WO2007148565A1 - カメラシステム - Google Patents
カメラシステム Download PDFInfo
- Publication number
- WO2007148565A1 WO2007148565A1 PCT/JP2007/061835 JP2007061835W WO2007148565A1 WO 2007148565 A1 WO2007148565 A1 WO 2007148565A1 JP 2007061835 W JP2007061835 W JP 2007061835W WO 2007148565 A1 WO2007148565 A1 WO 2007148565A1
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- WIPO (PCT)
- Prior art keywords
- image
- aperture
- unit
- mode
- aperture value
- Prior art date
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/02—Control effected by setting a graduated member on the camera in accordance with indication or reading afforded by a light meter, which may be either separate from or built into camera body
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/18—Signals indicating condition of a camera member or suitability of light
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/617—Upgrading or updating of programs or applications for camera control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
- H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
- H04N23/633—Control of cameras or camera modules by using electronic viewfinders for displaying additional information relating to control or operation of the camera
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
- H04N23/673—Focus control based on electronic image sensor signals based on contrast or high frequency components of image signals, e.g. hill climbing method
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2101/00—Still video cameras
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N2201/3225—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
- H04N2201/3252—Image capture parameters, e.g. resolution, illumination conditions, orientation of the image capture device
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
- H04N23/672—Focus control based on electronic image sensor signals based on the phase difference signals
Definitions
- the present invention relates to a camera system, and more particularly to a camera system used for a digital camera having an aperture value changing function.
- the imaging optical system when used for photographing, the reflecting mirror is retracted from the photographing optical path.
- the optical path for the finder is switched to the optical path for photographing, and when the photographing is finished, the reflecting mirror returns instantly to a fixed position.
- This method is the same for conventional silver halide cameras and digital cameras as long as they are single-lens reflex cameras.
- Patent Document 1 JP 2001-125173 A
- this type of camera system has an aperture value changing function.
- the monitor shooting mode real-time images taken sequentially with the set aperture value are displayed on the display device. For this reason, it is possible to check the depth of field that changes according to the aperture value via the display device.
- the aperture value increases, the amount of light incident on the image sensor decreases.
- the image displayed on the display device becomes dark.
- it may be difficult to confirm the depth of field.
- An object of the present invention is to improve convenience when checking a depth of field in a camera system having an aperture value changing function.
- a camera system is a camera system for photographing a subject, and includes an imaging optical system, an imaging unit, an aperture adjustment unit, a display unit, and an image adjustment unit.
- the imaging optical system forms an optical image of the subject.
- the imaging unit converts the optical image into an image signal and acquires an image of the subject.
- the aperture adjustment unit can adjust the aperture value of the imaging optical system.
- the display unit displays the image.
- the image adjusting unit adjusts the brightness of the image displayed on the display unit according to the aperture value.
- the brightness of the image is adjusted by the image adjustment unit in accordance with the aperture value.
- the brightness of the displayed image regardless of the aperture value can be kept at a level where it can be easily confirmed.
- a photographer who is not affected by the difference in image brightness due to the difference in aperture value can easily check the depth of field of the image.
- a camera system according to a second invention is the camera system according to the first invention, wherein the image adjusting unit amplifies the image signal in accordance with the aperture value.
- the image adjustment unit amplifies the image signal based on information about a relationship between the aperture value and the amplification factor of the image signal.
- the camera system according to a fourth aspect of the present invention is the camera system according to the third aspect of the present invention, further comprising an aperture value input unit capable of inputting an aperture value.
- the display unit can display the reference image and the comparative image side by side.
- the reference image is an image acquired at a reference aperture value set in advance by the control unit.
- the comparative image is an image acquired with the set aperture value set in the aperture value input unit.
- a camera system according to a fifth invention is the camera system according to the fourth invention, further comprising an operation unit capable of inputting information from outside and an image recording unit for recording an image.
- the reference image and the comparison image are recorded based on the input information of the operation unit force. Recorded in the department.
- FIG. 6 (a) A developed view of the diaphragm ring that also shows the radial outer force, (b) A developed view of the diaphragm ring that is seen from the radially inner side
- FIG. 7 Cross-sectional view showing the joint between the aperture ring and aperture linear sensor
- FIG. 14 Flow chart of the narrowing mode (second embodiment)
- Imaging sensor imaging unit
- Aperture ring (Aperture value setting section) Aperture linear sensor
- Quick return mirror control unit Quick return mirror drive motor
- Analog signal processing unit 51 AGC unit (image adjustment unit)
- FIG. 1 is an overall configuration diagram of the camera system 100.
- FIG. 2 is a control block diagram of the camera body 1.
- FIG. 3 is a control block diagram of the interchangeable lens unit 2.
- the camera system 100 is a system used for an interchangeable lens type single-lens reflex digital camera. As shown in FIG. 1, the camera system 100 mainly includes a camera body 1, an interchangeable lens unit 2 that is detachably attached to the camera body 1, and a force.
- the replacement lens unit 2 forms an optical image of the subject.
- the camera body 1 converts the optical image formed by the interchangeable lens unit 2 into an electrical signal, and records image data and displays an image.
- the interchangeable lens unit 2 mainly adjusts the focus of the imaging optical system L, the zoom adjustment unit 24 that adjusts the zoom magnification of the imaging optical system L, and the imaging optical system L. It has a focus adjustment unit 22, an aperture adjustment unit 29 that adjusts the aperture value of the imaging optical system L (actual F value that changes depending on the aperture of the aperture), and a lens microcomputer 20 as a lens control unit. .
- the imaging optical system L connects the subject image to the imaging sensor 11 of the camera body 1.
- the lens microcomputer 20 is a unit for controlling various sequences of the interchangeable lens unit 2.
- the lens microcomputer 20 stores various lens information related to the interchangeable lens unit 2.
- the lens microcomputer 20 includes a zoom control unit 62, a focus control unit 26, and an aperture stop. Bidirectional communication with the control unit 27 is possible.
- the zoom adjustment unit 24 mainly includes a zoom linear sensor 60, an A ZD conversion unit 61, and a zoom control unit 62.
- the zoom control unit 62 can receive a signal from the zoom linear sensor 60 via the AZD conversion unit 61.
- the zoom control unit 62 converts the rotation angle of the zoom ring 38 detected by the zoom linear sensor 60 into focal length information of the imaging optical system L.
- the zoom control unit 62 transmits the focal length information to the lens microcomputer 20.
