JPS6237773B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an information display device in a viewfinder of a camera, and more particularly to an information display device that simultaneously displays a plurality of different pieces of information in the viewfinder of a camera.

An information display device that simultaneously displays different information such as a spot photometric value and an average photometric value in the viewfinder of a camera is already known (Japanese Patent Application Laid-Open No.
(See Publication No. 55-35316). However, in the case of this device, the number of pieces of information that can be displayed simultaneously is two, and the information is only limited to spot photometric values and average photometric values.

However, there is a strong demand for displaying a large amount of information simultaneously in the viewfinder of a camera, and in particular,
In cameras with multi-point spot memory metering, which can sequentially perform light metering at multiple points on the shooting screen and control exposure based on the average value of these metered values, the metering method for each metering point is It is desirable to display the value, photometric maximum value, minimum value, etc. in the finder, and the above request was extremely strong.

SUMMARY OF THE INVENTION In view of the above-mentioned points, an object of the present invention is to provide an information display device in a viewfinder of a camera, in which a plurality of display body rows are arranged in correspondence with index rows, and a plurality of different pieces of information can be displayed simultaneously. .

According to the present invention, a large amount of information is simultaneously displayed in the viewfinder by simultaneously and selectively driving a plurality of display bodies, so the photographer can easily read a large amount of information at the same time, and can be used when taking pictures.

In particular, if the in-viewfinder information display device of the present invention is installed in a multi-point spot memory metering type camera,
Spot photometric values at multiple points, their calculated values, spot photometric maximum values, minimum values, etc. can be displayed simultaneously in an easy-to-read manner. In addition, by using the flashing display method, you can easily check the new input value and its input even if you input the same value as the value already displayed, such as maximum photometry value, minimum photometry value, calculated value, etc. can do. moreover,
With a simple switching operation, you can easily switch between the shutter second display during automatic shooting and the fixed point matching type exposure display during manual shooting.

Hereinafter, the present invention will be explained based on an illustrated embodiment.

FIG. 1 shows an example of the optical system of a multi-point spot storage metering camera equipped with the in-viewfinder information display device of the present invention. In this optical system, the light L that has passed through the photographic lens 1 and entered the camera is transmitted to the finder optical system by a movable reflection mirror 2 and a half mirror section (not shown) provided approximately at the center thereof. Observation light L ₁ directed toward , and spot photometry light L ₂ directed toward photoelectric conversion element 3 for photometry.
It can be divided into The light L ₂ for spot photometry is transmitted through a sub-mirror 4 installed behind the movable reflection mirror 2.
The light is incident on the photoelectric conversion element 3, and is used for photometry at the appropriate time, as will be described later. Also, observation light
L ₁ forms a subject image on a focusing glass 5, and this image is observed through a pentagonal Datzha prism 6 and a finder eyepiece 7.

FIG. 2 shows an information display device in a viewfinder according to an embodiment of the present invention, which is installed in a multi-point spot storage metering type camera having an optical system as described above. This display device 11 includes first and second display arrays 1 in which display elements 13 are vertically arranged on a transparent liquid crystal display plate 12 having a vertically long rectangular shape.
4 and 15 are arranged side by side. and,
Display board 12 corresponding to the display arrays 14 and 15
On the right edge of the screen, there is an index row 16 for indicating the shutter speed during automatic shooting, and an index 1 for fixed point matching for indicating the appropriate exposure range during manual shooting.
7 are provided respectively.

The above-mentioned index row 16 sequentially changes the indexes "1000" to "1" indicating the shutter speed from the index "OVER" indicating that the shutter speed is outside the high-speed limit to the index "LT" indicating long exposure. Each indicator is arranged so as to correspond to at least one of the display bodies 13 of the display body rows 14 and 15. In addition, the index 17 for fixed point matching is set so as not to overlap the index row 16.
Two triangular shapes are formed in the middle of the display panel 12, immediately to the right of the display rows 14 and 15, with their vertices facing each other with a distance between them. The index row 16 is driven and becomes visible when the camera switches to automatic shooting (see Figure 3), and the index 17 is activated when the camera switches to manual shooting. It is designed to be driven and manifested in conjunction with this (see Figure 4). Therefore, either the index row 16 or the index 17 is selectively exposed on the display board 12.

