JP2001061084A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a picture that is digitally photographed with the similar photographing effect to that by silver-salt photographing. SOLUTION: A filter detection section 3 detects a characteristic of a photographing filter 1 and provided an output of it to a CPU 60. The CPU 60 reads filter characteristic data in response to the result of detection from a nonvolatile memory 59 and applies image processing to image digital data on the basis of the filter characteristic data. Thus, a digital picture from a signal processing circuit 31 has a similar photographing effect to that of a picture photographed on a silver-salt film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has both functions of a silver halide photographing apparatus for projecting a subject image on a silver halide film and an electronic photographing apparatus having an electronic imaging device for converting the subject image into an electric signal. The present invention relates to a camera which combines silver halide photography and electronic photography.

[0002]

2. Description of the Related Art In a silver halide camera that exposes a subject image to a silver halide film, it is difficult to determine whether an image photographed on the film is projected as intended by the photographer without developing the film. However, it is generally impossible to predict the result at the time of shooting.

[0003] In order to solve this problem, simultaneously with exposing a subject image to a silver halide film, a subject image photoelectrically converted by an electronic image pickup device is stored in a memory, and the stored subject image is displayed on a monitor. Accordingly, a camera for both silver halide photography and electronic photography that makes it possible to predict the finished state at the time of photography has been proposed.

For example, Japanese Patent Application Laid-Open No. 11-149112 discloses that an image is taken by an electronic image pickup device at the same time as a silver halide film photographing through an electronic photographing optical system different from the silver halide photographing optical system. A camera that displays an image on a monitor is disclosed.

On the other hand, at present, various filters for photographing (hereinafter, filters) exist. These filters block invisible light that does not feel to the naked eye but affect the film, so that you can reproduce the subject as if you felt it with the naked eye, or simply to faithfully reproduce the sense of reality Rather, it is used for purposes such as obtaining a wider photographic expression.

[0006] Filters (visual effect filters) suitable for the former purpose include a UV filter, a skylight filter, an anti-reflection polarizing filter (PL filter), etc., which are infrared absorption filters, and a filter (special filter) suitable for the latter purpose. Effect filters) include soft focus filter, center focus filter, cross filter,
There are rainbow images, etc.

[0007] An infrared absorbing filter such as a UV filter or a skylight filter is a filter that absorbs ultraviolet rays that are not perceived by the naked eye but perceived by the film. Especially on a sunny day where there is a lot of ultraviolet light, this ultraviolet light hits water vapor and dust in the atmosphere and causes a phenomenon of diffuse reflection, which prevents the image from becoming unclear. It is effective for shooting.

[0008] Polarization filter for removing reflection (PL filter)
Is to eliminate reflections from windows, reflections on the water surface, surface reflections hitting objects, etc., and to better capture the objects inside, or to prevent reflections from still life to express a close feeling. Further, in a landscape with a blue sky, the tone of the blue sky is slightly darkened, and the contrast is enhanced.

The soft focus filter is for creating a flare on the screen to create a unique soft mood, and the center focus filter is for blurring the periphery and omitting the points.

[0010] The cross filter and the rainbow image are
It can create a light beam such as electric light or headlights that shine on the sea surface or the ground when the sun shines on it, or a night scene, and can also create a light beam in necklaces, water drops, etc.

Further, a conversion lens for silver halide photography such as a teleconverter or a wide converter is used. The conversion lens is an optical system that is used by being attached to a photographing lens, and converts a focal length of the photographing lens to a long focal length side or a short focal length side.

[0012]

However, even if the above-mentioned various filters are mounted on the camera disclosed in Japanese Patent Application Laid-Open No. H11-149112, digital cameras using the electronic image pickup device do not take pictures through the filters. A digital image with the effect of the filter cannot be obtained.

When the conversion lens is attached, the monitor display of the electronic photographing result is performed based on the photographing angle of view of the photographing lens not equipped with the conversion lens. The effect of the lens is not taken into account.

As described above, when a photograph is taken with a filter or a conversion lens attached, a digital image for confirming whether or not the image is photographed on the film as intended by the photographer matches the film photographing result. There is a problem that it cannot be confirmed at all.

An object of the present invention is to provide a camera which is capable of predicting a finished state at the time of photographing even when a filter for photographing and a conversion lens are mounted in a camera for both silver halide photographing and electronic photographing. Aim.

