JPH086146A - Trimming settable camera - Google Patents

Abstract

PURPOSE:To constitute a camera so that the same zoom value as the value set at the preceding time with reference to a trimming size may be set when the size is specified and also the same trimming size and focal distance as those used at the preceding time may be preset when a power supply is turned on, in order to immediately read out the same trimming size and focal distance as the preceding ones even in the case the trimming size is switched and the power supply is turned off. CONSTITUTION:In the camera body 1, a BCPU 13 connected with a release switch 14, a main switch 15, a trimming changeover switch 16, an LCD driver 18, an LED driver 20 and an EEPROM 21, etc., and optical parts are installed. In a photographic lens barrel 2 mounted on the camera body 1, the lens barrel is provided with a photographic lens 31 and an LCPU 32 connected with a focusing motor driver 37 for driving a focusing motor 36, a PI circuit 42, a zoom motor driver 44 for driving a zoom motor 43, a PI circuit 49 and a zooming operating member 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interchangeable lens type camera capable of writing trimming information at the time of printing on a film.

[0002]

2. Description of the Related Art Conventionally, in cameras with interchangeable lenses, various cameras capable of writing trimming information at the time of printing on a film, that is, capable of trimming setting have been developed.

For example, Japanese Unexamined Patent Publication No. 5-19368 discloses a technique of setting trimming screens having different aspect ratios based on a trimming selection switch and writing data indicating the trimming screens on a film.

[0004]

According to the above-mentioned technique, even if there is a combination of the zoom and the aspect ratio, which are frequently used during use, it is necessary to manually set each independently. For this reason, when shooting with repeatedly changing the aspect ratio, even if the zoom value used for each aspect ratio is the same, the zoom is performed again, so a certain angle of view cannot be obtained or a photo opportunity is missed. Can be considered.

Further, when the power switch is turned off and then turned on again while moving during shooting, the camera with power-on reset is initialized and the aspect ratio and zoom set at the time of the previous shooting etc. change. There were challenges.

The present invention has been made in view of the above problems. When the aspect ratio is switched, the previous zoom state can be obtained without returning each zoom value by the zooming operation, and the angle of view with respect to the aspect ratio is kept constant. An object of the present invention is to provide a camera that can be trimmed and that does not miss a photo opportunity even if the aspect ratio is switched.

Further, the present invention provides a camera with a power-on reset, in which the aspect ratio and zoom are set at the time of power-off and the trimming can be set immediately to start shooting. To aim.

[0008]

That is, according to the present invention, in a camera capable of writing trimming setting information of a photographing screen on a film and performing trimming setting, any one of a plurality of trimming sizes having different aspect ratios with respect to the photographing screen is set. Trimming selection means for selecting, setting means for setting the trimming size of the camera body based on the trimming size information selected by the operation of the trimming selection means, and trimming information recording means for recording the trimming size on a film.
When the trimming selection means is operated, the storage means for storing the latest zoom value information of the photographing lens in each trimming size selected by the trimming selection means is selected based on the output of the storage means. And a zooming unit for setting a zoom value according to a trimming size.

Further, according to the present invention, trimming setting means for writing trimming setting information of a photographing screen on a film and selecting one of a plurality of trimming sizes having different aspect ratios for the photographing screen in a camera capable of trimming setting. The setting means for setting the trimming size of the camera body based on the trimming size information selected by the operation of the trimming selecting means, the trimming information recording means for recording the trimming size on the film, and the operation of the camera are turned on.
A power switch for switching off, a storage means for storing the trimming size set at that time and / or the latest zoom value information of the photographing lens when the power switch is turned off, and the power switch from on to off When the mode is switched to, the trimming size and / or the zoom value is set based on the storage means.
And a zoom return means.

[0010]

According to the present invention, in a camera capable of writing trimming setting information of a photographing screen on a film and performing trimming setting, one of a plurality of trimming sizes having different aspect ratios with respect to the photographing screen is selected by the trimming selecting means. To be selected. Then, the trimming size of the camera body is set by the setting means based on the trimming size information selected by the operation of the trimming selecting means, and this is recorded on the film by the trimming information recording means. The latest zoom value information of the photographic lens in each trimming size selected by the trimming selection means is stored in the storage means. When the trimming selection means is operated, a zoom value corresponding to the trimming size selected by the zooming means is set based on the output of the storage means.