- the focus adjustment unit 22 mainly includes a focus lens group 25 and a focus control unit 26 that controls the operation of the focus lens group 25.
- the force control unit 26 can receive a signal from the focus linear sensor 63 and can transmit a signal to the focus drive motor 65 via the AZD conversion unit 64.
- the focus sensor 63 detects the rotation angle of the focus ring 39.
- the A / D converter 64 digitizes the rotation angle information detected by the focus linear sensor 63.
- the focus control unit 26 converts the rotation angle information of the focus ring 39 digitalized by the AZD conversion unit 64 into object point distance information.
- the focus control unit 26 transmits object distance information to the lens microcomputer 20 based on a command from the lens microcomputer 20.
- the focus control unit 26 drives the focus drive motor 65 based on the control signal from the lens microcomputer 20! /. In this way, the focus adjustment unit 22 performs focus adjustment.
- the aperture adjusting unit 29 mainly includes an aperture unit 28, an aperture control unit 27 that controls the operation of the aperture unit 28, and an aperture ring 40 for setting an aperture value.
- the aperture unit 28 includes an aperture blade (not shown) and an aperture drive motor 28b for driving the aperture blade.
- the aperture controller 27 detects the aperture value set by the aperture ring 40.
- the aperture linear sensor 41 shown in FIG. 3 detects the rotation angle of the aperture ring 40.
- the AZD converter 67 digitally inputs the rotation angle detected by the aperture ring 40.
- the aperture control unit 27 can receive a signal from the aperture linear sensor 41 via the AZD conversion unit 67, and converts the rotation angle information of the aperture ring 40 digitized by the A / D conversion unit 67 into aperture value information. .
- the aperture control unit 27 transmits aperture value information to the lens microcomputer 20 based on a command from the lens microcomputer 20 and drives the aperture drive motor 28b based on a control signal from the lens microcomputer 20.
- the aperture drive motor 28b drives the aperture blades according to the aperture value set by the aperture ring 40 by a control signal from the aperture controller 27. In this way, the aperture value of the imaging optical system L is adjusted by the aperture adjusting unit 29.
- the interchangeable lens unit 2 further includes a lens mount 21, which is detachably attached to a body mount 23 provided on the front surface of the camera body 1 via the lens mount 21.
- the interchangeable lens unit 2 has an electric section (not shown) provided on the lens mount 21.
- the camera body 1 has an electrical section (not shown) provided on the body mount 23. Through these electrical sections, lens information and various control signals are transmitted and received between a body microcomputer 12 and a lens microcomputer 20 described later.
- the camera body 1 mainly includes a quick return mirror 4, a finder optical system 19, a focus detection unit 5, a shutter unit 10, an imaging unit 45, and a main body control unit.
- the body microcomputer 12 controls various sequences. As a focus detection method of the focus detection unit 5, for example, a phase difference detection method is adopted.
- a quick return mirror control unit 43 and a quick return mirror drive motor 44 are provided to drive the quick return mirror 4.
- the quitter return mirror control unit 43 drives the quick return mirror drive motor 44 based on the control signal from the body microcomputer 12.
- a shutter control unit 14 and a shutter drive motor 10a are provided in order to drive the shutter unit 10.
- the shutter control unit 14 drives a shutter drive motor 10a (not shown) based on a control signal from the body microcomputer 12.
- the body microcomputer 12 can transmit signals to the shutter control unit 14 and the quick return mirror control unit 43.
- the imaging unit 45 mainly includes an imaging sensor 11 and an imaging sensor control unit 13 that controls the operation of the imaging sensor 11.
- the image sensor 11 is, for example, a CCD (Charge Coupled Device).
- the imaging sensor 11 is formed by the imaging optical system L of the interchangeable lens unit 2. The optical image is converted into an image signal.
- the image signal output from the image sensor 11 is processed in the order of an analog signal processing unit 51, an AZD conversion unit 52, a digital signal processing unit 53, a nother memory 54, and an image compression unit 56.
- the image signal is transmitted from the imaging sensor 11 to the analog signal processing unit 51.
- the analog signal processing unit 51 performs analog signal processing such as gamma processing on the image signal output from the imaging sensor 11.
- the analog signal processing unit 51 includes an AGC (Auto Gain Control) unit 59 as an image adjustment unit that corrects the level (gain) of the analog image signal.
- the AGC unit 59 has an amplifier function that compensates for an insufficient level of the image signal when proper exposure cannot be obtained in the narrowing mode described later.
- the analog image signal is amplified with an appropriate amplification factor according to the set aperture value so as to match the input voltage range of the AZD converter 52 described later.
- the analog signal processing unit 51 uses the AGC unit 59 to generate an image with a brightness suitable for display on the liquid crystal monitor 16 described later with respect to an actual aperture image captured in the aperture mode described later. Perform processing to change the gain so that As a result, even when the aperture value is large, the image displayed on the liquid crystal monitor 16 becomes brighter and it becomes easier to observe the actual aperture image.
- the image signal that has undergone the analog signal processing is transmitted from the analog signal processing unit 51 to the AZD conversion unit 52.
- the AZD converter 52 converts the analog image signal output from the analog signal processor 51 into a digital signal.
- the digital signal processing unit 53 performs digital signal processing such as noise removal and contour enhancement on the image signal converted into a digital signal by the AZD conversion unit 52.
- the image signal that has been subjected to the digital signal processing is transmitted from the digital signal processing unit 53 to the buffer memory 54.
- the buffer memory 54 stores the image signal processed by the digital signal processing unit 53.
- the buffer memory 54 is, for example, a RAM (Random Access Memory).
- the image signal stored in the nother memory 54 is transmitted from the buffer memory 54 to the image compression unit 56 in accordance with a command from the image recording control unit 17.
- the image compression unit 56 compresses the image signal.
- the data size of the signal is smaller than the data size of the original image signal.
- the JPEG Joint Photographic Experts Group
- the compressed image data is transmitted from the image compression unit 56 to the image recording unit 18 and the liquid crystal monitor 16.
- an image recording control unit 17 and an image recording unit 18 are provided.
- the image recording control unit 17 causes the image recording unit 18 to read and write image data on, for example, a card-type recording medium (not shown).
- the image recording control unit 17 controls the image recording unit 18 based on a control signal from the body microcomputer 12.
- the image recording unit 18 records the image data in the internal memory and Z or a recording medium based on an instruction from the image recording control unit 17.