[0016]

A camera according to a first aspect of the present invention includes a first optical system, and silver halide photographing means for exposing a subject image to a silver halide film via the first optical system; Second
An electronic imaging device including an optical system and capturing an image of a subject by an electronic imaging device via the second optical system; and a monitor for displaying the subject image based on an output of the electronic imaging device;
Control means for changing the display of the monitor means in accordance with insertion of an optical attachment into the optical path of the first optical system;
The silver halide photographing means exposes a subject image to a silver halide film via the first optical system. The electronic imaging device captures a subject image with an electronic imaging device via a second optical system. The subject image picked up by the electronic image pickup device is displayed by the monitor. When the optical attachment is inserted into the optical path of the first optical system, the control unit changes the display on the monitor unit.

A camera according to a second aspect of the present invention includes a first optical system, a silver halide photographing means for exposing a subject image to a silver halide film through the first optical system, and a second optical system. An electronic image capturing apparatus for capturing an image of a subject by an electronic imaging device via the second optical system, a monitor for displaying the subject image based on an output of the electronic imaging device, and a silver halide to the first optical system Detecting means for detecting the mounting of the optical accessory for photographing; and control means for changing the display of the monitor means when the mounting of the optical accessory for silver halide photographing is detected by the detecting means. is there.

According to a second aspect of the present invention, the silver halide photographing means exposes a subject image to a silver halide film via a first optical system, and the electronic imaging device comprises an electronic imaging device via a second optical system. To capture a subject image. The subject image picked up by the electronic image pickup device is displayed by the monitor. When the detection unit detects that the silver halide imaging optical accessory is attached to the first optical system, the control unit changes the display on the monitor unit.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a first embodiment of the invention.
It is a block diagram which shows the camera which concerns on embodiment. FIGS. 2 to 4 are perspective views showing the appearance of the camera according to the first embodiment.

In the present embodiment, a digital image signal obtained by electronic photographing is signal-processed in accordance with characteristics at the time of silver halide photography using an optical accessory for silver halide photography such as a filter for photography of silver halide photography. Also, in electronic photography, it is possible to obtain a photography result similar to the photography result of silver halide photography.

FIG. 2 shows a state in which the strobe light emitting unit 11 is housed in the camera body. A power switch 10 for turning on / off the power of the camera is provided on the upper left side of the camera body.
A release switch 12 for instructing the start of operation of the silver halide imaging device or the electronic imaging device and a shooting mode button 13 for designating a shooting mode are provided on the right side of the upper surface of the camera body.
Is arranged. Note that the strobe light emitting unit 11
Can be popped up from the camera body, and a strobe light emitting device is provided inside the unit as described later.

FIG. 3 shows a state in which the strobe light emitting unit 11 pops up, and the strobe light emitting unit 11 mechanically pops up in conjunction with the ON operation of the power switch 10. At the time of pop-up, a light emitting panel 64 for transmitting strobe light is provided at a position substantially in front of the light emitting panel.

At the tip of the taking lens barrel 300, a filter connecting part 4 is provided. A filter 1 for taking a silver halide photograph, which is one of the optical accessories for taking a silver halide photograph, can be connected to the filter connection section 4.

FIG. 4 is a perspective view of the camera viewed from the back. On the back, an eyepiece window 15 of an optical finder for observing the subject image based on the subject light transmitted through the taking lens, a monitor screen 16 for displaying the subject image based on a video signal output from the image sensor, and a zoom Zoom up / down operation buttons 17 for manually changing the focal length of the lens are provided.

Next, the camera operation performed by the camera operator will be described. First, by operating the power switch 10, the power of the camera body is turned on, and at the same time, the strobe light emitting unit 11 pops up. Next, the camera operator determines the composition while looking at the eyepiece window 15 of the optical viewfinder. At this time, the focal length of the photographing lens can be arbitrarily changed by operating the zoom up / down button 17. When the composition is determined and the photographing is performed, the photographing sequence is started by pressing the release button 12 (details of the photographing sequence will be described later). At this time, the subject image is exposed on the film and is captured by the electronic image sensor (the area sensor 34 in FIG. 1).
An electronic image is captured by the camera. The captured electronic image is displayed on the monitor screen 16. When the camera operator checks the video on the monitor and determines that his / her shooting intention is not reflected, the camera operator can try shooting again.