Further, according to the present invention, in a camera capable of writing trimming setting information of a photographing screen on a film and performing trimming setting, one of a plurality of trimming sizes having different aspect ratios with respect to the photographing screen is trimming selecting means. Selected in. Based on the trimming size information selected by the operation of the trimming selecting means, the trimming size of the camera body is set by the setting means. Then, this is recorded on the film by the trimming information recording means. Further, when the power switch for switching the operation of the camera on / off is turned off, the trimming size set at that time and / or the latest zoom value information of the taking lens is stored in the storage means. On the other hand, when the power switch is switched from OFF to ON, the trimming size and / or the zoom value is set by the trimming zoom returning unit based on the storage unit.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention and is a block diagram of an interchangeable lens type camera. In FIG. 1, this camera is composed of a camera body 1 and a taking lens barrel 2 which is detachably attached to the camera body 1.

First, the camera body 1 will be described. In the camera body 1, a body CPU (BCPU) 1 connected by an electric contact group 11 and a communication line group 12
3 is provided. The BCPU 13 also includes a release switch 14, a main switch 15, a trimming changeover switch 16, an LCD driver 18 for driving an LCD (liquid crystal display) 17, and an LED driver 20 for driving an LED (light emitting diode) 19. And BCPU1
An EEPROM (nonvolatile memory) 21 capable of writing and reading in 3 is connected.

The release switch 14 is composed of a release button. When this switch is pressed, a release signal is transmitted to the BCPU 13. The main switch 15 is composed of a slide type switch. When the main switch 15 is turned on, the BCPU 13 activates the camera, and when it is turned off, the power saving non-operation mode is entered.

Each time the trimming changeover switch 16 is pressed, it is set to "H" (high aspect ratio 1: 1.
8) ”→“ P (aspect ratio 1: 2.8 in panorama) ”
→ "N (Normal aspect ratio 1: 1.5)" →
The aspect ratio is switched so that the setting trimming changes to "H".

The LCD driver 18 is the BCPU 13
The trimming size is displayed on the LCD 17 by being driven by the instruction. The LED driver 20 is LE
By driving D19, the selected trimming information is written above the film 22.

A liquid crystal screen 23, a liquid crystal driver 24 for driving the liquid crystal screen 23 according to an instruction from the BCPU 13, a condenser lens 25, a pentaprism 26, and a finder eyepiece 27 are provided above the camera body 1. ing. And the camera body 1
A main mirror 28 provided inside the mirror reflects the light flux incident from the taking lens barrel 2 upward. This allows
The incident light flux passes through the above-mentioned optical components and is observed by the photographer.

Next, the taking lens barrel 2 will be described. The taking lens 31 is composed of a plurality of lenses, and zooming (magnification) can be performed by moving at least one lens in the optical axis direction. Further, focusing (focus adjustment) can be performed by moving at least one lens in the optical axis direction. The focal length is the same as the above zooming,
It varies from 20 mm to 50 mm.

The lens CPU (LCPU) 32 is connected to an electric contact group 35 which comes into contact with the electric contact group 11 in the camera body 1 through a communication line group 34. A focus motor driver 37 that drives a focus motor 36 is connected to the LCPU 32 as a focus system. The slit plate 39 is attached to the motor shaft 38 of the focusing motor 36, and the focusing lens group of the taking lens 31 is engaged by the force transmission mechanism (TrF) 40. Therefore, focusing is performed by the rotation of the focusing motor 36.

Further, a photo interrupter 41 for detecting the rotation of the slit plate 39 with the slit plate 39 interposed therebetween.
Is provided. The photo interrupter 41 and the photo interrupter circuit (PI circuit) 42 generate a digital pulse proportional to the rotation, and the value thereof is LCPU.
32 is input.

Further, a zoom motor driver 44 for driving a zoom motor 43 is connected to the LCPU 32 as a zoom system. The slit plate 46 is attached to the motor shaft 45 of the zoom motor 43, and the force transmission mechanism (TrZ) 47 engages with the zoom lens group of the taking lens 31. Therefore,
Zooming is performed by the rotation of the zoom motor 43.