- the information stored together with the image data is, for example, the date and time when the image was taken, focal length information, shutter speed information, aperture value information, and shooting mode information.
- An image display unit 46 and a liquid crystal monitor 16 are provided to display an image of the subject.
- the image display control unit 15 controls the liquid crystal monitor 16 based on a control signal from the body microcomputer 12. Specifically, the image display control unit 15 reads out the image data acquired by the imaging sensor 11, performs a predetermined process on the image data, and then displays the image on the liquid crystal monitor 16.
- the liquid crystal monitor 16 displays an image signal as a visible image and various kinds of information based on a command from the image display control unit 15.
- the displayed information includes, for example, focal length information, shutter speed information, aperture value information, shooting mode information, focus state information, presence / absence of the aperture ring 40 of the interchangeable lens unit 2, and aperture value setting steps and settings. Width and the like.
- the liquid crystal monitor 16 displays a setting screen to be set by the photographer in a predetermined shooting and playback mode based on a command from the image display control unit 15.
- the body microcomputer 12 is capable of bidirectional communication with the image recording control unit 17, the image display control unit 15, and the digital signal processing unit 53.
- the body microcomputer 12 has a memory 68 for storing various information and signals.
- FIG. FIG. 5 is a rear view of the camera body 1.
- the camera body 1 is provided with a release button 30 and a shutter speed setting dial 31.
- the release button 30 and the shutter speed setting dial 31 are provided on the upper surface of the camera body 1.
- the release button 30 transmits the shutter operation timing to the body microcomputer 12.
- the shutter speed setting dial 31 is an operation member for setting the shutter speed.
- the shutter speed setting dial 31 transmits the set shutter speed information and shutter mode information. The shutter speed can be adjusted by rotating the shutter speed setting dial 31.
- the shutter speed setting dial 31 has an auto position in which the shutter speed is automatically set.
- a filter mount 37 is provided on the subject side of the interchangeable lens unit 2.
- a zoom ring 38, a focus ring 39, and an aperture ring 40 are arranged in this order from the filter mount 37 toward the camera body 1 side (Z-axis direction negative side).
- the zoom ring 38, the focus ring 39, and the aperture ring 40 are all cylindrical rotating operation members, and are disposed on the outer peripheral surface of the interchangeable lens unit 2 so as to be rotatable.
- the aperture ring 40 is an example of an aperture value setting unit.
- the back of the camera body 1 is provided with a power button 70, shooting Z playback mode switching lever 71, MENU button 72, cross control key 73, SET button 74, and narrowing mode button 76.
- a liquid crystal monitor 16 is provided on the back of the camera body 1 (the surface on the photographer side, the surface on the negative side in the Z-axis direction).
- the power button 70 is an operation member for turning on and off the power of the camera system 100.
- the shooting Z playback mode switching lever 71 is an operation member that switches between shooting mode and playback mode.
- the shooting mode is a mode for newly shooting a subject into an image signal in the camera system 100.
- the playback mode is a mode for displaying image data already captured and stored in the camera system 100.
- the power button 70 is switched ON, and the shooting Z playback mode switching lever 71 is switched to the shooting mode.
- the power is turned on, and the liquid crystal monitor 16 is displayed based on the command of the visible image force image display control unit 15 of the subject converted into an electrical image signal by the imaging sensor 11.
- the MENU button 72 is an operation member for displaying various operation menus on the liquid crystal monitor 16.
- a setting menu screen is displayed on the liquid crystal monitor 16 based on a command from the image display control unit 15.
- the setting menu screen displays icons for setting items that can be changed by the photographer in the shooting mode.
- the cross operation key 73 is an operation member for selecting display items of various operation menus, and has up, down, left and right arrow keys.
- the SET button 74 is an operation member for confirming display items of various operation menus.
- the narrowing mode button 76 is a button for shifting to the narrowing mode described later.
- the body microcomputer 12 includes a release button 30, a shutter speed setting dial 31, a shooting Z playback mode switching lever 71, a MENU button 72, a cross key 73, a SET button 74, and a shooting mode switching button 75.
- the signal can be received from the narrowing mode button 76 and force.
- FIGS. Fig. 6 (a) is a developed view of the aperture ring 40 as viewed from the radially outer side
- Fig. 6 (b) is an expanded view of the aperture ring as viewed from the radially inner side.
- FIG. 7 is a cross-sectional view of a coupling portion between the aperture ring 40 and the aperture linear sensor 41.
- FIG. 8 is a circuit configuration diagram of the aperture linear sensor 41.
- FIG. 9 is a graph showing the relationship between the rotation angle of the aperture ring 40 and the output value of the aperture reduction sensor 41.
- the aperture value is displayed on the outer peripheral surface of the aperture ring 40.
- the display area for the aperture value is divided into two areas. Specifically, as shown in Fig. 6 (a), the display part for each AV (Aperture Value) from “2" to "11" corresponds to the manual mode. As shown in Fig. 6 (a), the display part of “A” corresponds to the auto mode.
- a linear cam groove 42 is formed on the inner peripheral portion of the aperture ring 40.
- the aperture linear sensor 41 has a cylindrical slider 41 a that protrudes radially outward of the aperture ring 40.
- the aperture linear sensor The slider 41 a of the sensor 41 is inserted into a cam groove 42 formed in the aperture ring 40.
- the slider 41a moves along the cam groove 42 in the direction along the optical axis (Z-axis direction).
- the aperture linear sensor 41 is configured by a circuit having a variable resistor.
- a terminal T2 shown in FIG. 8 (a) is connected to the slider 41a, and terminals T2 and T3 are connected to both ends 41b and 41c of the aperture linear sensor shown in FIG.
- a predetermined voltage is applied between the terminals T1 and T3.
- the slider 41a of the aperture linear sensor 41 is positioned at the position P of the cam groove 42. It's above.
- the output value (output voltage value) of the aperture linear sensor 41 is P, as shown in FIG. That is, when the position where the character “2” of the aperture ring 40 is displayed matches the position of the index 33, the output voltage value of the aperture linear sensor 41 is P ′.
- the output values (output voltage values) of the aperture linear sensor 41 are Q,, S, Ding, U, and V, respectively.
- the position where the characters “2.8”, “4”, “5.6”, “8”, “11” and “A” on the aperture ring 40 are displayed matches the position of the index 33.
- the output voltage value of the aperture linear sensor 41 is Q, R, S, T, U, and V.
