JP3365852B2 - Camera with suitability indication - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for confirming a subject image.
Related to a camera using an image sensor,F etc.Situation of
The present invention relates to a camera having an aptitude / inappropriateness display means for indicating the following. [0002] 2. Description of the Related Art Conventionally, an object is displayed on an electronic viewfinder.
Display information about AE and AF of the user and show it to the user
Is expected. For example, JP-A-63-260638
In the gazette, it is predicted that blurring will occur based on subject distance information and luminance information.
Reduced the edge signal in the area to be blurred
There is disclosed a technology that makes it look like this. Further, Japanese Patent Application Laid-Open No. 61-39009 discloses
Is the target being automatically tracked by the automatic tracking device.
Technology to move the target mark in conjunction with
It is shown. [0004] SUMMARY OF THE INVENTION
With the technology disclosed in Japanese Unexamined Patent Publication No. 63-260638.
Is simulated because it is not blurred on the image sensor.
Was not accurate. Furthermore, the above-mentioned JP-A-61-3900 is disclosed.
In the technology disclosed in Japanese Patent Publication No. 9
Which target is available,
I didn't know if it was right. The present invention has been made in view of the above problems.
The purpose is that the user
Information about AF and AE of the subject can be quickly and
The purpose is to be able to confirm accurately. [0006] [MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
The present inventionIs a monitor that displays an image corresponding to the output of the image sensor.
Monitor means, and an image sensor image corresponding to the screen of the monitor means.
Calculate the average contrast signal peak for the entire surface
First calculating means, and an image sensor image divided into a plurality of regions
Calculate the peak of the contrast signal for each area of the surface
Calculated by the second calculating means and the first calculating means.
The averaged contrast signal peak and the second
The contrast signal of each area calculated by the calculating means
Is greater than the allowable defocus amount or
Comparing means for determining for each area whether or not
Greater than the allowable defocus amount obtained by
Storage means for storing address information of a small or small area
And the address information stored in the storage means and the imaging
Signal synthesizing means for synthesizing the element output;
Area corresponding to the above address information within the depth
Or a monitor that displays color on the monitor as out of depth
Driving means;It is characterized by the following. [0007] [0008] [0009] [Function] That is, the present inventionThen, the image sensor by the monitor means
An image corresponding to the output is displayed, and the above-described mode is
Average of the entire image sensor screen corresponding to the screen of the monitor
Calculates the peak of the contrast signal and sends it to the second calculating means.
Each area of the image sensor screen divided into multiple areas
To calculate the peak of the contrast signal,
The average computer calculated by the first calculating means.
The peak of the trust signal and the second arithmetic means
The difference between the calculated contrast signal peak of each area and
Whether the defocus amount is larger or smaller for each area
Calculated by the comparing means by the storing means
In the area larger or smaller than the allowable defocus amount
The address information is stored, and the storage means is stored by the signal synthesizing means.
The address information stored in the row and the output of the image sensor are combined.
Based on the synthesizing means by the monitor driving means,
The area corresponding to the address information is set within the depth or
The color is displayed on the monitor as out of order. [0010] [0011] [0012] Embodiments of the present invention will be described below with reference to the drawings.
Will be described. FIG. 1 shows a first embodiment of the present invention.
Shows the configuration of a camera with aptitude / inadequacy indication means
I will tell. As shown in FIG. 1, on the optical path of the subject light,
Two-unit zoom lenses 1 and 2 consisting of irregular lens groups and aperture
3, a half mirror 6 is arranged,
A mirror 7 is arranged on the optical path of the light reflected by 6.
An imaging lens is provided on the optical path of the light reflected by the mirror 7.
8, an image sensor 9 is arranged. The aperture 3 is
It is arranged between the zoom lens 1 and the zoom lens 2. On the other hand, the light transmitted through the half mirror 6
On the optical path, there is a focal plane shutter 4 and a fill
Are arranged respectively. Therefore, the zoom lens
Approximately half of the light passing through 1 and 2 is transmitted to the film 5 side.
And the other half is reflected upwards. And the subject image
Forms an aerial image at a position commensurate with the film 5, and the mirror
And reflected by the imaging lens 8 onto the image sensor 9
It is imaged. The image area of the image sensor 9 is large.
The size of the area is changed by inserting the imaging lens 8.
Is smaller than the screen size of the film 5.
Further, the image sensor 9 has a light receiving portion of several hundred thousand pixels and a light receiving portion.