A photo interrupter 48 for detecting the rotation of the slit plate 46 with the slit plate 46 interposed therebetween.
Is provided. The photo interrupter 48 and the photo interrupter circuit (PI circuit) 49 generate a digital pulse proportional to the rotation, and the value thereof is LCPU.
32 is input. By counting this from the initial position, the LCPU 32 can know the zoom state.

Reference numeral 50 denotes a zoom operation member, which is composed of buttons as shown in FIG. Pressing the T (tele) button zooms toward the tele side, and pressing the W (wide) button zooms toward the wide side. These zooming operations are LCP
It is transmitted to the BCPU 13 via U32.

FIG. 2 is a top view of the camera shown in FIG. In FIG. 2, a release switch 14 and a main switch 15 are provided on the upper right of the camera body 1. A trimming changeover switch 16 and an LCD 17 are provided on the upper left of the camera body 1.

FIG. 3 shows a display example of the LCD 17 showing the selected trimming state. Fig. 3 (a) is for high-definition (aspect 1: 1.8) and Fig. 3 (b).
Shows a panorama (aspect 1: 2.8), and FIG. 7C shows a normal (aspect 1: 1.5).

4A, 4B and 4C,
The view fields of high-vision, panorama and normal viewfinders are shown, respectively, and the shaded areas in the figure are shielded by the liquid crystal screen 23. These FIG. 4 (a),
The finder fields of view of (b) and (c) are respectively shown in FIG.
This corresponds to the trimming states of (a), (b) and (c).

Next, the film 22 will be described with reference to FIG. FIG. 5 shows the film 22 used in the camera of the embodiment. Base film BF
_{At 0} , the perforation showing the piece position is 1 above it.
Two pieces are provided for each piece. A ₀ is a screen of 18 × 32 mm exposed by the camera body 1, and its diagonal length is smaller than that of 35 mm size, and is always exposed regardless of the trimming size. The marks P ₁ , P ₂ , P ₃ are
It shows a trimming screen which is exposed and written by the LED 19. These marks indicate the trimming screen by the distance L _n from the upper left perforation 22a of the piece.

As shown in FIG. 5A, when the distance L _n is L ₁ , a panoramic size with an aspect ratio of 1: 2.8 is shown. In this case, the area A _P indicated by the broken line in the drawing is trimmed. As shown in FIG. 5 (b),
When the distance L _n is L ₂ , the aspect ratio is 1: 1.8.
The area A _H indicated by the broken line in the figure is trimmed. Further, in FIG. 5C, a normal size with an aspect ratio of 1: 1.5 is represented by L ₃ , and in this case also, the area A _N indicated by the broken line in the figure is trimmed.

FIG. 6 is a conceptual diagram showing a memory area of the EEPROM 21. Area M in memory area MA ₀
A ₁ is an area for writing and storing the aspect ratio of the trimming size when the main switch 15 is turned off. A number corresponding to the aspect ratio is written in this area MA ₁ , and is read by the BCPU 13 when the main switch 15 is turned on again.

MA ₂ is an area for storing the previous zoom value corresponding to the aspect. Furthermore, MA ₂₁ , M
A ₂₂ and MA ₂₃ are areas for storing zoom values set in high-definition, panorama, and normal, respectively, and the values are rewritten when the zoom is stopped.

Next, the processing operation of the BCPU 13 will be described with reference to the flowcharts of FIGS. 7 and 8. When the main switch 15 is turned on, the BCPU 13 starts operating. Then, in step S1, the communication line 12,
A communication request is output to the taking lens barrel 2 via 34. In response to this, in step S2, the unique data of the lens output from the taking lens barrel 2 is received, and in step S3, the previous trimming is read from the EEPROM 21. This has an aspect ratio of 1: 1.
8 high definition, 1: 1.5 normal, or 1: 2.8 panorama.

Next, in step S4, the zoom value corresponding to the aspect ratio is read from the EEPROM 21. For example, in the case of a panorama (aspect ratio 1: 2.8), it is from the area MA ₂₂ shown in FIG. Then, in step S5, a numerical value corresponding to the aspect ratio read in step S3 is written in the trimming identification register in the BCPU 13 for presetting.