- the aperture linear sensor 41 has an output (output voltage value) corresponding to the rotation angle of the aperture ring 40 on a one-to-one basis, and the voltage value of the aperture value signal corresponding to the rotation angle of the aperture ring 40 is changed. Output as Therefore, based on the output from the aperture linear sensor 41, the rotation angle of the aperture ring 40 can be detected.
- FIG. 10 is a diagram for explaining the viewfinder shooting mode.
- Figure 11 illustrates the monitor shooting mode FIG.
- This camera system 100 has two shooting modes.
- One shooting mode is a viewfinder shooting mode in which a photographer takes a picture while observing the viewfinder eyepiece window 9, and is a normal shooting mode in a conventional single-lens reflex camera.
- the other shooting mode is a monitor shooting mode in which the liquid crystal monitor 16 is used for shooting.
- the quick return mirror 4 is arranged at a predetermined position on the optical path X. For this reason, the strong light of the subject that has passed through the interchangeable lens unit 2 is split into two light beams by the main mirror 4a of the quick return mirror 4. The reflected light beam is guided to the finder optical system 19. The transmitted light beam is reflected by a sub-mirror 4b provided on the back side of the quick return mirror 4 and used as an AF (Automatic Focus) light beam of the focus detection unit 5.
- AF Automatic Focus
- the light beam reflected by the main mirror 4a is imaged on the finder screen 6.
- the subject image formed on the finder screen 6 can be observed from the viewfinder eyepiece window 9 via the pentaprism 7 and the eyepiece lens 8.
- the photographer can observe the subject image from the finder eyepiece window 9.
- the quick return mirror 4 is flipped up out of the optical path X, and the shutter unit 10 is opened to form a subject image on the imaging surface of the imaging sensor 11. As a result, an image of the subject can be acquired.
- the body microcomputer 12 of the camera body 1, the lens microcomputer 20 of the interchangeable lens unit 2, and various units are activated by power supply.
- the body microcomputer 12 receives various lens information from the lens microcomputer 20 via the lens mount 21 and the body mount 23.
- the lens information is stored in the memory 68 built in the body microcomputer 12.
- a defocus amount (hereinafter referred to as “Df amount”) is acquired from the focus detection unit 5, and the Df amount is transmitted to the body microcomputer 12.
- the focus lens group 25 is driven according to the amount of Df. Specifically, the focus lens group 25 is transferred from the body microcomputer 12 to the lens microcomputer 20. A drive command is sent.
- the focus lens group 25 is driven by the lens microcomputer 20 through the focus control unit 26 by the amount of Df. If focus detection and driving of the focus lens group 25 are repeated, the amount of Df decreases.
- the body microcomputer 12 determines that the focus is in focus and stops driving the focus lens group 25.
- an aperture adjustment command is transmitted from the body microcomputer 12 to the lens microcomputer 20.
- the aperture value is calculated by the body microcomputer 12 based on an output from a photometric sensor (not shown).
- the aperture of the diaphragm unit 28 is adjusted by the lens microcomputer 20 via the diaphragm controller 27.
- a command to retract the quick return mirror 4 from the optical path X is transmitted from the body microcomputer 12 to the quick return mirror control unit 43.
- the image sensor 11 is driven by the image sensor controller 13, and the shirt unit 10 is driven by the shutter controller 14.
- the shutter control unit 14 keeps the shutter unit 10 open for the time of the shutter speed calculated based on the output from the photometric sensor (not shown), and the image sensor 11 is exposed.
- the image signal output from the image sensor 11 is subjected to predetermined image processing, and the captured image is displayed on the liquid crystal monitor 16. Further, the image data is recorded on the storage medium via the image recording unit 18.
- the quick return mirror 4 and shirt unit 10 are reset to their initial positions.
- a command is sent from the body microcomputer 12 to the lens microcomputer 20 to reset the aperture unit 28 to the open position.
- the lens microcomputer 20 issues a reset command to each unit.
- reset completion information is transmitted from the lens microcomputer 20 to the body microcomputer 12.
- the body microcomputer 12 confirms that the release button 30 has not been pressed, and the photographing sequence ends.
- the shooting mode switching button 75 when shooting in the monitor shooting mode, the shooting mode switching button 75 is operated, and the shooting mode shifts to the monitor shooting mode. Specifically, the quick return mirror control motor 43 drives the quick return mirror 44 by the quick return mirror control unit 43, and the quick return mirror 4 is retracted out of the optical path X. As a result, the imaging optical system The subject image formed by L enters the image sensor 11. An image signal is output from the imaging sensor 11 and subjected to predetermined image processing, and then the captured image is displayed on the liquid crystal monitor 16. As described above, in the monitor photographing mode, the photographer can observe the subject through the viewfinder eyepiece window 9 by displaying the real-time image of the subject on the liquid crystal monitor 16.
- the shooting operation when the release button 30 is fully pressed is the same as in the finder shooting mode described above. After the exposure is completed, the quick return mirror 4 is held in a state where the upward force on the optical path X is also retracted. Thereby, it is possible to continue the monitor photographing mode.
- the shooting mode switching button 75 When the shooting mode switching button 75 is operated, the monitor shooting mode is canceled and the viewfinder shooting mode is switched. In this case, the quick return mirror 4 is returned to a predetermined position on the optical path X. Also, the quitter return mirror 4 is returned to a predetermined position on the optical path X even when the power of the camera system 100 is switched off.
- the camera system 100 can use the monitor photographing mode, so that it is very easy to use for beginners who are unfamiliar with digital camera photographing.
- the camera system 100 has a program shooting mode, a shutter speed priority shooting mode, an aperture priority mode, and a manual shooting mode as exposure setting modes.
- the program shooting mode is a mode in which exposure is automatically set for the normal shooting area.
- the shutter speed priority mode is a mode for manually setting the shutter speed.
- the aperture priority mode is a mode for manually setting the aperture value.
- Manual shooting mode is In this mode, both the shutter speed and the aperture value are set manually.
- These four exposure setting modes can be selected by the aperture ring 40 and the shutter speed setting dial 31. Specifically, for example, if the letter “A” on the aperture ring 40 matches the index 33 and the shutter speed is set to auto with the shutter speed setting dial 31, the program shooting mode is selected. The When the letter “A” of the aperture ring 40 matches the index 33 and the shutter speed is set to manual with the shutter speed setting dial 31, the shutter speed priority shooting mode is selected. If the difference between the characters “2” to “11” on the aperture ring 40 matches the index 33 and the shutter speed is set to auto with the shutter speed setting dial 31, the aperture priority shooting mode is set. Selected. When the difference between the characters “2” to “11” on the aperture ring 40 matches the index 33 and the shutter speed is set to manual with the shutter speed setting dial 31, the The shooting mode is selected.