FIG. 1 is a block diagram showing a system according to this embodiment. A photographic lens for forming a subject image is composed of a positive lens 40 and a negative lens 42, and a diaphragm mechanism 41 is disposed in the photographing lens.
1 is driven and controlled by the aperture driving circuit 51. Behind the negative lens 42, a movable mirror 43 whose pivotally supported upper end is the center of rotation is provided. The movable mirror 43 has a half mirror at a substantially central portion and a sub-mirror 47 provided at a central rear portion. Sub mirror 47
When the movable mirror 43 is at the lowered position, the object light passing through the movable mirror 43 is reflected downward, and when the movable mirror 43 is at the raised position (horizontal position), the same as the movable mirror 43 is performed. To a horizontal position.

A separator optical system 48 composed of two optical systems for separating two images is arranged in the direction of the reflection optical axis of the sub-mirror 47 and in the direction perpendicular to the drawing. A line sensor 49 is disposed at a position where the object image is formed by the separator optical system 48, and the line sensor 49 is connected to a line sensor drive circuit 53. The sub-mirror 47, the separator optical system 48, the line sensor 49, and the like constitute a focus detection device based on a known phase difference method. The distance between the images is obtained, and the driving amount of the photographing lens for driving to the focus position is calculated.

Each of the lenses 40 and 42 of the photographing lens is provided with a zoom / focus drive circuit 50 for controlling a drive source for a focus adjustment operation and a zooming operation. The zoom / focus drive circuit 50 has an encoder (not shown) that generates a signal in accordance with the movement of each lens. The CPU 60 adjusts the focus based on the calculated drive amount and the encoder output. Do.

FIG. 5 is a block diagram showing a specific circuit configuration of the filter detecting section 3 in FIG. 1 and a circuit configuration of the filter 1 for photographing a silver halide photograph. The filter 1 for photographing can be provided in front of the photographing lens 40 by a filter connecting portion 4 (see FIG. 2). The photographic filter 1 has a resistor 2 (resistors 2a and 2b) as information generating means for indicating information on filter characteristics. The resistance values of the resistors 2a and 2b are set to different values according to the type of the filter.

The filter detection section 3 has a filter connection section 4 and an A / D conversion circuit 5. When the photographing filter 1 is connected to the filter connection section 4, the A / D conversion circuit 5 controls the filter 1. The resistance value of the internal resistor 2 is detected.

FIG. 6 is a perspective view showing the photographing filter 1 and the filter connecting portion 4 in detail. In FIG. 1B, an annular locking portion 101 is provided on an outer peripheral portion of the photographing filter 1, and a ring portion 102 is provided on one surface side of the locking portion 101. As shown in the figure, the annular portion 102 is provided with claw portions 103, 104, and 105 on the outer periphery of the distal end, and concave portions 106, 107, and 108 on the surface of the distal end. Note that the outer peripheral portions 103a, 104a, and 10 of the claw portions 103, 104, and 105 respectively.
5a are formed so as to form concentric arcs, and their outer peripheral portions have the same length, and are formed at regular intervals with respect to the inner periphery of the filter mounting portion 401.

A resistor 2 (not shown in FIG. 6) having a resistance value set according to the filter characteristics of each filter is provided inside the ring portion 102, and the concave portions 106, 107 and 1 are provided.
08. Photo Filter 1
Is mounted on the filter mounting portion 401 (FIG. 6A) of the illustrated filter connecting portion 4 from the side where the ring portion 102 is provided. The surface of the filter connection unit 4 where the filter mounting unit 401 is not provided is connected to the camera body in FIG.

The inner diameter of the filter mounting portion 401 is
The diameter is set to be slightly larger than the diameter of the circle formed by the outer circumferences of 3, 104 and 105. As shown in the drawing, the claw 40 is provided on the end face 402 side of the filter mounting section 401.
3, 404 and 405 are provided. Note that the claw portion 40
3, 404 and 405 have thicknesses of the locking portion 101 and the claw portion 1.
03, 104, and 105, and the inner circumferential portions 403a, 403 of the claw portions 403, 404, and 405, respectively.
04a and 405a are formed so as to form concentric arcs, and the diameter of the concentric circle is slightly larger than the outer shape of the ring portion 102. Then, the outer peripheral portions 403a, 404a, 4
The length of 05a is provided slightly shorter than the installation interval of the claw portions 103, 104, and 105, and the claw portions 403, 404, and 4 are provided.
The installation interval of 05 is slightly longer than the length of the claw portions 103, 104, 105.