Further, the zoom is driven to a predetermined value based on the result of step S4. Then, in step S7, the LCD display corresponding to the trimming is performed, and in step S8, the viewfinder field is set.

In step S9, it is determined whether or not the release is performed. If the release is performed, the process proceeds to step S10 to execute the release routine. Here, exposure, data recording on a film, and winding are performed. Then, it returns to step S9.

If the release is not made in step S9, it is subsequently determined in step S11 whether or not the main switch 15 is turned off. If it is turned off, the process proceeds to S step S12, and if it is not turned off, the process proceeds to step S15.

In step S12, the trimming state at this time is recorded in the area MA ₁ shown in FIG. Then, in step S13, the viewfinder field of view is shown in FIG.
For the high-definition shown in, further step S14
After zooming to the shortest position with, stop the operation.

On the other hand, in step S15, it is determined whether or not the zoom operating member 50 has been operated. If the zoom operating member 50 has been operated, the process proceeds to step S16, and if not, the process proceeds to step S19. The state of the zoom operation member 50 is LCPU.
Since 32 outputs a signal to the communication line 34 in real time, it can be determined by monitoring with the BCPU 13.

In step S16, the BCPU 13 instructs the photographing lens barrel 2 to start zoom drive via the communication lines 12, 34 and the like. Next, in step S17, it is determined whether or not the zoom operation has been completed. here,
When the operation is completed, the process proceeds to step S18 to instruct to stop the zoom drive, and the zoom value is stored in the storage area of the corresponding trimming in step S37, and then step S9 is performed.
Return to

On the other hand, in step S19, it is determined whether or not the trimming changeover switch 16 is operated. Here, if there is no operation, the process returns to step S9, and if there is an operation, the process proceeds to step S20. In step S20, it is determined whether the current setting is high definition. If the current setting is high-vision, the operation of the trimming changeover switch 16 changes from "H (high-vision)" to "P (panorama)", so that the process proceeds to step S32. If it is not high-definition in step S20, it is determined in step S21 whether the current setting is panorama. If it is a panorama in this step S21, "P" → "N (normal)" is set, so the process proceeds to step S27. If it is not a panorama, "N" →
Since it becomes "H", the process proceeds to step S22.

First, in step S22, a new setting is set to high-definition (aspect ratio 1: 1.8), then the LCD display is changed in step S21, and then the viewfinder field is changed in step S22. Then, in step S25, the zoom value in the high-definition trimming setting is read from the EEPROM 21. Next, in step S26, the taking lens barrel 2 is moved via the communication lines 12 and 34 so as to zoom to the zoom value.
Instruct. Then, it progresses to step S37.

Similarly, in step S27, the new setting is set to normal (aspect 1: 1.5), and step S27 is performed.
In 28 and S29, the LCD display and viewfinder field are changed. Then, in step S30, the zoom value in the normal trimming setting is read from the EEPROM 21.
Next, in step S31, the photographing lens barrel 2 is instructed to zoom to the zoom value, and then the process proceeds to step S37.

Further, in step S32, the new setting is panorama (aspect ratio 1: 2.8), and step S3
3, the LCD display and viewfinder field are changed in S34. Then, in step S35, the zoom value in the panorama trimming setting is read from the EEPROM 21.
Next, in step S36, the photographing lens barrel 2 is instructed to zoom to the zoom value, and then the process proceeds to step S37.

As described above, according to the first embodiment, when the main switch 15 is turned on, the trimming size (aspect ratio) and the zoom value at the time of the previous use are automatically set, so that it is possible to perform the shooting operation. In order to prevent battery consumption, the main switch 15 can be frequently turned on and off to continue shooting with the same angle of view.

The trimming size (aspect ratio)
Since the zoom value for the previous aspect ratio is set when you switch to, you can shoot while switching the aspect ratio and zoom state with a certain combination without having to manually set the zoom. Never miss it.

Further, since the previous storage of the aspect ratio and the zoom is a non-volatile memory such as an EEPROM, the previous settings can be restored even when the battery is replaced. next,
A second embodiment of the present invention will be described.