- the program shooting mode and the shutter speed priority shooting mode are collectively referred to as an auto aperture mode.
- aperture priority shooting mode and manual shooting mode are collectively referred to as manual aperture mode.
- the aperture linear sensor 41 outputs a signal corresponding to the rotation angle of the aperture ring 40 to the aperture controller 27.
- the aperture control unit 27 sets the exposure setting mode to auto based on the signal received from the aperture linear sensor 41. It is determined that the aperture mode is set.
- the judgment result in the aperture control unit 27 is transmitted to the lens microcomputer 20 and the body microcomputer 12. At this time, transmission to the body microcomputer 12 is performed, for example, via inter-microcomputer communication between the lens microcomputer 20 and the body microcomputer 12.
- the shutter speed setting dial 31 outputs a signal corresponding to the rotation angle to the body microcomputer 12. Based on the determination result received from the aperture controller 27 and the signal from the shutter speed setting dial 31, the body microcomputer 12 determines that the exposure setting mode is the auto aperture mode. A command is transmitted from the body microcomputer 12 to the digital signal processing unit 53, and an image signal is transmitted to the body microcomputer 12 by the digital signal processing unit 53 at a predetermined timing. Based on the image signal transmitted from the digital signal processing unit 53, the exposure value is calculated by the body microcomputer 12.
- the exposure setting mode is the program shooting mode
- the body microcomputer 12 determines an appropriate combination of an adjustable aperture value, shutter speed, power aperture value, and shutter speed.
- the exposure setting mode is the shutter speed priority shooting mode
- the body microcomputer 12 calculates an appropriate aperture value for the set shutter speed.
- a control signal is generated by the body microcomputer 12 based on the calculation result. This control signal is transmitted from the body microcomputer 12 to the aperture controller 27 via the lens microcomputer 20.
- the exposure setting mode is the program shooting mode
- a control signal based on the calculated shutter speed is transmitted from the body microcomputer 12 to the shutter control unit 14.
- the exposure setting mode is the shutter speed priority shooting mode
- the shutter speed set with the shutter speed setting dial 31 is transmitted from the body microcomputer 12 to the shirt control unit 14.
- a control signal is transmitted from the body microcomputer 12 to the image display control unit 15. Based on this control signal, the image display control unit 15 drives the liquid crystal monitor 16. Specifically, when the exposure setting mode is the program shooting mode, the image display control unit 15 displays on the liquid crystal monitor 16 that the exposure setting mode is the program shooting mode. When the exposure setting mode is the shutter speed priority mode, the image display control unit 15 displays on the liquid crystal monitor 16 that the exposure setting mode is the shutter speed priority mode.
- a drive signal for driving the aperture drive motor 28 b is generated by the aperture control unit 27.
- the diaphragm drive motor 28b is driven based on this drive signal, and the diaphragm blades of the diaphragm unit 28 are driven by the diaphragm drive motor 28b.
- the shutter control unit 14 Based on the control signal from the body microcomputer 12, the shutter control unit 14 generates a drive signal for driving the shutter drive motor 10a. Based on this drive signal The shutter drive motor 10a is driven, and the shirt unit 10 is driven by the shutter drive motor 10a.
- the camera system 100 performs exposure setting in the auto iris mode. After the release button 30 is operated, the above operations are executed instantly.
- the image recording unit 18 records the image signal in the internal memory and Z or the recording medium based on the command of the image recording control unit 17.
- the exposure setting mode is the program setting mode
- information indicating that the exposure setting mode is the program shooting mode is stored in the internal memory and Z or the recording medium together with the image signal based on the command of the image recording control unit 17.
- the exposure setting mode is the shutter priority mode
- information indicating that the exposure setting mode is the shutter speed priority mode is recorded in the internal memory and / or recording medium together with the image signal based on a command from the image recording control unit 17. Is done.
- the aperture control unit 27 receives from the aperture linear sensor 41 when the release button 30 is operated. Based on the signal, it is determined that the exposure setting mode is the manual aperture mode. The result of determination by the aperture control unit 27 is transmitted to the lens microcomputer 20.
- the shutter speed setting dial 31 outputs a signal corresponding to the rotation angle to the body microcomputer 12. Based on the determination result received from the aperture control unit 27 and the signal from the shutter speed setting dial 31, the body microcomputer 12 determines that the exposure setting mode is the manual aperture mode.
- the lens microcomputer 20 requests the aperture value information in which the rotational angle force of the aperture ring 40 is also detected from the aperture controller 27. Based on a command from the lens microcomputer 20, the rotation angle force of the aperture ring 40 is also detected and transmitted from the aperture control unit 27 to the lens microcomputer 20 and the body microcomputer 12.
- the exposure setting mode is the aperture priority shooting mode
- a command is transmitted from the body microcomputer 12 to the digital signal processing unit 53, and an image signal is transmitted from the digital signal processing unit 53 to the body microcomputer 12 at a predetermined timing.
- the exposure setting mode is the aperture priority shooting mode
- the body microcomputer 12 calculates the shutter speed based on the image signal.
- the exposure setting mode is aperture priority shooting mode
- the body microcomputer 12 calculates an appropriate shutter speed for the detected aperture value.
- the body microcomputer 12 When the exposure setting mode is the aperture priority shooting mode, the body microcomputer 12 generates a control signal based on the calculation result.
- a control signal based on the calculated shutter speed is transmitted from the body microcomputer 12 to the shutter control unit 14.
- the shutter speed set by the shutter speed setting dial 31 is transmitted to the shutter control unit 14 by the body microcomputer 12.
- a control signal is transmitted from the body microcomputer 12 to the image display control unit 15.
- the image display control unit 15 drives the liquid crystal monitor 16. Specifically, when the exposure setting mode is the aperture priority shooting mode, the image display control unit 15 displays on the liquid crystal monitor 16 that the exposure setting mode is the aperture priority shooting mode.
- the image display control unit 15 displays on the liquid crystal monitor 16 that the exposure setting mode is the manual shooting mode.
- a drive signal for driving the aperture drive motor 28 b is generated by the aperture control unit 27. Based on this drive signal, the aperture drive motor 28b is driven, and the aperture blades of the aperture unit 28 are driven by the aperture drive motor 28b.