Next, an example of mounting the photographic filter 1 and the filter mounting section 401 will be specifically described. Ring part 102
The ring portion 102 is attached to the filter mounting portion until the locking portion 101 engages with the end surface 402 so that the claw portions 103, 104, 105 and the claw portions 403, 404, 405 do not come into contact with each other. Insert into 401. When the locking portion 101 is engaged with the end face 402, the concave portion 1 of the photographing filter 1
The photographic filter 1 is rotated in the direction of arrow A or B while pressing the photographic filter 1 until each of the projections 406, 407 and 408 provided on the filter mounting portion 401 enters each of 06, 107 and 108. Projections 406, 40
7 and 408 enter the recesses 106, 107 and 108, respectively.
03 is a claw portion 404 between the locking portion 101 and the claw portion 104.
However, the claw portion 405 is inserted between the locking portion 101 and the claw portion 105 and is fixed respectively. The protrusions 406, 407, and 408 are connected to the A / D conversion circuit 5 shown in FIG. 5, and the A / D conversion circuit 5 is connected to the resistor 2 obtained through the recesses 106, 107, and 108. Convert the resistance value to a digital signal.

The digital signal from the A / D conversion circuit 5 is output to the CPU 60 as a detection result by the filter detection section 3. The CPU 60 refers to the filter characteristic data in the non-volatile memory 59 based on the detection result of the mounted filter 1 by the filter detection unit 3. And
The image digital data obtained by the signal processing circuit 31 is subjected to image processing based on the filter characteristic data, and the photographing filter 1 adapted to the image photographed on the silver halide film 1
Create an image that demonstrates the effects of.

Since the finder optical unit 67 having a pentaprism is disposed on the reflection optical path of the movable mirror 43, the camera operator looks through the finder eyepiece window 15 at the time of photographing and photographs while confirming the subject image. be able to. Inside the strobe light emitting unit 11, a light emitting tube 68, a reflector 63, and a light emitting panel 64 for condensing the light emitted from the light emitting tube and irradiating the light to the subject side are arranged. It operates for subject illumination when the image is captured by the sensor 34. Further, an imaging lens 66, a fixed stop 65, and a two-dimensional area sensor 34 are disposed in the strobe light emitting unit 11, and the two-dimensional area sensor 34 is provided.
Is controlled by the area sensor drive circuit 32, converts the formed subject image into an analog video signal, and outputs the analog video signal to the signal processing circuit 31. The signal processing circuit 31 performs predetermined signal processing including conversion of the analog signal processing signal into a digital signal. This signal processing circuit 31 is a video memory 3
0 and an LCD (liquid crystal) monitor 33,
It is connected via a data bus 57 to a non-volatile memory 59 and the like.

The signal processing circuit 31 transfers the processed signal to the video memory 30 and the non-volatile memory 59, and the electronic image stored in the video memory 30 is transferred to the LCD monitor 33.
Is displayed on the monitor screen 16 (see FIG. 4). When the focal length of the photographing lenses 40 and 42 is changed by operating the zoom up / down operation button 17, the CPU 6
0 instructs the signal processing circuit 31 to display an image in a range corresponding to the focal length on the LCD monitor 33. It is needless to say that, by changing the relative position between the imaging lens 66 and the area sensor 34, the range imaged by the area sensor 34 may be changed according to the focal length.

The non-volatile memory 59 is freely attachable to the camera main body, can be electrically rewritten, and retains the electronic image even when the power of the camera main body is turned off.
Used for recording electronic images. In the present embodiment, the non-volatile memory 59 stores not only digital data obtained by the signal processing circuit 31 but also characteristic data corresponding to the type of filter detected by the filter detection unit 3. The CPU 60 performs predetermined processing on the digital data obtained by the signal processing circuit 31, and uses the digital data as a photometric value in an exposure calculation at the time of film exposure.

The above-mentioned movable mirror 43 is a mirror driving circuit 5
2 and the shutter 44 is driven by a shutter drive circuit 54. When the movable mirror 43 is raised and the shutter 44 is opened, the silver halide film 4
A subject image is formed on the shutter 5, and is exposed for an exposure time (shutter speed) from opening to closing of the shutter 44. Note that this exposure control is based on the subject brightness value obtained from the signal processing circuit 31 and the film sensitivity detected by a film sensitivity detection circuit (not shown). Is calculated. The drive of the shutter 44 is controlled based on the calculated shutter speed, and the drive of the diaphragm 41 is controlled based on the calculated aperture value.

A magnetic recording layer is also formed on the silver halide film 45, and a magnetic head 46 is arranged so as to be in contact with the magnetic recording layer. The magnetic head 46 is driven by the output of the magnetic head drive circuit 55. Further, a film driving circuit 56 is provided in the camera body, and when the shooting of one frame is completed, the film 45 is wound up. Magnetic head 46 and magnetic head drive circuit 55
Is performed during this winding operation. The above information is not limited to magnetic recording,
Optical recording may be used, and the information may be stored in an IC memory built in a film cartridge or the like.