Charge-coupled device (CCD; Charge Co
upled Device). And, this light receiving part has R
A GB color filter is formed on each pixel in a predetermined pattern.
Has been established. Further, the output of the image sensor 9 is pre-
Connected to the input of the
The power is applied to the signal processing circuit 11, the luminance signal processing circuit 12, and the color signal.
Connected to the input of FM modulation circuit 14 via signal processing circuit 13
Have been. The output signal of this imaging device 9 is
The signal processing circuit 12 and the color signal processing circuit 13
After a predetermined process is performed by the FM modulation circuit 14, one signal
No. The output of the luminance signal processing circuit 12 is
Connected to inputs of AE operation circuit 15 and AE division operation circuit 16
The output of the AE division operation circuit 16 is an AE add
Connected to the input of the memory circuit 17. This AE performance
The arithmetic circuit 15 averages the luminance signal of each pixel over the entire screen.
The amount of exposure to be performed on the film 5 is calculated. The AE division operation circuit 16 displays the screen.
Divide into multiple parts and perform the appropriate exposure for each of the divided areas.
The appropriate exposure amount is calculated as the averaged exposure amount for the entire screen.
Is compared with the appropriate exposure for each area, and the difference
If there is, the address of the area is stored in the AE address.
It is stored in the circuit 17. Further, the output of the luminance signal processing circuit 12
Is also connected to the input of the frequency division circuit 18,
The output of the wave number dividing circuit 18 is also
It is connected. The output of the AE operation circuit 19
Is the input of the lens control circuit 28 and the AF address recording circuit 21.
Connected to power. Then, the AF division operation circuit 2
The output of 0 is connected to the input of the AF address storage circuit 21.
ing. The lens control circuit 28 is an AF operation circuit.
Lens 1 for focusing based on the output of 19
Drive. The frequency division circuit 18 allows the image pickup
Among the luminance signals of the element 9, a signal in a predetermined frequency band is A
The signal is transmitted to the F operation circuit 19. Then, the AF calculation circuit 1
Reference numeral 9 denotes a so-called hill-climbing method of the contrast signal of the entire screen.
Focusing is performed in search of the largest place. Further
Next, the AF division calculation circuit 20 divides the screen into a plurality of
The largest contrast signal for each of the divided areas
Calculate the rollers. Then, the AF address storage circuit 21
Indicates the averaged focusing position of the entire screen and each area.
Compare with the maximum contrast signal position for each
When there is the above difference, the address of the area is stored. On the other hand, the FM modulation circuit 14 and the AE address
The outputs of the storage circuit 17 and the AF address recording circuit 21 are
It is connected to the input of the signal combining circuit 22. And this
The signal synthesizing circuit 22 normally outputs the output signal of the FM modulation circuit 14.
If you drive the monitor 24 with
From the AE / AF address storage circuits 17 and 21
Overexposed, underexposed or out of focus table for area
When you want to display, only the specified address area is colored and displayed.
Combine the signals to show. The output of the signal synthesizing circuit 22 is
The monitor drive circuit 23 for driving each pixel of the
The input is connected to the input of the CCD monitor 24 via the input terminal. Further
The output of the signal synthesizing circuit 22 passes through an A / D conversion circuit.
And is connected to the input of the memory 26. This A / D change
The conversion circuit 25 outputs the subject image signal from the FM modulation circuit 14.
, And the memory 26 stores the digital signal.
You. The output of the memory 26 is a D / A conversion circuit
27 to the input of the signal synthesis circuit 22.
You. The D / A conversion circuit 27 stores the
The stored digital signal is converted back to analog and
It outputs to the formation circuit 22. The zoom lens 1 has its position information.
Lens position encoder 29 that outputs
The output of the lens position encoder 29 is calculated by the AE calculation.
The circuit 18 is connected to the input of the AF division operation branch 20.
You. Further, an aperture control circuit 30 is provided in the aperture 3.
Is connected to the shutter 4, and a shutter control circuit
The path 31 is connected, and the aperture control circuit 30
The AE operation circuit 15 and the A add
The E-recording circuit 17 is connected. And this squeezing
The AE control circuit 30 and the shutter control circuit 31
The aperture 3 and the shutter 4 are released based on the output of the arithmetic circuit 15.
Control each. The zoom lenses 1 and 2 have
A zoom circuit 32 for changing the focal length is connected.