As shown in FIGS. 3 and 4, the information display device 11 configured as described above is disposed within the viewfinder of the camera so as to be exposed at the left edge of the viewfinder image frame 18. In FIGS. 3 and 4, reference numeral 19 indicates a spot photometry index which also serves as a focus adjustment index of the double image matching type.
The photoelectric conversion element 3 is arranged so as to optically correspond to this index 19.

FIG. 5 shows an example of a photometric calculation display circuit for driving and controlling the information display device 11. As shown in FIG.
This photometric calculation display circuit includes a logarithmic compression circuit 21 to which the photoelectric conversion element 3 for photometry is connected, an A-D conversion circuit 22 that converts the analog output of this logarithmic compression circuit 21 into a digital quantity, and this A-D conversion circuit 22. A latch circuit 23 that holds the output of the conversion circuit 22, an input value storage circuit 24 that stores the value held by the latch circuit 23, and an operation in which the input values stored in the storage circuit 24 are respectively input. circuit 25,
Maximum value comparison circuit 26 and minimum value comparison circuit 27
, a calculated value storage circuit 28 , a maximum value storage circuit 29 and a minimum value storage circuit 30 that store the outputs of these circuits 25 , 26 and 27 , respectively; and these storage circuits 28 , 29 , 30 and the input value storage circuit 2
a decoder 31 which decodes the stored value of No. 4 and supplies it as a drive output to the display device 11; and a pointer output conversion circuit 34 for obtaining a pointer output that causes the display device 11 to function as a fixed point matching type exposure meter during manual shooting. It consists of its main parts.

The logarithmic compression circuit 21 includes the photoelectric conversion element 3
In addition, the film sensitivity value Sv and the aperture value Av are inputted, and the subject brightness information obtained corresponding to the photoelectric conversion output of the photoelectric conversion element 3 is inputted to the film sensitivity value Sv. and the aperture value Av, logarithmic compression conversion is performed to a time value Tv, and the result is output. The A/D conversion circuit 22 converts the analog time Tv output from the logarithmic compression circuit 21 into a digital value.

The latch circuit 23 is connected to the control pulse generating circuit 3.
2, and this control pulse generation circuit 3
2 is connected to a photometry command switch _SW1 for externally instructing the latch timing. When the switch SW ₁ is closed, a photometry command pulse is generated in the circuit 32, this pulse is input to the latch circuit 23, and the time value Tv at the time of input is held in the circuit 23. The control pulse generation circuit 32 is designed to continuously generate photometry command pulses at short intervals during manual shooting, and periodically update the contents held in the latch circuit 23. .

Further, the control pulse generation circuit 32 is configured to generate a calculation command pulse of a certain time width with a slight delay after the generation of the photometry command pulse, and this calculation command pulse is transmitted to the calculation circuit 25 and the maximum value comparison. The signal is applied to the circuit 26, the minimum value comparison circuit 27, and the decoder 31, respectively.
Note that this calculation command pulse is not generated when the camera is in the manual shooting state.

The input value storage circuit 24 includes the latch circuit 2
In addition to inputting the time value Tv from 3, it is also connected to a clear pulse generation circuit 33, and the clear pulse generation circuit 33 is connected to a memory release switch SW ₂ for clearing the memory contents. ing. When the switch SW ₂ is closed, a clear pulse is generated in the clear pulse generating circuit 33, and this pulse clears the stored contents of the input value storage circuit 24. The output terminal of the clear pulse generation circuit 33 is connected not only to the input value storage circuit 24 but also to the calculated value storage circuit 28, the maximum value storage circuit 29, and the minimum value storage circuit 30, and is connected to the input value storage circuit 24 as well as the calculation value storage circuit 28, the maximum value storage circuit 29, and the minimum value storage circuit 30. Sometimes, the memory contents of the input value storage circuit 24 are cleared and the circuits 28, 29 and 30 are cleared at the same time.
The memory contents are also reset to the initial values.