The switch input 61 includes a plurality of switches such as an operation switch (not shown) including the power switch 10, the release switch 12, and the photographing mode button 13, and a switch for detecting the operation of a mechanical mechanism.

The above-described signal processing circuit 31, strobe circuit 58, nonvolatile memory 59, CPU 60, magnetic head drive circuit 55, film drive circuit 56, shutter drive circuit 54, line sensor drive circuit 53, mirror drive circuit 52, aperture Drive circuit 51, zoom / focus drive circuit 5
0, the filter detection unit 3 is connected by the data bus 57 to exchange data. The operation of these drive circuits is controlled by the CPU 60.

FIG. 7 is an exploded perspective view showing the structure of the strobe light emitting unit 11 of the camera according to the embodiment of the present invention.
Light-emitting panel 64 for condensing and irradiating strobe light
A strobe light emitting tube 68 in which Xe gas is sealed, a reflector 63 for reflecting light emitted from the strobe light emitting tube 68,
A fixing member 85 for fixing the arc tube 68 to the reflector 63 is housed in a frame member 86 and integrated therewith. Behind the frame member 86, a trigger transformer 91 for generating a high voltage for exciting the Xe gas of the arc tube 68, and the high voltage generated by the trigger transformer 91 is transmitted to a trigger electrode of the arc tube 68. For this purpose, the wiring member 92 connected to the reflector 63 and the strobe circuit (58 in FIG. 1) of the camera main body, and the wiring member 9 serving as a control line of the trigger transformer 91
3 are arranged.

A lens 66 for forming a subject image on the area sensor 34 is provided with a
The optical path member 82 is fixed to an optical path member 82 serving as an optical path leading to the optical path 4. At the rear of the optical path member 82, an area sensor 34 housed in a clear package is arranged, and to this area sensor 34, a flexible substrate 88 for laying a signal line for control from the camera body is connected. Behind the area sensor 34, a conductive metal plate 90 is arranged. This metal plate 90 is grounded by being connected to the negative pole of the power supply of the camera via a wiring member 94. The metal plate 9
0 is for shielding the area sensor 34 or the signal line of the area sensor 34 from electromagnetic wave noise generated at the time of flash emission.

A wiring member 93 serving as a control line of the trigger transformer 91, and a wiring member (not shown) connecting the anode and cathode of the arc tube 68 and the strobe circuit 58 (see FIG. 1) of the camera body are guided by a support frame 95. It is laid along the groove 95a. The flexible substrate 88 and the wiring member 94 are laid along the guide groove 95b of the support frame 95. As described above, the wiring member 93 connected to the strobe circuit 58 is laid along the guide groove 95a, and the wiring related to the area sensor is laid along the guide groove 95b. Because the strobe works as lighting,
Electromagnetic noise is generated at the time of strobe light emission, which adversely affects the area sensor 34 or the signal line of the area sensor 34 during the operation of the area sensor. In order to avoid this as much as possible, the wiring material of the strobe and the wiring material of the area sensor are laid at a predetermined interval.

By performing black printing on the entire surface of the flexible substrate 88, unnecessary internal reflection of light is prevented, and harmful light other than image pickup light is prevented from entering the area sensor 34. In black printing, a black material may be used as a coverlay for kiban, or a similar effect can be obtained by attaching a black malt to kiban.

Next, FIG. 8 shows a modification of this embodiment.
Although FIG. 7 described above has a structure in which the strobe light emitting panel and the optical system of the area sensor are formed separately, the modification shown in FIG. 8 differs in that the strobe light emitting panel and the optical system of the area sensor are formed integrally. I do. That is, the light-emitting panel 100 is a panel in which the imaging lens 66 and the light-emitting panel 64 of FIG. 7 are integrated, and the frame member 86a also has the function of the optical path member 82 of FIG. The other parts are the same as those in FIG. 7, and the detailed description thereof will be omitted.

As described above, in this modification, since the imaging lens 66 and the optical path member 82 of FIG. 7 are integrally formed by the light emitting panel 100 and the frame member 86a, the number of parts can be reduced and the assembling can be performed. Accuracy can be improved.

Next, the first embodiment of the present invention configured as described above is described.
The operation of this embodiment will be described with reference to the flowchart shown in FIG. First, when the power switch 10 is turned on, the strobe light emitting unit 11 is mechanically popped up. Further, when the first release is pressed, a shooting subroutine of step S1 is called from a main routine (not shown). Note that the release switch 12 of the camera is 2
It is a push button with a step configuration, the first release,
Called the second release.