- the shutter control unit 14 Based on the control signal from the body microcomputer 12, the shutter control unit 14 generates a drive signal for driving the shutter drive motor 10a. Based on this drive signal, the shutter drive motor 1 Oa is driven by V, and the shirt unit 10 is driven by the shutter drive motor 1 Oa.
- the camera system 100 is set for exposure in the manual aperture mode. After the release button 30 is operated, the above operations are executed instantly.
- the image recording unit 18 When shooting is completed, a control signal is transmitted from the body microcomputer 12 to the image recording control unit 17. As a result, the image recording unit 18 records the image signal in the internal memory and Z or the recording medium based on the command of the image recording control unit 17.
- the exposure setting mode is the aperture priority mode
- the image recording unit 18 informs the internal memory and Z or the recording medium together with the image signal that the exposure setting mode is the aperture priority mode based on the command of the image recording control unit 17. To be recorded.
- the exposure setting mode is the manual shooting mode
- information indicating that the exposure setting mode is the manual shooting mode is sent to the internal memory and Z or Recorded on a recording medium.
- the narrow-down mode confirmation of the depth of field is performed via the liquid crystal monitor 16.
- the shooting mode automatically shifts to the monitor shooting mode.
- a real-time image corresponding to the actual aperture value in the aperture unit 28 is displayed on the liquid crystal monitor 16.
- the depth of field can be easily confirmed via the liquid crystal monitor 16.
- the lens microcomputer 20 sends the aperture value information detected based on the rotation angle of the aperture ring 40 to the aperture controller 27. Request.
- aperture value information in which the rotational angular force of the aperture ring 40 is also detected is transmitted to the lens microcomputer 20 and the body microcomputer 12 by the aperture controller 27.
- a drive signal for driving the aperture drive motor 28 b is generated by the aperture control unit 27. Based on this drive signal, the aperture drive motor 28b is driven, and the aperture blades of the aperture unit 28 are driven by the aperture drive motor 28b.
- FIG. 12 is a flowchart of the narrow-down mode.
- Fig. 13 (a) is an example of an actual aperture image in the case of aperture value force.
- Fig. 13 (b) is an example of an actual aperture image in the case of aperture value force.
- the body microcomputer determines whether or not the narrowing mode button 76 is pressed. Judged by 12 (SI). When the narrowing mode button 76 is pressed, the mode is switched to the narrowing mode (S2). As shown in FIG. 11, in the narrow-down mode, the quick return mirror drive motor 44 is driven by the quick return mirror control unit 43 and the quick return mirror 4 is retracted out of the optical path X. After the quick return mirror 4 is retracted, the image sensor 11 starts operating.
- the real-time image obtained by the imaging sensor 11 is displayed on the liquid crystal monitor 16 (S3).
- the aperture information based on the rotation angle of the aperture ring 40 is detected by the aperture controller 27 based on a command from the lens microcomputer 20 (S4, S5).
- a drive signal for driving the aperture drive motor 28b is generated by the aperture control unit 27, and the aperture blade of the aperture unit 28 is driven by the aperture drive motor 28b (S6 ).
- the aperture value of the imaging optical system L is changed to the aperture value set by the aperture ring 40.
- a real time image at the aperture value F8 is displayed on the liquid crystal monitor 16 as shown in FIG.
- the aperture value F8 is displayed on the upper right of the image on the liquid crystal monitor 16.
- the actual aperture image displayed on the liquid crystal monitor 16 will be described.
- the depth of field and brightness change according to the aperture value.
- the aperture value is F2
- an image with a shallower depth of field compared to the person image captured in the middle is displayed.
- the aperture value is F8
- an image with a relatively deep depth of field is displayed, focusing on the person in the middle and the background compared to the case with the aperture force SF2. Is done.
- an image having an aperture value force SF8 has a smaller amount of light incident on the image sensor 11 within a fixed time than an aperture value force. For this reason, an image with an aperture value of F8 is darker than an image with an aperture value of F2, and the image displayed on the LCD monitor 16 becomes dark, making it difficult for the photographer to see.
- the AGC unit 59 of the analog signal processing unit 51 described above is gay with respect to the actual aperture image so that the brightness is suitable for display on the liquid crystal monitor 16.
- Change processing gain increase
- the analog signal of the actual aperture image is amplified by the AGC unit 59 according to the aperture value.
- the brightness of both the images shown in FIGS. 13A and 13B related to the aperture value can be made substantially the same.
- the camera system 100 can brightly display the actual aperture image that becomes dark according to the aperture value. As a result, a photographer who is not affected by the difference in brightness can easily check the depth of field of the image.
- Whether or not the narrowing mode button 76 is OFF is determined by the body microcomputer 12, and if it is not OFF, steps S3 to S6 are repeated (S7). As a result, a real-time image corresponding to the set aperture value of the aperture ring 40 is displayed on the liquid crystal monitor 16, and the depth of field at the time of shooting can be easily confirmed via the liquid crystal monitor 16.
- the narrow-down mode button 76 when the narrow-down mode button 76 is switched to OFF, the quick return mirror 14 is returned to a predetermined position on the optical path X, and the narrow-down mode ends (S8).
- the analog signal of the actual aperture image is amplified by the AGC unit 59 of the analog signal processing unit 51 in accordance with the set aperture value. For this reason, even if the aperture value is small and the amount of light incident on the image sensor 11 is small within a certain time, the actual aperture image displayed on the liquid crystal monitor 16 becomes bright regardless of the aperture value. As a result, the photographer who is not affected by the difference in image brightness caused by the difference in aperture value can easily check the depth of field of the image.
- FIG. 16 shows a display example of the liquid crystal monitor 16. Since the configuration in the second embodiment is basically the same as the configuration in the first embodiment, the description thereof will be omitted and the description will focus on the different parts.
- the narrowing mode button 76 is pressed is determined by the body microcomputer. Judged by 12 (SI 1). When the narrowing mode button 76 is pressed, the mode is switched to the narrowing mode (S12). As shown in FIG. 11, in the narrowing mode, the quick return mirror drive motor 44 is driven by the quick return mirror control unit 43, and the quick return mirror 4 is retracted out of the optical path X. After the quick return mirror 4 is retracted, the image sensor 11 starts operating.
- an image serving as a reference for comparing the depth of field is automatically acquired.
- a part of the image of the aperture power obtained by the image sensor 11 is a reference image. Displayed as A (SI 3).
