JPH05158149A - Device and method for close-up photographing - Google Patents

Abstract

PURPOSE:To inexpensively obtain a close-up photographing device which can take a good picture by shielding light from the photometric window of an electronic still camera, and furthermore, taking the picture in a state where exposure is fixed. CONSTITUTION:The photometric window 11 and a photographing lens 12 are provided, and a part (light shielding part) 1d to which the photometric window 11 is opposed on a condition where the electronic type still camera 3 is attached to a device is provided, and light entering to a photometric sensor arranged in the photometric window 11 is shielded. In this case, the light is shielded in a state where the end part 1b of a hood 1 integrally formed on a camera holding member 2 is directly used; however, when the light is not shielded enough, a cushioning material such as urethane foam is used to close the photometric window 11, so that the light is surely shielded. And when the electronic type still camera in which a low brightness side in an exposure control interlocking range is set to about EV6-8 is specially used, the light from the photometric window 11 is shielded by the means, and the exposure is fixed equivalently to the minimum brightness in the interlocking range, so that the good picture can be taken.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a close-up apparatus suitable for CRT photography using an electronic still camera.

[0002]

2. Description of the Related Art Conventionally, as a device for performing CRT photographing of an oscilloscope or the like using an electronic still camera, a waveform displayed on the oscilloscope or the like is recorded on, for example, a magnetic disk which is used instead of a film, and a reproduced image is reproduced on a television. The method of seeing with John monitor is proposed.

In the conventionally proposed apparatus, the exposure control method is such that the display screen is metered by a sensor incorporated in the electronic still camera, and the shutter speed and aperture are controlled by a predetermined program according to the brightness of the display screen. The exposure control method was based on general photography.

[0004]

However, since the display screen of an oscilloscope or the like is an object that has an extremely bright luminance difference only in the waveform, depending on the type of the waveform or the brightness adjustment level of the waveform of the oscilloscope, it may not be possible to use the conventional general photography. With a similar exposure control method, the scale may not be visible or the image may be dark.

Further, when photographing a waveform having a relatively slow sweep speed, if the shutter speed is controlled faster than the sweep speed, a broken waveform may be recorded in the middle.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a close-up device capable of providing a better subject image.

[0007]

SUMMARY OF THE INVENTION In order to solve the conventional problems and achieve the above object, the present invention is a close-up device capable of taking a close-up of a subject using an electronic still camera. The electronic still camera and the electronic still camera at predetermined relative positions, and a hood portion for blocking external light, a holding portion for holding the electronic still camera, and a photometric window for controlling the exposure of the electronic still camera. And a light blocking portion for blocking light.

Further, the light-shielding portion is formed integrally with the hood portion, and the hood portion and the holding portion are also integrally formed.

Further, the printer is arranged outside the effective optical path inside the hood.

A close-up method using an electronic still camera, which is another invention, positions a subject and the electronic still camera at a predetermined relative position and shields external light.
Further, it is achieved by shielding the photometric window for controlling the exposure of the electronic still camera and taking a picture with the exposure of the electronic still camera kept constant.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings based on a CRT photographing device as one form of a close-up photographing device.

FIG. 1 shows a state in which an electronic still camera is attached to the main body of the CRT photographing device. 1 is a hood formed integrally with the camera holding member 2, 3 is an electronic still camera, 4 is a release button, 5 is a display device such as a liquid crystal,
6 is an operation button, 7 is a main switch, 8 is an eject operation knob for ejecting a recording medium such as a magnetic disk,
9 is a video-out terminal and 10 is a finder.

The electronic still camera 3 is fixed to the camera holding member 2 by a mounting screw (not shown) (for example, a tripod screw) on the lower surface, and a hole 1c is provided in the end 1b of the hood 1.
Is configured so that an image on the CRT screen can be taken. The front end 1a of the hood 1 is open, and the angle of view is set and the light is shielded by pressing the opening 1a against a CRT portion (not shown).

Photographing is performed by setting the main switch 7 to the REC position to set the recordable state and pressing the release button 4, and recording is performed at the same time. For playback, connect the video-out terminal 9 to a television monitor (not shown) with a cable (not shown).
To the PLAY position where a reproducible state is obtained,
This is done by selecting the screen to be reproduced with the operation button 6.
At this time, the display device 5 can confirm the number of the screen.

In FIG. 2, 11 is a photometric window and 12 is a taking lens. Reference numeral 1d denotes a portion (light-shielding portion) where the photometric window 11 faces when the electronic still camera 3 is attached to the device, and blocks light entering a photometric sensor (not shown) arranged in the photometric window 11. .

In this embodiment, the end portion 1b of the hood 1 formed integrally with the camera holding member 2 is used to directly shield light. However, when the light shielding is insufficient, a cushioning material such as urethane foam is used. By blocking the photometric window 11 with light, reliable light shielding can be performed.