Next, in step S2, focus adjustment is performed. This focus adjustment is performed by calculating a drive amount up to a focusing position of the photographing lens from an interval between two images based on an output signal of the line sensor 49, and driving the photographing lens based on the calculation result. At this time, the absolute distance to the subject is also calculated based on the number of encoder pulse signals from the reference position (for example, the position at infinity) of the taking lens. next,
Step S3 for the case of performing exposure with a silver halide film
, The luminance of the subject is measured based on the output from the area sensor 34, and a proper exposure is performed by the silver halide photographing apparatus based on the measured photometric value and the film sensitivity detected by a film sensitivity detecting circuit (not shown). A shutter speed and an aperture value for obtaining the value are calculated (step S4).

Next, in step S5, it is determined whether or not the second release switch has been pressed, and if not, step S5 is repeated. On the other hand, if the second release switch has been pressed, the flow shifts to the exposure sequence of the silver halide imaging device and the imaging sequence of the electronic imaging device after step S6.

That is, first, the aperture mechanism 41 is stopped down by the aperture value calculated in step S4 (step S6).
The movable mirror 43 is retracted upward by the mirror drive circuit 52 (step S7), and the shutter 44 is controlled by the shutter drive circuit 54 so that the shutter speed value calculated in step S4 is attained. Is performed, an electronic image is captured from the area sensor 34 (step S8).

In the next step S9, it is determined whether or not the filter 1 is mounted. When the photographing filter 1 is mounted, in the next step S10, processing according to the type of the photographing filter 1 is performed in addition to normal image processing. That is, the CPU 60 operates the A / D conversion circuit 5 in the filter detection unit 3 to detect the resistance value of the resistor 2. When the photographic filter 1 is attached to the filter connection unit 4, the resistance value of the resistor 2 is detected. When the photographic filter 1 is not attached, the resistance value becomes infinite, so that it can be determined.

The detected resistance value is converted into a digital signal by the A / D conversion circuit 5 and stored in the RAM in the CPU 60. The CPU 60 refers to the filter characteristic data of the nonvolatile memory 59 according to the detected resistance value. Then, the CPU 60 processes the digital image data obtained by the signal processing circuit 31 in accordance with the referred filter characteristics, thereby obtaining an electronic image capturing effect similar to the filter effect given when capturing the silver halide film. An image is obtained (step S12). If the filter 1 is not mounted, normal image signal processing is performed in step S11.

Next, an example of image processing according to the type of the filter used as the photographing filter 1 will be described. Now, for example, it is assumed that a UV filter or a skylight filter is mounted. In this case, the CPU 60
Performs edge enhancement on image data to sharpen the image.

When a PL filter is mounted,
The CPU 60 refers to the image digital data, detects the position of the blue sky in the image based on the color component (blue), the area (relatively large), the position (upper screen), and the like, reduces the brightness of the blue sky portion, and reduces the contrast. Perform processing to increase.

When a soft focus filter is mounted, the CPU 60 performs image processing for creating a flare on the entire screen.

When the center focus filter is mounted, the CPU 60 performs low-pass filter processing for cutting off high-frequency components on the image of the peripheral portion, and performs image processing for blurring and omitting to emphasize points.

When the cross filter and the rainbow filter are mounted, the CPU 60 determines whether the scene is shining when the sun shines on the sea surface or the ground, or a point light source such as an electric light or a headlight of a night view. A luminance image is detected, and image processing for creating a light beam corresponding to a high luminance portion is performed. FIG. 10 shows such an image. The “beam of light” in FIG. 10 is created by image processing by the CPU 60.

For the red enhancer, the CPU 6
A value of 0 detects a red portion in the screen, performs a process of increasing the luminance, and enhances the red color when photographing autumn leaves.

For the green enhancer, the CPU
A unit 60 detects a green portion in the screen, performs processing for increasing the luminance, and emphasizes green when a young leaf is photographed.

Even when the filter for photographing is mounted in this manner, the image processing of digital photographing according to the filter characteristics is performed, so that the effect of the filter for silver halide photographing can be confirmed by digital photographing.

In the next step S13, the digital image is converted into an electronic image which has been converted into digital data and stored in the video memory 30.
The data is transferred and stored in the nonvolatile memory 59.