The second embodiment has the same camera configuration as that of the first embodiment described above, but in the case of a specific aspect ratio, for example, in the second embodiment, the aspect ratio is set to the high-definition size. The difference is that automatic zoom recovery is not performed at the time of setting.

The operation of the BCPU 13 of the camera according to the second embodiment will be described with reference to the flowcharts of FIGS. 9 and 10. In step S41, a communication request is output to the taking lens barrel 2 via the communication lines 12, 34 and the like. In response to this, in step S42, the unique data of the lens output from the taking lens barrel 2 is received, and in step S43, the previous trimming is read from the EEPROM 21.

Next, in step S44, it is determined whether or not the previous trimming size is high definition. Here, in the case of high-definition, the process proceeds to step S47 and zooming is not performed. On the other hand, if the previous trimming size is not high definition, the zoom value corresponding to the aspect ratio is set to the EEPROM 21 in step S45.
Read from.

After driving the zoom to a predetermined value in step S46, a numerical value corresponding to the aspect ratio read in step S43 is written and preset in the trimming identification register in the BCPU 13 in step S47. Then, in step S48, LCD display corresponding to the trimming is performed, and in step S49, the viewfinder field is set.

Hereinafter, steps S50 to S65, steps S66 to S70, steps S71 to 75 and step S
Reference numeral 76 denotes step S9 in the flowchart of FIG.
-S24, steps S27-S31, step S32-
The description is omitted because it is similar to S36 and S37. In this case, when new high definition
After step S65, the process returns to step S50 without zooming or storing the zoom value.

As described above, in the second embodiment, for the commonly used HDTV, the zoom is not automatically restored, and the aspect ratio often used in combination with a specific focal length (for example, panorama is wide, Since the automatic zoom return is used only for normal (telephoto), it is possible to omit the automatic zoom setting contrary to the user's intention in general photographing, and it is possible to perform the operation more in line with the user's intention.

In the above-described second embodiment, the aspect ratio at which zoom is not automatically restored may be other aspect ratio than high-definition, and may be selected by the user. In addition, the configuration may be such that permission / prohibition of the automatic zoom return can be switched.

Furthermore, although the interchangeable lens type camera has been described in the above-mentioned first and second embodiments, the present invention is not limited to this, and the camera may be a lens-body type camera in which lens conversion is not possible. The memory that stores the previous aspect ratio and zoom value may be in a unit other than the camera body, such as an interchangeable lens.
Further, it goes without saying that the aspect ratio is not limited to the above-mentioned three types of high-definition, normal, and panoramic.

According to the above embodiment of the present invention, the following constitution can be obtained. (1) Trimming selection means for writing trimming setting information of a photographing screen on a film and selecting one of a plurality of trimming sizes having different aspect ratios for the photographing screen in a camera capable of trimming setting, and this trimming selecting means Setting means for setting the trimming size of the camera body based on the trimming size information selected by the operation, trimming information recording means for recording the trimming size on a film, a power switch for switching the operation of the camera on and off, and a power switch When the switch is turned off, storage means for storing the trimming size set at that time, and trimming recovery for setting the trimming size based on the storage means when the power switch is switched from off to on And a camera.

(2) Aspect ratio selecting means for writing trimming setting information of a photographing screen on a film and selecting one of a plurality of different trimming aspect ratios for the photographing screen in a camera capable of trimming setting.
The setting means for setting the aspect ratio of the camera body based on the aspect ratio information selected by the operation of the aspect ratio selecting means, the aspect ratio information recording means for recording this on the film, and the aspect ratio selecting means When the storage means for storing the latest zoom value information of the photographing lens in each aspect ratio and the aspect ratio selection means are operated, the zoom value according to the selected aspect ratio is output based on the output of the storage means. And a zooming means for setting the camera.

(3) In the camera described in (2) above, the zooming means is operated only when a specific aspect ratio is selected by operating the aspect ratio selecting means.

(4) The camera according to (2) above, wherein the specific aspect ratio is the maximum aspect ratio. (5) The camera according to (2) above, wherein the specific aspect ratio is the minimum aspect ratio.