The output end of the input value storage circuit 24 is connected to the movable contact terminal of the manual/auto changeover interlock switch _SW3 . This switch SW ₃ is designed to interlock with other manual/auto changeover interlocking switches SW ₄ and SW ₅ , and these switches
SW ₃ , SW ₄ and SW ₅ have a manual side fixed terminal M and an automatic side fixed terminal A, respectively. The auto side fixing terminal A of the switch SW ₃ is connected to the other input terminal of the arithmetic circuit 25, the maximum value comparison circuit 26 and the minimum value comparison circuit 27, and the input terminal of the decoder 31, and is connected to the manual side fixing terminal A of the switch SW 3. Terminal M is connected to the other input terminal of the pointer output conversion circuit 34. Also,
The movable contact terminal of the switch SW ₄ is configured to apply a time value Tv ₀ set on a shutter speed dial (not shown).
The auto side fixed terminal A of this switch SW ₄ is a loose terminal, and the manual side fixed terminal M is
It is connected to one input end of the pointer output conversion circuit 34. Furthermore, the movable contact terminal of the switch SW ₅ is connected to the input end of the time forming circuit 35, and the output end of the calculated value storage circuit 28 is connected to the auto-gover fixed terminal A. A time value Tv ₀ set on the shutter speed dial is applied to the arm fixed terminal M.

The above-mentioned pointer output conversion circuit 34 compares the time value Tv as a photometry result inputted from the input value storage circuit 24 and the time value Tv ₀ set on the shutter speed dial during manual shooting, and compares both values. It serves to convert the difference between the two into a pointer output and output it to the decoder 31. Further, the time forming circuit 35 logarithmically expands the input time value and supplies an output to the magnet control circuit 36 from the time when the shutter starts operating until the logarithmically expanded time has elapsed. It serves to delay the operation. In other words, it plays the role of creating shutter speed.

The arithmetic circuit 25 has one input end connected to the output end of the arithmetic value storage circuit 28, and the other input end connected to the output end of the input value storage circuit 24 through the switch _SW3 , and both memory circuits 24,
It serves to calculate an average time value as a result of multi-point spot memory photometry that is newer than the stored contents of 28. Note that not only the average time value but also the number of photometry times are inputted from the calculation value storage circuit 28 at the same time, and the calculation circuit 25 calculates a new average time value and increases the number of photometry times by 1.
The average time value is also stored in the calculated value storage circuit 28. The calculation operation of this calculation circuit 25 is performed by the control pulse generation circuit 3.
This is performed while the calculation command pulse is input from 2 onwards.

The maximum value comparison circuit 26 has one input terminal connected to the output terminal of the maximum value storage circuit 29, and the other input terminal connected to the output terminal of the input value storage circuit 24 through the switch SW ₃ . circuit 2
4 and 29 are compared, and the larger value is outputted as a new maximum value Tvmax and stored in the maximum value storage circuit 29. This comparison operation of the maximum value comparison circuit 26 is performed while the calculation command pulse is being input from the control pulse generation circuit 32.

The minimum value comparison circuit 27 has one input terminal connected to the output terminal of the minimum value storage circuit 30 and the other input terminal connected to the output terminal of the input value storage circuit 24 through the switch SW ₃ . circuit 2
It serves to compare the stored contents of 4 and 30 and output the smaller value as a new minimum value Tvmin and store it in the minimum value storage circuit 30. This comparison operation of the minimum value comparison circuit 27 is performed while the calculation command pulse is input from the control pulse generation circuit 32.

As described above, the finder information display device of the present invention and the photometric calculation display circuit for driving and controlling the same are configured.

Next, the operation of this in-finder information display device will be explained together with the operation of the photometric calculation display circuit.

Manual/auto switching interlock switch SW ₃ ~
To switch the movable contact of SW ₅ to the fixed terminal A, set the camera to automatic shooting mode, and perform multi-point spot memory metering control photography, first set the desired spot metering index 19 in the viewfinder image frame 18. Match one photometering point and turn the photometering command switch.
Close SW ₁ . Then, a photometry command pulse is input from the control pulse generation circuit 32 to the latch circuit 23, and the latch circuit 23 latches the time value Tv of the digital quantity output from the A/D conversion circuit 22. Since the photoelectric conversion element 3 for photometry is arranged to optically correspond to the index 19, this time value Tv corresponds to the luminance of the photometry point, and this value Tv is the input value. The value is stored in the value storage circuit 24.

Next, a calculation command pulse is output from the control pulse generation circuit 32 with a slight delay after the photometry command pulse, and the same pulse is sent to the calculation circuit 25 and the maximum value comparison circuit 2.
6, input to the minimum value comparison circuit 27 and decoder 31, respectively.