When the exposure and the capture of the electronic image are completed,
The retracted movable mirror 43 is returned to the original position (step S14), and the aperture is set to the initial position (usually an open aperture value).
(Step S15), the film drive circuit 56 winds up the film 45 by one frame, and simultaneously with the winding, the magnetic head 46 magnetically records information on a magnetic recording medium on the film (Step S16). The image stored in the video memory 30 or the nonvolatile memory 59 is read and displayed on the monitor screen 16 of the LCD monitor 33 (Step S17). Then, in step S18,
The image data is recorded in the nonvolatile memory 59.

As described above, in the present embodiment, the image signal obtained by digital photographing is signal-processed according to the characteristics of the photographing filter 1, and the same characteristics as those of the photographing filter 1 are obtained. LCD digital image
It can be displayed on the monitor screen 16 of the monitor 33. This makes it possible to determine whether or not the image intended by the photographer has been printed on the film at the time of photographing.

In the above-described embodiment, a resistor is used as information generating means for indicating the characteristics of the photographic filter, and a current is passed from the camera side to the resistor to detect the resistance value. Was detected. This method can be modified in various ways, and the information output unit may be a plurality of protrusions showing filter characteristics according to a specific pattern, and the camera may read this pattern to detect the characteristics of the photographic filter. Good. Alternatively, a method may be used in which a memory such as a ROM is provided in the photographing filter 1 and power is supplied from the camera to the memory to read out filter type data in the memory.

FIGS. 11 to 13 relate to a second embodiment of the present invention. FIG. 11 is a perspective view showing the outer shape of the conversion lens, FIG. 12 is a flowchart for explaining the operation, and FIG. It is an explanatory view for explaining. The camera of the present embodiment can be configured with the same hardware configuration as the embodiment of FIG. This embodiment corresponds to the attachment of a conversion lens, and is different only in control by the CPU 60.

As shown in FIG. 11, the taking lens barrel 30
A conversion lens 9, which is one of the optical accessories for silver halide photography, can be connected to the filter connection part 4 provided at the leading end of the lens 0.

In the embodiment configured as described above, before the focus adjustment in step S2 in FIG.
At 21, it is determined whether the conversion lens 9 is mounted. If the conversion lens 9 is not attached, the process proceeds to step S2, and a normal photographing sequence is executed. If the conversion lens 9 is mounted, the type of the conversion lens 9 is determined and stored in step S22.

The processing from the next step S2 to step S16 is the same as the operation flow in FIG. In the present embodiment, in step S23, a pixel range used for monitor display is determined according to the type (angle of view) of the conversion lens. Next, display is performed on the monitor screen 16 in step S17.

FIG. 13 shows the monitor display and the use area of the image sensor according to the use or non-use of the conversion lens. 13A shows a monitor display without a conversion lens, FIG. 13B shows a monitor display when a wide converter is used, and FIG. 13C shows a monitor display when a wide converter is used. FIG. 13D shows an area of image sensor data used for monitor display without a conversion lens, and FIG. 13E shows an area of image sensor data used for monitor display when using a wide converter. f) indicates an area of image sensor data used for monitor display when using the wide converter.

The image angle of view of the electronic image sensor area sensor 34 is set to the angle of view of the wide converter that can be mounted (see FIG. 13D). Then, the image data range of the area sensor 34 displayed on the LCD monitor 33 is changed according to the magnification of the attached conversion lens 9, that is, according to the shooting angle of view of the silver halide shooting system. In step S24, the image signal corresponding to the pixel range used for monitor display is compressed and recorded in the nonvolatile memory 59.

As described above, in this embodiment, even when a conversion lens is used, a digital captured image similar to an image captured by silver halide photography can be displayed on a monitor.

FIG. 14 is a block diagram showing a camera according to the third embodiment of the present invention. 14, the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 14, the camera according to the present embodiment has a built-in filter 300, and the filter 300 can be inserted into the optical path of the silver halide photographing optical system by the filter insertion / removal means 301. is there.

When the filter 300 is inserted, the filter insertion information is output by the filter insertion / removal means 301 to the signal processing circuit 31 that processes the image signal of the image sensor 34. The signal processing circuit 31 performs image processing according to the effect of the filter 300.

The display on the LCD monitor 33 is performed based on the image data including the effect of the filter 300, and the recording in the nonvolatile memory 59 is performed.

Further, the present embodiment is provided with mode setting switches 302 to 304 in order to cope with a case where a filter or a conversion lens which cannot be detected on the camera side is mounted. Switches 302 to 3
Reference numeral 04 is for setting a soft focus filter mode, a teleconverter mode, or a cross filter mode, respectively.