The film 5 has a film feeding circuit 33 and
For recording information necessary for film and film magnetic recording Px
An air recording circuit 34 is connected. In addition, Patrone
35 is a patroller for reading the code on the patrone exterior.
The Rhone code reading circuit 36 is connected. Further, the control circuit 37 has various users.
The operation unit 38 for inputting information using the switches
The output of the control circuit 37 is
30, zoom circuit 32, shutter control circuit 31, fill
Feeding circuit 33, magnetic recording circuit 34, patrone code
Read circuit 36, memory 26, signal synthesis circuit 22, AF
Operation circuit 19, AE operation circuit 15, AE division operation circuit 1
6 inputs. In addition to the above parts, the system
The control is performed by the control circuit 37. FIG. 2 shows the film 5 and the photographic image.
A state in which a subject image is formed on the image element 9 via an optical system
Will be described. In FIG. 2, the zoom lens
1 and 2 are collectively shown by one convex lens. In FIG. 2, the object on the film 5
The image magnification of the body is determined based on the subject distance l0 and the lens principal point.
Β1 = l1 / l0 in the ratio of the distance l1 to the distance. So
Then, the film reflected by the light beam reflected by the half mirror 6
An aerial image is formed at a position commensurate with the plane. In addition, imaging
The aerial image is further updated on the element 9 by the lens 8 for the image pickup element.
The image is reduced and formed. The ratio is a virtual image that is a co-reduction of the aerial image
From the principal point to the principal point of the lens 8 and the image sensor from the principal point
And the ratio l3 / l2 to the distance l3 to the camera. Further, compared to the film screen size,
The ratio of the screen size of the child is l3 / l2 times, and the film
Image magnification on image sensor 9 using image sensor 9 smaller than screen
The rate β2 is expressed by the following equation. [0031] (Equation 1) The field lens is located at a position where an aerial image can be formed.
Is placed. This is because a part of the luminous flux of the aerial image is
This is to prevent the child lens 8 from being shaken.
Hereinafter, the first embodiment will be described with reference to the flowchart of FIG.
Will be described. Turn on the power switch (not shown)
Then, the monitor 24 is turned on and the subject image on the image sensor 9 is turned on.
Is displayed on the monitor 24 (step S1). Then, the release button is pressed almost halfway for 1 second.
When the t release signal is output (step S2), the image is captured.
The output of the luminance signal processing circuit 12 is the output of the element 9.
The AE operation circuit 15 outputs the luminance signal output over all pixels.
Is calculated, and the average value is calculated (step S
3). Subsequently, the AF calculation circuit 19 controls the lens control.
The circuit 28 is driven to move the focusing lens 1
The contrast signal is detected over all pixels while scanning.
And stop lens 1 at its maximum position.
(Step S4). Note that the contrast signal is
It is obtained by adding the absolute values of the elementary output differences. this
Is expressed by the following equation. [0035] (Equation 2) Becomes This ΔV is a contrast signal, and the ΔV is the maximum.
The largest position is the most focused on the entire screen.
Position. When the lens driving is completed, the AE
The division operation circuit 16 obtains a luminance signal over a plurality of regions,
These values and the image sensor obtained by the AE operation circuit 15 described above.
9 is compared with the average luminance of the whole (step S5). Soshi
If this difference is within the latitude of film 5,
There is no title, but if it is larger, the area is over
Or that it is under. Contents of this display
When determining over / under for each area,
The address is stored in the AE address recording circuit 17,
The image signal of the image, that is, the output of the FM
The signal combining circuit 22 combines the dress signal and
Color on the monitor 24 and display it on the monitor 24.
(Step S6). This state is as shown in FIG. This figure
In 4, the screen is divided into 16 areas, and the luminance signal of each area is divided.
Is an area of ± 1 EV or more with respect to the average value BVAV = 10.2
Are indicated by hatching. Next, the camera displays a similar display for AF.
Perform the operation as required. That is, the calculation of the above equation (2) is
Scanning lens 1 while performing over the entire surface
In particular, the contrast signal is hill climbing as shown in FIG.
Type signal. The entire focusing is a contrast
If the lens is set at the position where the signal ΔV becomes maximum,
Focusing photos can be taken. Of this lens scan
At the same time, a similar
By performing the calculation, a hill-climbing signal can be obtained for each area.
Lens position encoding between the peak of each area of
If the difference between the outputs of the coder 29 is small, the area is within the depth of focus.