Now, as a result of the photometry that has already been carried out multiple times, the average time value = 7 corresponding to the shutter speed of 1/125 seconds is stored in the calculated value storage circuit 28, and the maximum value storage circuit 2
9 is the time value corresponding to a shutter speed of 1/250 seconds
Tvmax=8 is stored in the minimum value storage circuit 30, and time value Tvmin=6 corresponding to the shutter speed 1/60 second is stored in the minimum value storage circuit 30.
Assume that the respective data have already been stored and a display as shown in FIG. 6A is displayed on the display device 11 through the decoder 31. From this state, when a calculation command pulse is input to the decoder 31, the decoder 31 calculates the current photometric time value Tv stored in the input value storage circuit 24, for example, Tv= 2 (shutter speed 1/4
The display elements 13 of the first display element row 14 corresponding to the seconds (corresponding to seconds) are flashed for a certain period of time.

On the other hand, upon receiving the calculation command pulse, the calculation circuit 25 calculates from the storage content of the calculation value storage circuit 28=7 and the storage content of the input value storage circuit 24 Tv=2.
A new average time value=7×2+2/2+1≈5.3 (however, the number of photometry that has already been performed is set to 2) is calculated and stored in the calculated value storage circuit 28. Further, when the maximum value comparison circuit 26 receives the calculation command pulse, the storage content Tvmax of the maximum value storage circuit 29 is 8.
is compared with the storage content Tv=2 of the input value storage circuit 24, and a new maximum value Tvmax=8 is stored in the maximum value storage circuit 29. Furthermore, the minimum value comparison circuit 2
7 receives the calculation command pulse, compares the storage content Tvmin=6 of the minimum value storage circuit 30 and the storage content Tv=2 of the input value storage circuit 24, and stores the new minimum value Tvmin=2 in the minimum value storage circuit. 30 to be memorized.

The new average time value, minimum value Tvmax, and minimum value Tvmin are stored in each of the storage circuits 28, 29, and 30 by blinking the storage contents of the input value storage circuit 24 in synchronization with the end of input of the calculation command pulse. This is done all at once when the display ends, and when this memorization operation is completed, the display device 1
1 changes as shown in FIG. 6C. That is, the average time value ≒ 5.3 (shutter speed
Display body 13 of the first and second display body rows 14 and 15 corresponding to 1/30 to 1/60 seconds), maximum value
Display element 13 of first display array 14 corresponding to Tvmax=8 (corresponding to shutter speed 1/250 second)
is, and the minimum value Tvmin=2 (shutter speed
first display column 1 corresponding to 1/4 second)
The four display bodies 13 are each driven to display the shutter speed.

Therefore, if you perform photometry at multiple desired points, the average shutter speed will be clearly displayed in the viewfinder using two displays, and the maximum and minimum shutter speeds will be clearly displayed using one display. Since they are displayed simultaneously in a distinguishable manner, the photographer can clearly read the variation in subject brightness within the photographic image frame and the shutter speed at which the shutter actually operates. Therefore, the read information can be used as information when performing backlight correction, high-key photography, low-key photography, etc. according to the photographer's drawing intention.

When the shutter release button (not shown) is pressed while the average shutter speed, maximum shutter speed, and minimum shutter speed are displayed, the time forming circuit changes the time according to the average time value stored in the calculated value storage circuit 28. 35 creates the shutter operating time, so the shutter is operated at the average shutter speed of multi-point spot metering,
A photo shoot will be taken.

The input value storage circuit 24 and the calculated value storage circuit 2
8. Maximum value storage circuit 29 and minimum value storage circuit 3
To reset the memory contents of each circuit of 0, it is sufficient to close the memory release switch _SW2 . In this way, a clear pulse is outputted from the clear pulse generating circuit 33 to each circuit 24, 28, 29, and 30, and the stored contents of each circuit 24, 28, 29, and 30 are reset to the initial value. Note that the initial values reset to the input value storage circuit 24 and the calculation value storage circuit 28 are zero, and the calculation value storage circuit 28
When the number of photometric measurements stored together with the average time value is zero, the average shutter speed is not displayed on the display device. Further, the maximum value storage circuit 28 is configured to be reset to a negative value as an initial value, and the circuit 28
When a negative value is stored in display device 1,
1, the maximum shutter speed is not displayed. Furthermore, the maximum value that can be stored in the minimum value storage circuit 30 is reset as an initial value, and when the circuit 30 stores this value, the minimum value is not displayed on the display device 11. ing. That is, each circuit 24, 28, 2
When 9 and 30 are reset to the initial state by the clear pulse, no display is made on the display device 11.