[0058]

As described above, according to the present invention, when the aspect ratio is switched, the previous zoom state can be obtained without returning each zoom value by the zooming operation, and the angle of view with respect to the aspect ratio can be made constant. Further, it is possible to provide a camera in which trimming setting is possible without missing a photo opportunity even if the aspect ratio is switched.

Further, according to the present invention, in the camera with power-on reset, there is provided a camera in which the aspect ratio and the zoom are set at the time of power-off and the trimming can be set immediately to start photographing. be able to.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a lens-interchangeable camera according to an embodiment of the present invention.

FIG. 2 is a top view of the camera shown in FIG.

FIG. 3 shows a display example of the LCD 17 showing a selected trimming state, in which (a) is for high-definition (aspect 1: 1.8) and (b) is for panorama (aspect 1: 2.8). , (C) are normal (Aspect 1:
It is the figure which showed 1.5).

4 (a), (b) and (c) are diagrams showing high-vision, panorama and normal viewfinder fields, respectively.

FIG. 5 is a film 2 used in the camera of the first embodiment.
2A, 2B, 2A, 2B, 2A, 2B, 2A and 2B, a panoramic size, a high definition size, and a normal size.

FIG. 6 is a conceptual diagram showing a memory area of the EEPROM 21 of FIG.

FIG. 7 is a flowchart illustrating a processing operation of a BCPU 13 in the camera body 1.

FIG. 8 is a flowchart illustrating a processing operation of a BCPU 13 in the camera body 1.

FIG. 9 is a flowchart illustrating the operation of the BCPU 13 according to the second embodiment.

FIG. 10 is a flowchart illustrating an operation of the BCPU 13 according to the second embodiment.

[Explanation of symbols]

1 ... Camera body, 2 ... Shooting lens barrel, 11, 35 ...
Electrical contact group, 12, 34 ... Communication line group, 13 ... Body CPU (BCPU), 14 ... Release switch, 15 ...
Main switch, 16 ... Trimming selector switch, 17
LCD (liquid crystal display), 18 LCD driver, 19
... LED (light emitting diode), 20 ... LED driver,
21 ... EEPROM (non-volatile memory), 22 ... Film, 23 ... Liquid crystal screen, 24 ... Liquid crystal driver, 25
... condenser lens, 26 ... penta prism, 27 ... finder eyepiece, 28 ... main mirror, 31 ... shooting lens, 32 ... lens CPU (LCPU), 36 ... focus motor, 37 ... focus motor driver,
40 ... Force transmission mechanism (TrF), 41, 48 ... Photointerrupter, 42, 49 ... Photointerrupter circuit (PI)
Circuit), 43 ... Zoom motor, 44 ... Zoom motor driver, 47 ... Force transmission mechanism (TrZ), 50 ... Zoom operation member.

Claims (3)

[Claims] 1. A trimming selection unit for writing trimming setting information of a photographing screen on a film and selecting one of a plurality of trimming sizes having different aspect ratios for the photographing screen in a camera capable of trimming setting, and this trimming. Setting means for setting the trimming size of the camera body based on the trimming size information selected by the operation of the selecting means, trimming information recording means for recording the trimming size on a film, and each trimming size selected by the trimming selecting means. Storage means for storing the latest zoom value information of the photographic lens, and zooming means for setting a zoom value according to the selected trimming size based on the output of the storage means when the trimming selection means is operated. A turtle with adjustable trimming . 2. The camera capable of trimming setting according to claim 1, wherein the zooming means operates only when a specific trimming size is selected by operating the trimming selection means. 3. A trimming selection means for writing trimming setting information of a photographing screen on a film and selecting one of a plurality of trimming sizes having different aspect ratios for the photographing screen in a camera capable of trimming setting, and this trimming. Setting means for setting the trimming size of the camera body based on the trimming size information selected by the operation of the selecting means, trimming information recording means for recording the trimming size on a film, and a power switch for switching the operation of the camera on and off, When the power switch is turned off, a trimming size set at that time, and / or storage means for storing the latest zoom value information of the photographing lens, and when the power switch is turned on,
A camera capable of trimming setting, comprising trimming / zoom restoring means for setting a trimming size and / or a zoom value based on the storage means.