If it is large, the area will be blurred. At the boundary AA ', the light intensity
Lens aperture value F, allowable confusion circle diameter on film δ,
The vertical magnification of the lens 1 with respect to the film surface is β^Two Then
When the lens 1 is moved by 1 mm, the subject image
× β^Two mm), ± F × δ / β from the focal point O^Two In
You. Therefore, the difference between the total peak and the peak in each region is Fδ
/ Β^Two Focuses on i = 1,2,4,5
However, when i = 3,6, the image is blurred. In this embodiment,
Address of i = 3, 6 in the AF address storage circuit 2
1 is stored, and the area is stored by the signal synthesis circuit 22.
Display in color. This situation is as shown in FIG. In the figure
Indicates those within the depth of focus by hatching. This
As shown in the above, if you divide into 16 divisions and subdivide it
(See FIG. 6B), the person itself is colored and displayed.
(See FIG. 6C). A as above
Display over / under F or AF depth
Is not what the user wants, change the composition and aperture.
The release button is completely pressed,
When the nd release signal is output, the film 5 is exposed.
At the same time, it is also recorded in the memory 26,
You can check. And after these processes,
The film is fed by one frame. Next, FIG. 7 shows an AE over / under display.
6 is a flowchart showing a sequence of the above. This sequence
In the sense, the luminance signal is added for each pixel, and it is added to the number of pixels.
The average luminance BVAV is obtained by dividing by n (step S2).
1 to S29). Then, the latitude ΔBV of the film 5
From whether the brightness of each pixel exceeds BVAV + ΔBV
And if it exceeds, memorize the address i.
Teku. Further, from the latitude ΔBV of the film 5,
Determines whether the pixel brightness is less than BVAV-ΔBV
If the address is small, the address i is stored.
Steps S30 to S36). Thus, the stored address
The signal synthesizing circuit 22 operates on the
By coloring the image only in the above areas, over / under
Is displayed (steps S37, S38). FIG. 8 is a flowchart of AF lens control.
It is. Here, the entire screen is divided into n areas.
The following description will be made assuming that this is the case. First, the contrast group
Clear all the reference signals ΔViref (i = 1 to n) (step
S41 to S44). Next, reset the lens
Feed out a small predetermined amount (steps S45 and S46). The contrast signal ΔV for each region
i to calculate the contrast signal ΔVi and the contrast.
Compare with the reference signal ΔViref. Where the contrast signal
If the signal ΔVi is larger, the contrast signal ΔVi
Stored in place of the trust reference signal ΔViref and
The contrast signal of the area is detected. Repeat this process
And the contrast signal ΔVi is the contrast reference signal Δ
When it becomes smaller than Viref, the balanced contrast signal
Since the peak of hill climbing has been exceeded,
Store the output of the encoder in the dress storage circuit 21
(Steps S48 to S55). By repeating this operation, each area is
And the encoder output value of each one peak is stored
(N in total). The average of these n encoders is
The peak of the average contrast over the entire screen.
, And by extending the lens there, the entire screen
The best focus position is obtained (Steps S56 to S
59). Next, FIG. 9 shows the depth based on the n encoder values.
It is a flowchart which shows the sequence of a display. First,
F · δ / β^Two (Permissible defocus amount) is obtained, and FIG.
± F · δ / β with respect to the focus position obtained in^Two Calculate
(Steps S61 and S62). And the end of each area
Coder value is larger than ENMAX or smaller than ENMIN
In this case, the address (i) is stored and the signal
2 (steps S63 to S69). Then,
Signal combining circuit 22 combines the subject image with the address signal.
Coloring the area inside or outside the depth of the entire screen
It is displayed on the monitor 24 (steps S70, S71). Next, FIG. 10 shows AE over when a strobe is used.
-Flow chart showing the sequence of the under / under display
is there. In this sequence, the lens position encoder 29
The subject distance is calculated from the output, and the distance that becomes ± 1 EV
Each area is within the separation (× 1.4 times, × 0.7 times) range
Judge whether it is within the above range or not.
Over / under display is performed by the programmer 24 (step
S81 to S92). FIG. 11 shows the operation according to the second embodiment.
It is a flowchart. AE over / under recognized
When it is recognized, the area and the
Is recorded (step S1).
01 to S105). This recording means has already been
Since various configurations are known, details are omitted. Second
In the embodiment, a print is printed by a digital printer at a developing laboratory.
Read the information and adjust the exposure compensation.
Can be removed. Next, FIG. 12 shows the suitability and unsuitability according to the third embodiment.
