.
'100' is displayed below '. Press the film frame number setting key 1 to select the film frame number setting mode, and then press the up key "UP" 3. The display of the film frame number changes to 36". Alternatively, press the down key "DN" 4. When you press , the film frame number display will decrease to "20", then "12", etc., so when the number corresponding to the number of film frames loaded appears, release the up key or down key. The setting of the number of film frames is completed.Next, when the film sensitivity setting key 2 is pressed, the display value at that time of the number of film frames explained above is held in the counter 21, and the film sensitivity is set to a value that can be certified. Enters setting mode.

The film sensitivity setting is the same as the number of film frames, with the initial value "1".
Press up key "UP" 3 or down key "DN" 4 for "00" and release the up key or down key when the numerical value indicating the sensitivity of the film being used appears. These settings are made. When the setting is completed, close the protective cover 5. At the same time, the film sensitivity is held at the displayed value in the counter 22. When the protective cover 5 is opened, the film sensitivity and number of film frames held in the setting always have priority on the display device ■. (Figure 7a).

Further, when the protective cover 5 is closed, the display on the display device (2) is automatically changed by the display mode selection circuit 45, and the display content is switched to exposure information.

When the protective cover 5 is closed, the exposure 1☆ information of shutter speed and aperture value is automatically set to the initial state, and
Program exposure control mode is selected. If the protective cover 15 of the exposure information nT■ is opened at this time, the settings (
In the selected exposure control mode, that is, when no separate exposure information setting operation is performed, the initial state is automatically set as described above, and only the program exposure control mode display "P" mark is displayed on the display device (7). Figure b). If you start shooting in the program exposure control mode, if you close the protective cover 15 without operating the keys 11 to 14 of the exposure information group H, the program exposure mode will change as shown in Figure 7C. The automatically controlled shutter speed and aperture value are displayed on the display device (2) according to the subject brightness. When trying to change the exposure control mode, remove the protective cover 1.
5, the exposure information group (2) can be set, and the photographing mode setting selection key 12 is operated. When you press this key 12, the display value fill will change to program P, shutter speed priority (
TV-P) and aperture priority (AV-P), and with shutter speed priority, for example, 1/125 seconds (1/125 seconds on display).
25) and f5.6 in aperture priority (5.6 on display)
) is displayed as the initial value in each mode on the display body (3) at the same time as the mode is selected. Then, when the desired exposure mode appears, the key 12 is released. Furthermore, if the photographer wants to change the priority setting value from the initial value automatically set by the above operation, the desired priority setting value can be set by pressing the input key "UP" 13 or "DN" 14. be. For example, the 7th d
In the figure, the set shutter speed is 1/250 seconds with shutter speed priority (TV-P). While the protective cover 15 is opened, only the set values are displayed. Therefore, only the prioritized numerical value can be visually recognized together with the exposure mode, which is advantageous because there is less risk of setting it incorrectly. When the protective cover 15 is closed, the prioritized numerical value and the automatic control value calculated according to the film sensitivity and subject brightness are also displayed on the display device (2). FIG. 7e shows the above situation, and shows the override set to +2° OEM. To set the override, open the protective cover 15,
When the override key 11 is pressed, the initial value "0.0" is displayed, and the input key 13 is pressed according to the desired override amount.
or 14, respectively, for example +0.
5. ..., +2.0 or -0.5. ....

-2,0 can be set. This override amount can be canceled, ie, returned to the initial value, by operating the input key 11 again.

By separating the shooting information according to the type of shooting information, such as film information and exposure information, as described above,
It is possible to realize a photographing information setting device that is free from erroneous operations and has good operability.

In the above explanation, the counter 21 was configured to count and store only the set value from the film information group ■, and only the set number of film frames was displayed from the display device ■. The device 41 is configured so that not only a back cover opening/closing signal but also a pulse signal is outputted for winding one frame of film via a known film counting mechanism.
Furthermore, if the counter 21 is configured to subtract the set value in response to this pulse signal, it is possible to display the number of remaining frames of film that can be photographed.

In addition, as in the second embodiment, when inputting a plurality of information groups using a single input key group, the configuration of the protective cover opening/closing signal generation circuit is further changed to the setting device display panel 56.
It is only necessary to generate a signal corresponding to the opening/closing of the input keys, and to switch signal transmission from a single input key group to the counters 21, 22 or 31 to 34 in accordance with this signal. The operation of the shooting information setting device in this case is almost the same as described above, and a detailed explanation will be omitted, but briefly, when the protective cover 55 is opened, frequently used exposure information is set, and further settings are made. Only when the device display board 56 is also opened, it is possible to set film information that is used infrequently.

In this way, the classification of photographic information is performed depending on the type of photographic information as in the first embodiment, and in accordance with the frequency of use through photographing operations as in the second embodiment.
Although the shooting information can be set for each method, the present invention is not limited to the method described above. You may also do so.

FIG. 8 is a sectional view showing an example of application of the present invention to an information shooting setting device, in which a solar cell is attached to the surface of a protective cover,
This makes effective use of the protective cover. This solar cell S is used as a battery for charging a small battery such as a nickel cadmium battery or a silver oxide battery as a power source for a camera (not shown).

Further, the arrangement of the plurality of input keys nT is not limited to a two-dimensional arrangement as in the first embodiment, but may be arranged three-dimensionally in the vertical direction.

As described above, according to the present invention, photographing information is divided into those that change frequently and those that change less frequently, and information that changes frequently can be input by operating a single operating member, making the input operation simple and quick. Since only the information that can be changed and changes infrequently requires the operation of the two operation members, the operation is significantly simpler than when all information input is performed by operating the two operation members. Once information is set that does not change frequently, it will be photographed multiple times.
Normally, verification is not performed every time a photo is taken, and there is a big loss if the settings are changed inadvertently, but since inputting such information requires the operation of two operating members, there is a risk of incorrect input. Sufficient safety can be obtained from the standpoint of loss prevention.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one embodiment of the present invention with the protective cover of one of the input key groups opened, and FIG. 2 is a perspective view of the same embodiment with the protective cover of another input key group opened. , FIG. 3 is a cross-sectional side view of an input key group in one embodiment of the present invention, and FIG. 4 is a cross-sectional side view of an input key group in another embodiment of the present invention. state, same figure 0
5 shows a state in which the protective cover is opened, FIG. 5 shows a state in which the setting display board is opened, and FIG. 6 is a block diagram of the circuit configuration in one embodiment of the present invention, FIG. 7 is a diagram illustrating the display pattern of the display means in one embodiment of the present invention, and FIG. 8 shows the setting display board when opened.
The figure is a cross-sectional side view of another embodiment of the present invention. Agent Hiroshi Agata (Patent Attorney)

Claims (1)

[Claims] A first operating member that is manually operated to specify an exposure compensation value setting mode, a second operating member that is manually operated to specify a film sensitivity setting mode, and a third operating member that is manually operated to change data. a first setting means for setting an exposure compensation value in response to manual operations on the first and third operating members; and a film sensitivity value in response to manual operations on the second and third operating members. a second setting means for setting the shutter speed or aperture value in response to manual operation only on the third operating member; A camera information setting device comprising a display means for displaying data.