The states of the switches 302 to 304 are detected by the CPU 60, and the CPU 60 sets the soft focus filter mode, the tele converter mode, or the cross filter mode according to the states of the switches 302 to 304. The signal processing circuit 31
In a mode corresponding to these switches 302 to 304, image processing is performed on the image sensor output.

As described above, in the present embodiment, by providing a switch for setting a mode, even when a filter or a conversion lens that cannot be detected by the camera is attached, the same effect as that of the silver halide photography is obtained. It is possible to obtain a digital captured image by a photographing effect.

[Supplementary Notes] A silver halide photographing means including a first optical system for exposing a subject image to a silver halide film via the first optical system; and a second optical system for electronically capturing the subject image via the second optical system. An electronic photographing device for taking an image with an element, an image recording means for recording subject image data based on an output of the electronic image pickup element, and the image in response to insertion of an optical attachment into an optical path of the first optical system. A control unit for changing image data to be recorded by the recording unit.

2. A silver halide photographing means including a first optical system for exposing a subject image to a silver halide film via the first optical system; and a second optical system for electronically capturing the subject image via the second optical system. An electronic photographing device for photographing with an element, image recording means for recording subject image data based on an output of the electronic image pickup element, and detecting means for detecting attachment of a silver halide photographing optical accessory to the first optical system. And a control means for changing image data to be recorded by the image recording means when the mounting of the optical accessory for photographing silver halide is detected by the detection means.

3. The optical accessories for silver halide photography are
3. The camera according to claim 2, wherein the camera is a silver halide photography filter or a silver halide photography conversion lens.

4. 3. The camera according to claim 2, wherein the detection means electrically detects the optical accessory for photographing silver halide.

5. 3. The camera according to claim 1, wherein a display of the monitor unit is changed by correcting an output of the control unit and the imaging element.

[0086]

According to the present invention, digital photography can be performed according to the mounted silver halide photography filter and conversion lens. Therefore, a digital image consistent with silver halide photography can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a camera according to a first embodiment of the present invention.

FIG. 2 is an exemplary perspective view showing the appearance of the camera according to the first embodiment;

FIG. 3 is an exemplary perspective view showing the appearance of the camera according to the first embodiment;

FIG. 4 is an exemplary perspective view showing the appearance of the camera according to the first embodiment;

FIG. 5 is a block diagram showing a specific circuit configuration of a filter detection unit 3 and a circuit configuration of a photographing filter 1 in FIG. 1;

FIG. 6 is a perspective view showing the photographing filter 1 and the filter connection unit 4 in detail.

FIG. 7 is an exploded perspective view showing a configuration of a strobe light emitting unit 11 of the camera according to the embodiment of the present invention.

FIG. 8 is an exploded perspective view showing a modification of FIG. 7;

FIG. 9 is a flowchart for explaining the operation of the first embodiment.

FIG. 10 is an explanatory diagram for explaining the operation of the first embodiment. .

FIG. 11 is a perspective view showing the external shape of a conversion lens used in a camera according to a second embodiment of the present invention.

FIG. 12 is a flowchart illustrating the operation of the second embodiment.

FIG. 13 is an explanatory diagram for explaining the operation of the second embodiment.

FIG. 14 is a block diagram showing a camera according to a third embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Photographing filter, 3 ... Filter detection part, 31 ...
Signal processing circuit, 33 LCD monitor, 43 movable mirror, 44 shutter, 45 film, 57 data bus, 58 flash control circuit, 59 nonvolatile memory,
60: CPU, 67: Finder

Claims (3)

[Claims] 1. A silver halide photographing means which includes a first optical system and exposes a subject image to a silver halide film via the first optical system, and a second optical system which includes a second optical system An electronic photographing apparatus that captures an image of a subject with an electronic imaging device; a monitor that displays the subject image based on the output of the electronic imaging device; And a control means for changing the display of the monitor means. 2. A silver halide photographing means including a first optical system, and exposing a subject image to a silver halide film via the first optical system; and a second optical system, comprising a second optical system. An electronic photographing device for photographing a subject image by an electronic imaging device; a monitor for displaying the subject image based on an output of the electronic imaging device; and detecting attachment of an optical accessory for silver halide photography to the first optical system. A camera comprising: detecting means; and control means for changing a display on the monitor means when the mounting of the optical accessory for silver halide photography is detected by the detecting means. 3. The camera according to claim 2, wherein the optical accessory for silver halide photography is a filter for silver halide photography or a conversion lens for silver halide photography.