FIG. 2 is a diagram illustrating a camera having a sex display unit. This third fruit
This embodiment differs from the above embodiment in that the focus detection system
Peak detection, that is, the contrast method "
This was changed to a triangulation method. That is, this third fruit
In the embodiment, the distance measurement
A lens system 39 is provided, and the luminous flux of the subject from the photographing lens system 1 is provided.
And the subject luminous flux from the lens system 39 together to the image sensor 9
It is intended to be guided. Here, the image pickup device 9 is moved from the photographing lens system.
Of the subject light and the subject light from the lens system 39
Is divided into n regions for each part to receive
Calculates the interval between two images on the image sensor 9 as is known in
In this way, the absolute subject distance can be calculated for each of the n areas.
You can ask. This means that X = S as shown in FIG.
× f / l. As described in detail above, the suitability of the present invention
In the camera having the characteristic display means, the image signal of the image sensor 9 is
Calculate information on AF and AE from the monitor 24
Can be displayed. Therefore, the user has to perform complicated operations.
AF, AE of the monitor
You can check the contents. According to the embodiment of the present invention,
Is obtained. (1) Exposure amount control means, focusing means, image sensor,
Electronically displays the subject image based on the output of the image sensor
A camera having a monitor means,
At least one of the exposure information and the focus information based on the force
Exposure based on the calculation means to be obtained and the output
Monitor the suitability / inappropriateness of at least one of the amount and focus state
Outputs a signal for displaying each area separately on the means
Display signal output means.
Camera with gender / impropriety display means. (2) In the above (1), the display signal output means is
Area divided into a plurality of subsections on the monitor
It outputs a signal that can indicate suitability / inappropriateness every time. (3) In the above (1), the display signal output means is
On the monitor means, either the appropriate area or the inappropriate area
It outputs a signal that makes the display form different from the other. (4) In the above (1), the calculating means is the whole image of the image sensor.
Based on the average surface output, the exposure information and / or
Average calculation means for obtaining focus information, and for each small section of the image sensor
A division operator for obtaining exposure amount information and / or focusing information
It consists of steps. (5) In (1) above, the suitability or unsuitability of the exposure dormitory
The amount of light is over and under. (6) In the above (1), the suitability and unsuitability of the focused state are
It is characterized by focusing and non-focusing. (7) In the above (1), the suitability or unsuitability of the focused state is
Whether the subject is within the depth of field
Features. (8) It has an exposure control means, a focusing device, and an image sensor.
The camera according to the image sensor output.
Display driving means for displaying on the imager means,
Obtain exposure information and focus information based on full screen output
First calculating means, based on an output of each of the small regions of the image sensor,
To obtain exposure amount information and focusing information for each small area.
Calculating means, the first calculating means output and the second calculating means output
Is obtained for each of the small areas, and the difference is equal to or more than a predetermined amount.
Sometimes, the storage means for storing the position of the small area is
A signal for combining the output signal of the storage means with the display driving means.
And a synthesizing unit. (9) An exposure amount control means, a focusing device, and an image sensor are provided.
The camera according to the image sensor output.
Display driving means for displaying on the monitor means, and the imaging device
Exposure information and focusing information based on full screen output
A first calculating means, based on the output of each of the small areas of the image sensor.
Then, the exposure amount information and the focusing information for each small area are obtained.
2 operation means, the first operation means output and the second operation means output
A comparison means for obtaining a difference from a force for each of the small areas;
When the output of the means is equal to or more than a predetermined amount, the position of the corresponding small area
Storing means for storing the signal, and displaying the signal of the storing means on the display
Signal synthesizing means for synthesizing by the driving means.
A camera characterized by the following. (10) The first optical system and the second optical system, and
1. an imaging device disposed behind the second optical system;
A mode for electronically displaying a subject image based on the output of the imaging device.
Focusing information based on the output of the image sensor.
Based on the output of the calculating means.
For displaying in-focus and out-of-focus for each area on the monitor
Means for outputting a signal.
Mela. (11) Exposure amount control means, focusing device, and image sensor
Cameras using film with magnetic recording
Display an image corresponding to the output of the image sensor on a monitor.
Display driving means for controlling the
Calculating means for obtaining exposure amount information and focusing information based on the
And the small area based on the output of each of the small areas of the image sensor.