On the other hand, the manual/auto switching interlock switch
Switch the movable contacts of SW ₃ to _{SW 5} to fixed terminal M,
When performing normal manual photography with the camera in the manual photography mode, the camera is aimed at a desired subject and the composition is determined. Then, reflected light from the part of the subject corresponding to the spot photometry index 19 is incident on the photoelectric conversion element 3, and a photoelectric conversion output corresponding to the luminance of the same part is generated in the element 3.
This photoelectric conversion output is converted into a time value by the logarithmic compression circuit 21.
Logarithmically compressed into Tv, control pulse generation circuit 3
The data is sequentially updated and held in the latch circuit 23 in synchronization with the photometry command pulses intermittently supplied from 2. Then, this held time value Tv is temporarily stored in the input value storage circuit 24, and the time value Tv is temporarily stored in the input value storage circuit _24.
The signal is input to the pointer output conversion circuit 34 through. The time value Tv input to the pointer output conversion circuit 34 is
It is compared with the time value Tv ₀ set externally by the shutter speed dial, which is also input to the same circuit 34, and a pointer output corresponding to the difference between the two is input to the decoder 31. The decoder 31 drives the display elements 13 of the corresponding first and second display element arrays 14 and 15 in the display device 11 in accordance with this pointer output, and as shown in FIG. Display as a pointer on the meter. That is, when the photometered time value Tv and the externally set time value Tv ₀ almost match, the exposure state is appropriate, and the display body 13 corresponding to the center of the fixed point matching index 17 is driven. In addition, if the photometered time value Tv is smaller than the externally set time value Tv ₀ , overexposure will occur, so it corresponds to the "+" side of the fixed point matching index 17 or outside the upper range. If the display unit 13 is driven and the photometered time value Tv is larger than the externally set time value Tv ₀ , underexposure will occur, so the indicator 17 for fixed point matching should be placed on the "-" side or below. The display body 13 corresponding to the area outside the lower range is driven.

Note that in this manual shooting state, the index row 16 for displaying the shutter speed is displayed on the display device 11.
Since it does not appear above, it is easy to see as a fixed-point exposure meter, and there is no danger of mistaking the pointer display for the shutter speed display.

In the above manual shooting state, when the shutter release button is pressed, switch SW ₅ switches to fixed terminal M, so the shutter starts at the externally set shutter speed (time value Tv) using the shutter speed dial. (corresponding to ₀ ) to take a photo.

FIG. 7 shows another example of a photometric calculation display circuit for driving and controlling the in-finder information display device 11 of the present invention. This photometric calculation display circuit is
Like the circuit shown in FIG. This is a circuit for displaying on 11. That is, this photometric calculation display circuit removes the maximum value comparison circuit 26, minimum value comparison circuit 27, maximum value storage circuit 29, and minimum value storage circuit 30 from the circuit shown in FIG. It has a configuration in which a value parallel storage circuit 37 is provided.

The input value parallel storage circuit 37 has its input terminal connected to the output terminal of the input value storage circuit 24 through the auto-gaze fixed terminal A of the switch SW ₃ , and receives calculation command pulses from the control pulse generation circuit 32. In response to this, a large number of contents of the input value storage circuit 24 are sequentially stored in parallel.
The output terminal of this memory circuit 37 is connected to the decoder 3
The decoder 31 decodes all the values stored in the storage circuit 37 and displays them on the display device 11. The memory circuit 37 is also connected to the output terminal of the clear pulse generating circuit 33, and all memory areas are reset to initial values by the clear pulse output from the clear pulse generating circuit 33. There is. This initial value is selected to be a negative value, so that when the storage area of the input value parallel circuit 37 has a negative value, nothing is displayed on the display device.

Note that the other constituent circuits and members are the same as the corresponding circuits and members in the photometric calculation display circuit shown in FIG. .

The operation of the viewfinder information display device 11 of the present invention when the photometric calculation and display circuit configured as described above drives and controls the device 11 will be briefly described together with the operation of the photometric calculation and display circuit.