- the aperture value at this time is, for example, a reference aperture value preset by the body microcomputer 12.
- This reference aperture value is the brightest aperture value in the interchangeable lens unit 2 (with the aperture fully open), and has the shallowest depth of field.
- the reference image A is an image in which the background is blurred with respect to the human image taken in the middle.
- the reference image A is temporarily stored in the notch memory 54 and kept in the state displayed on the liquid crystal monitor 16 by the image display control unit 15.
- aperture information based on the rotation angle of the aperture ring 40 is detected by the aperture controller 27 based on a command from the lens microcomputer 20 (S 14, S15 ) based on a control signal from the 0 lens microcomputer 20 is generated by the control unit 27 drive signal stop for drive the diaphragm drive motor 28b, a diaphragm drive motor 28b, aperture blades of the aperture unit 28 is driven (S16).
- the aperture value of the imaging optical system L is changed to the aperture value (set aperture value) set by the aperture ring 40.
- the aperture value force F8 is set by the aperture ring 40
- the real-time image of F8 set by the aperture ring 40 is displayed as the comparison image B on the right side of the liquid crystal monitor 16 (S17).
- the gain of the image signal of the comparative image B is increased by the AGC unit 59 as in the first embodiment described above. Since the comparative image B is an image having an aperture power F8, compared to the reference image A, the comparative image B is an image having a deep depth of field that focuses on both the person in the middle and the background.
- the shooting mode shifts to the continuous shooting mode (S 18). Specifically, as shown in FIG. 15, the quick return mirror 4 is returned to a predetermined position on the optical path X, and a focusing operation is performed (S21, S22). Next, the quick return mirror 4 is in the optical path X Withdrawing to the outside (S23), the aperture value is adjusted to the reference aperture value F2 (S24). Specifically, the aperture blades of the aperture unit 28 are driven so that the aperture value becomes the set aperture value F2, and an image of the aperture value F2 is taken (S25).
- the aperture value is set to the set aperture value F8 (S26). Specifically, the aperture blades of the aperture unit 28 are driven so that the aperture value force F8 is obtained, and an image of the aperture value F8 is taken (S27). By these steps, two images with different depths of field are continuously shot, and the two images are recorded in the internal memory and Z or the recording medium based on the command of the image recording control unit 17 (S28). ). When this continuous shooting mode ends, the narrow-down mode is resumed from step S13 shown in FIG.
- the body microcomputer 12 determines whether or not the narrow-down mode button 76 is OF F (S18, S19). If not OFF, steps S13 to S18 are repeated (S19). When the narrow-down mode button 76 is switched to OFF, the quick return mirror 4 is returned to a predetermined position on the optical path X, and the narrow-down mode ends (S20).
- the reference image A and the comparison image B are displayed side by side on the liquid crystal monitor 16, so that images with different depths of field can be compared side by side. This makes it easier for the photographer to grasp the difference in image due to the difference in aperture value.
- the image signal of the comparative image B is gained up by the AGC unit 59 as in the first embodiment.
- the brightness of the reference image A and the comparative image B can be made substantially the same regardless of the aperture value.
- the image display format is not limited to the above-described embodiment.
- one image is divided into right and left in the middle of the person image, and the reference aperture value F2 temporarily stored is displayed on the left side of the display area.
- the left half of the quasi-image A is displayed, and the right half of the comparison image B with the set aperture value F8 is displayed as a live image on the right side of the display area.
- the comparison image B is a real-time image acquired with the set aperture value.
- two images are displayed side by side on the liquid crystal monitor 16, and two images are continuously shot in the continuous shooting mode.
- the number of images to be displayed and continuously shot is not limited to two, and may be three or more.
- the shooting is not limited to continuous shooting, and either the reference image A or the comparative image B may be shot.
- reference aperture value and the set aperture value are not limited to the aforementioned F2 and F8 (2)
- the aperture value is changed using the aperture ring 40 mounted on the interchangeable lens unit 2.
- the aperture ring 40 is not mounted on the interchangeable lens unit 2 may be considered.
- the aperture value is changed using a dial or the like mounted on the camera body 1.
- the dial mounted on the camera body 1 does not have to be a dedicated dial for setting the aperture value.
- the dial may have other functions besides the aperture value setting.
- an image acquired by the imaging sensor 11 is displayed on the liquid crystal monitor 16.
- another image sensor may be provided in the finder optical system 19 and an image may be acquired by this image sensor.
- quick It is not necessary to turn the turn mirror out of the optical path ⁇ .
- the configuration and arrangement of the quick return mirror 4 and the finder optical system 19 are not limited to the first and second embodiments described above.
- the narrow-down mode button 76 if the narrow-down mode button 76 is pressed once, the shooting mode is shifted to the narrow-down mode, and if it is pressed again, the narrow-down mode is canceled. However, the narrowing mode may be continued only while the narrowing mode button 76 is pressed.
- the focus detection method is the phase difference detection method using the focus detection unit 5.
- the focus detection method may be a contrast detection method using the image sensor 11, for example. In this case, for example, the processing of steps S21 and S23 shown in FIG. 15 is unnecessary, and the focusing operation time can be shortened.
- the force described for displaying an image corresponding to two aperture values on the liquid crystal monitor 16 is not limited to this.
- an image corresponding to a plurality of aperture values of 3 or more May be displayed on the LCD monitor 16 as a multi-screen.
- an image corresponding to the aperture value when the aperture is in the open state is always displayed in a specific display area on the LCD monitor 16, and the aperture value other than the aperture value when the aperture is in the open state is displayed in the other display areas.
- a plurality of images corresponding to the aperture value may be displayed respectively.
- gain increase processing is performed by the AGC unit 59 of the analog signal processing unit 51.
- the brightness of the image is adjusted according to the aperture value by increasing the sensitivity of the imaging sensor 11 using the analog signal processing unit 51 or the like.
- a process corresponding to the gain-up process may be performed in a part other than the analog signal processing unit 51.
- the camera system is described by taking a single-lens reflex digital camera as an example. However, if this camera system has an aperture value changing function, it is a single lens reflex type. It can be applied to other digital cameras.
- the coordinate axes and directions used in the above description do not limit the usage state of the camera system 100.
- the present invention can also be expressed as follows.