Second calculating means for obtaining exposure information and focusing information for each
The difference between the output of the first calculation means and the output of the second calculation means is calculated as
The comparison means to be obtained for each area, and the output of the comparison means is a predetermined amount
When there is more than one, a memory device for storing the position of the corresponding small area
And the signal from the storage means output to the display drive means.
And a signal corresponding to the output of the comparing means.
Recording means for recording a signal on a magnetic recording portion of the film.
Camera equipped with. (12) First optics for guiding a subject light beam to a photographic film
System and a second optical system different from the first optical system.
A second optical system for guiding the subject light beam to the image sensor;
The image is inserted between the first optical system and the film for photography.
A half mirror for guiding a part of the body light beam to the image sensor,
Electronically displaying a subject image based on the output of the imaging device
Monitoring means, and focusing information based on the output of the image sensor.
Calculating means for determining at least one of the exposure amount information;
Based on the output of the calculating means, the in-focus and
Monitor means for at least one of the in-focus state and the exposure suitability state
Means for outputting a signal to be displayed above,
Signal corresponding to at least one of information and exposure information for shooting
Recording means for recording on a film.
And the camera. [0054] According to the present invention, the user can control the electronic view.
A of subject on FinderTo FQuick and accurate information about
Aptitude / inadequacy indication means that can be confirmed
A camera can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a configuration of a camera having aptitude / inappropriateness display means according to a first embodiment of the present invention. FIG. 2 is a diagram showing a state in which a subject image is formed on a film 5 and an image sensor 9 via an optical system. FIG. 3 is a flowchart showing the operation of the first embodiment. FIG. 4 is a diagram showing a state where only an over / under area is colored and displayed on a monitor 24; FIG. 5 is a diagram illustrating a relationship between a lens position encoder output and a contrast signal. FIG. 6 is a diagram showing a state of screen display in which display inside the depth and display outside the depth are separated. FIG. 7 is a flowchart showing details of AE over / under display. FIG. 8 is a flowchart of AF lens control. FIG. 9 is a flowchart showing a sequence for performing depth display based on n encoder values. FIG. 10 is a flowchart showing a sequence for performing AE over / under display when a strobe is used. FIG. 11 is a flowchart showing an operation of a camera having aptitude / inappropriateness display means according to the second embodiment. FIG. 12 is a view showing a camera having aptitude / inappropriateness display means according to a third embodiment. 13 is a diagram showing in detail a part of an optical system of a camera having the suitability / inappropriateness indication means shown in FIG. [Explanation of Signs] 1, 2 ... Zoom lens, 3 ... Aperture, 4 ... Shutter, 5 ...
Film: 6 half mirror, 7 mirror, 8 imaging lens, 9 imaging element, 10 preamplifier, 11 signal processing circuit, 12 luminance signal processing circuit, 13 color signal processing circuit, 14 FM modulation Circuit, 15 AE operation circuit, 16 ...
AE division operation circuit, 17: AE address storage circuit, 18
... frequency division circuit, 19 ... AE operation circuit, 20 ... AF division operation circuit, 21 ... AF address recording circuit, 22 ... signal synthesis circuit, 23 ... monitor drive circuit, 24 ... monitor, 25
... A / D conversion circuit, 26 ... Memory, 27 ... D / A conversion circuit, 28 ... Lens control circuit, 30 ... Aperture control circuit, 31
... Shutter control circuit, 32 ... Zoom circuit, 33 ... Film feeding circuit, 34 ... Magnetic recording circuit, 35 ... Patrone,
36 ... patrone code reading circuit, 37 ... control circuit, 3
8. Operation unit.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G03B 17/18-17/20 G03B 17/36 G02B 7/28-7/40

Claims (1)

(57) and a monitor means for displaying an image corresponding to the Claims 1] IMAGING element output, the entire imaging device screen corresponding to the screen of the monitor means Rights
First calculation for calculating peak of average contrast signal
Means and each region of the image sensor screen divided into a plurality of regions
Second calculating means for calculating the peak of the contrast signal
And the average control calculated by the first calculation means.
Calculated by the peak of the last signal and the second calculating means
The difference between the peak of the contrast signal of each region
Whether the defocus amount is larger or smaller for each area
Comparison means for determining, the allowable defocus obtained by the comparing means
Stores address information for areas larger or smaller than amount
Storage means, address information stored in the storage means, and the imaging device
A signal synthesizing unit for synthesizing the output with the address information based on the synthesizing unit.
Display the area on the monitor as the area inside or outside the depth
Features and to Luke camera by comprising a monitor driving means shown, a.