Manual/auto switching interlock switch SW ₃ ~
When the movable contact of SW ₅ is switched to the fixed terminal A and the photometry command switch SW ₁ is closed, a photometry command pulse is generated in the control pulse generation circuit 32, similar to the circuit shown in FIG. 5 above, and this pulse In response, the latch circuit 23 latches the time value Tv which has been logarithmically compressed by the logarithmic compression circuit 21 and converted into a digital quantity by the AD conversion circuit 22. This time value Tv is temporarily stored in the input storage circuit 24.

Next, when the calculation command pulse is input to the calculation circuit 25 from the control pulse generation circuit 32, the circuit 25
calculates a new average time value from the storage contents of the input value storage circuit 24 and the calculation value storage circuit 28, and stores this in the calculation value storage circuit 28. At the same time, when the calculation command pulse is input to the input value parallel storage circuit 37, the circuit 37
stores the stored contents of the input value storage circuit 24 in an empty storage area.

The average time value stored in the calculated value storage circuit 28 is decoded by the decoder 31, and as shown in FIG. first and second display body rows 14 corresponding to
Fifteen display bodies 13 are driven and displayed. In addition, each time value Tv stored in the input value parallel storage circuit 37
is decoded by the decoder 31, and the display elements 13 of the first display element row 14 corresponding to each time value Tv are driven and displayed, as shown in FIG. 8, for example.

Therefore, the photographer can easily know before taking a picture how much brightness each photometric point has and at what average shutter speed the shutter operates. In this state, if you press the shutter release button (not shown),
The time forming circuit 35 operates according to the average time value stored in the calculated value storage circuit 28, and the shutter is operated at the average shutter speed obtained by multi-point spot photometry to take a photograph.

Note that the other circuit operations are similar to the circuit shown in FIG. 5 above, so a detailed explanation thereof will be omitted.

As described above, according to the present invention, since a plurality of display columns are arranged in correspondence with index columns, a plurality of different pieces of information can be displayed simultaneously in the finder, which is extremely convenient for use. It is possible to provide an information display device in the viewfinder of a camera.

In the above embodiments, the display device is formed of a liquid crystal display panel, but it goes without saying that the display device of the present invention may be a display device using a light emitting diode, or a display device using a combination of a liquid crystal and a light emitting diode. It is.

Furthermore, in the above embodiment, the displayed information is the shutter speed obtained as a result of multi-point spot metering in a multi-point spot memory metering type camera, but the displayed information is not limited to the shutter speed; Of course, it may be a value, a backlight correction value, or the like.

[Brief explanation of the drawing]

FIG. 1 is a side view of a main part showing the optical system of a camera in which the in-finder information display device of the present invention is installed;
FIG. 2 is a partial front view of an information display device in the viewfinder showing an embodiment of the present invention, and FIGS.
The figure is a partial front view of the finder image frame showing the arrangement position and display mode of the information display device in the finder shown in FIG. 2 above, and FIG. 5 is the information display device in the finder shown in FIG. 2 above. FIGS. 6A to 6C are electrical circuit diagrams showing an example of a photometric calculation/display circuit for driving and controlling the photometric calculation/display circuit shown in FIG. 5 above. FIG. 7 is a partial front view showing the display mode of the viewfinder information display device when driven by the display circuit, and the photometric calculation display circuit that drives and controls the viewfinder information display device shown in FIG. 2 above. FIG. 8 is an electric circuit diagram showing an example of this in blocks, and is a diagram of the display mode when the information display device in the viewfinder shown in FIG. 2 above is driven by the photometric calculation display circuit shown in FIG. 5 above. . 11...Finder information display device, 13...
... Display object, 14, 15 ... Display object column, 16 ... Index column.

Claims (1)

[Scope of Claims] 1. An index row in which indicators indicating exposure control values such as shutter speed and aperture value are sequentially arranged in a viewfinder; and a first index row in which indicators corresponding to at least the above indicators are arranged in a row in the finder a display column; a second display column arranged in parallel with the first display column in the viewfinder; and a display column in the first display column corresponding to the index according to the brightness of the subject. a display drive circuit that performs a first display drive that drives the display element and a second display drive that simultaneously selectively drives the display elements in the first and second display element rows corresponding to each of the indicators; Information display in the viewfinder of a camera, characterized in that the second display drive state is used as reference information of the brightness of the subject, and the first display drive state is used as information on the difference in brightness with respect to the reference information. Device.