- An image pickup apparatus having a movable reflection mirror disposed between an image pickup optical system and an image pickup device, and having an observation optical system for observing light reflected by the reflection mirror, wherein the reflection mirror Reflecting mirror driving means for driving
- Image processing means for changing the gain for the captured image
- Image display means for displaying the captured image
- the photographing optical system is controlled to an actual aperture state, the second photographing mode is entered, and the gain of the photographed image is increased by the image processing means.
- An image pickup apparatus comprising a preview operation means displayed on the display means.
- An image pickup apparatus having a movable reflection mirror disposed between an image pickup optical system and an image pickup device, and having an observation optical system for observing light reflected by the reflection mirror, wherein the reflection mirror Reflecting mirror driving means for driving
- a first imaging mode in which imaging is performed by driving the reflection mirror to a first state so that light passing through the imaging optical system is reflected by the reflection mirror and guided to the observation optical system;
- the reflection mirror is connected to the second mirror so as to guide the light passing through the optical system to the image sensor.
- a second shooting mode in which shooting is performed by driving to a state;
- Image processing means for changing the gain for the captured image
- Image display means for displaying the captured image
- the photographing optical system is controlled to the first aperture state, the second photographing mode is entered, and the photographed image is increased in gain by the image processing means.
- Aperture changing means for changing the aperture value of the optical system
- An image pickup apparatus comprising: image display control means for causing the image display means to display simultaneously with image data.
- the imaging apparatus further comprising image recording means for recording a captured image in the first actual aperture state and a captured image in the second actual aperture state.
- the invention described in appendix 1 is an image pickup apparatus that includes a movable reflection mirror disposed between the image pickup optical system and the image pickup device, and includes an observation optical system that observes light reflected by the reflection mirror. Therefore, the reflection mirror driving means for driving the reflection mirror and the light passing through the imaging optical system are reflected by the reflection mirror and driven to the observation optical system so as to take a picture.
- the first shooting mode to be performed the second shooting mode in which shooting is performed by driving the reflecting mirror to the second state so that the light passing through the imaging optical system is guided to the image sensor, and the gain for the captured image
- the photographing optical system is controlled to the actual aperture state, and when the second photographing mode is entered, the photographed image is subjected to image processing.
- Gain increased by means Te is an imaging apparatus characterized by comprising a preview operation unit that appears on the display unit.
- the invention described in appendix 2 includes a reflecting mirror driving unit that drives the reflecting mirror, and a reflecting mirror that first reflects the light that has passed through the imaging optical system by the reflecting mirror and guides it to the observation optical system.
- the first shooting mode for shooting in this state and the light passing through the imaging optical system to the image sensor As shown, the second shooting mode in which the reflecting mirror is driven to the second state and shooting is performed, the image processing means for changing the gain for the shot image, and the image display means for displaying the shot image are operated.
- the photographing optical system is controlled to the first aperture state, the second photographing mode is entered, and the photographed image is displayed on the display means with the gain increased by the image processing means.
- An image display apparatus comprising image display control means for causing image display means to display image data in the actual aperture state simultaneously with image data in the first aperture state.
- the invention described in Supplementary Note 3 is an imaging device including image recording means for recording a captured image in the first actual aperture state and a captured image in the second actual aperture state. .
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Abstract
Description
Claims
Priority Applications (4)
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US12/092,757 US20090262207A1 (en) | 2006-06-20 | 2007-06-12 | Camera system |
CN2007800229983A CN101473641B (zh) | 2006-06-20 | 2007-06-12 | 相机系统 |
JP2008522401A JP5236467B2 (ja) | 2006-06-20 | 2007-06-12 | カメラシステム |
US14/457,067 US9007507B2 (en) | 2006-06-20 | 2014-08-11 | Camera system for adjusting displayed image according to an aperture value |
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JP2006170016 | 2006-06-20 | ||
JP2006-170016 | 2006-06-20 |
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US14/457,067 Division US9007507B2 (en) | 2006-06-20 | 2014-08-11 | Camera system for adjusting displayed image according to an aperture value |
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WO2013058025A1 (ja) * | 2011-10-19 | 2013-04-25 | 富士フイルム株式会社 | 変倍ファインダ装置及び表示情報の輝度変更方法 |
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JP4042710B2 (ja) * | 2004-02-25 | 2008-02-06 | カシオ計算機株式会社 | オートフォーカス装置及びそのプログラム |
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JP2007033701A (ja) * | 2005-07-25 | 2007-02-08 | Pentax Corp | デジタル一眼レフカメラ |
JP2007140278A (ja) * | 2005-11-21 | 2007-06-07 | Eastman Kodak Co | デジタルカメラ、露出条件決定方法 |
CN101305594B (zh) * | 2005-12-07 | 2011-12-14 | 松下电器产业株式会社 | 相机系统、相机主体、替换镜头单元和摄像方法 |
JP2007201671A (ja) * | 2006-01-25 | 2007-08-09 | Pentax Corp | デジタル一眼レフカメラ |
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2007
- 2007-06-12 CN CN2011100349659A patent/CN102062989A/zh active Pending
- 2007-06-12 WO PCT/JP2007/061835 patent/WO2007148565A1/ja active Application Filing
- 2007-06-12 CN CN2007800229983A patent/CN101473641B/zh not_active Expired - Fee Related
- 2007-06-12 US US12/092,757 patent/US20090262207A1/en not_active Abandoned
- 2007-06-12 JP JP2008522401A patent/JP5236467B2/ja active Active
-
2012
- 2012-01-16 JP JP2012006313A patent/JP5341214B2/ja not_active Expired - Fee Related
-
2014
- 2014-08-11 US US14/457,067 patent/US9007507B2/en not_active Expired - Fee Related
Patent Citations (2)
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JP2001013547A (ja) * | 1999-06-29 | 2001-01-19 | Kyocera Corp | 一眼レフカメラ |
JP2005064699A (ja) * | 2003-08-08 | 2005-03-10 | Olympus Corp | カメラ |
Also Published As
Publication number | Publication date |
---|---|
US20090262207A1 (en) | 2009-10-22 |
JP5236467B2 (ja) | 2013-07-17 |
CN101473641A (zh) | 2009-07-01 |
JP5341214B2 (ja) | 2013-11-13 |
JPWO2007148565A1 (ja) | 2009-11-19 |
US20140347543A1 (en) | 2014-11-27 |
CN101473641B (zh) | 2011-04-06 |
US9007507B2 (en) | 2015-04-14 |
JP2012124915A (ja) | 2012-06-28 |
CN102062989A (zh) | 2011-05-18 |
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