The structure of the CRT photographing device in the present embodiment has been described above. Especially, in the case of an electronic still camera in which the low-luminance side of the exposure control interlocking range is set to around EV6 to 8, the above-mentioned means is used for the photometric window. By shielding 11 and fixing the exposure to the minimum luminance of the interlocking range, a good image can be taken.

At this time, since the shutter speed is the maximum time, the waveform having a relatively slow sweep speed can be recorded.

Since the exposure is fixed, the photographer can take an image of desired brightness by adjusting the waveform brightness of the oscilloscope.

Further, when an electronic still camera whose exposure control interlocking range is on the lower brightness side (less than EV6) is used, an optical filter may be arranged in the hole 2a to correct the exposure.

As another method, it is conceivable that the electronic still camera is provided with a detecting means such as a switch to detect that the apparatus is attached and the exposure control is set to the CRT photographing mode, but the control becomes complicated and the cost is increased. Therefore, it is not desirable to use the electronic still camera of the above type.

Next, an embodiment of a close-up device which can easily print out the subject image recorded in the previous embodiment will be described with reference to the drawings.

FIG. 3 is a block diagram showing this embodiment. In FIG. 3, 20 is an electronic still camera, 24a is a printer control circuit, 24b is a power supply circuit, and 24c.
Is a video signal processing circuit, which is incorporated in the printed wiring board 24. Reference numeral 23 is a printer, 20b is a power output terminal of the electronic still camera 10, and 20a is an electronic still camera 2.
0 video output terminal, 21b power input terminal of the device,
21a is a video input terminal of the device.

The electronic still camera 20 is provided with a rechargeable battery and a recording floppy disk (not shown) inside, and is recorded on the floppy disk by the photographing operation of the photographer. At the time of printing, the electronic still camera 20 is switched to the reproduction mode so that the video output terminal 20
A video signal is output from a and a predetermined voltage is output from the power output terminal 20b. Video output terminal 20a and video input terminal 21a, power output terminal 20b and power input terminal 2
1b is input to the printer side by connecting with a cable or the like not shown. Power supply is the power circuit 24
It is supplied to the printer control circuit 24a and the video signal processing circuit 24c via b. The printer 23 is controlled by the printer control circuit 24a and prints out the signal output from the video signal processing circuit 24c via the head.

FIG. 4 is a perspective view showing the external appearance of the apparatus shown in FIG. The electronic still camera 20 is fixed to the holding portion 21 by a mounting screw (not shown) (for example, a tripod screw) on the lower surface so that an image on the CRT can be taken through a hole 21e provided in the holding portion 21. Reference numeral 22 denotes a hood, the front end of which is opened, and the angle of view is set and light is shielded by pressing the opening 22a against a CRT portion (not shown). 23
Is located outside the effective light path inside the hood by the printer.
23a is a print sheet, 23b is a guide roller, and 23c.
Is a head, and 23b is a motor. A printed wiring board 24 includes a printer control circuit 24a and a power supply circuit 24.
b, a video signal processing circuit 24c and the like are formed.

Photographing is performed by pressing the opening 22a of the hood 22 against a CRT (not shown) and pressing a button 20c on the upper part of the electronic still camera 20 to record it on a loaded floppy disk (not shown). When printing, turn on the power switch 21c to turn on the electronic still camera 2.
With the changeover switch 0 (not shown) set to the reproduction mode, the print button 21d is pressed to print one screen. It should be noted that the printing is performed by setting the electronic still camera 20 to a reproduction state of a track that needs to be printed by using an operation button (not shown).

According to this embodiment, the good subject image obtained in the previous embodiment can be easily printed out. Moreover, since it is arranged outside the effective optical path inside the light-shielding hood, it is possible to provide a close-up device that achieves downsizing.

[0028]

As is apparent from the above description, the present invention provides a light-shielding light metering window for an electronic still camera.
Furthermore, by making it possible to shoot with a constant exposure, it is possible to inexpensively provide a close-up device capable of shooting a good image.

Further, by disposing the printer inside the hood portion outside the effective optical path, it is possible to provide a downsized close-up device capable of easily printing out a good photographed image.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention from the rear side of the apparatus.

FIG. 2 is a perspective view showing an embodiment of the present invention from the front of the device.

FIG. 3 is a block diagram showing another embodiment of the present invention.

FIG. 4 is a perspective view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hood 1b End part 1d Light shielding part 2 Camera holding member 3 Electronic still camera 11 Photometric window 20 Electronic still camera 21 Holding part 22 Hood 23 Printer

Claims (7)

[Claims] 1. A close-up device capable of taking a close-up shot of a subject using an electronic still camera, comprising a hood portion for positioning the subject and the electronic still camera at a predetermined relative position and for shielding external light. A close-up device, comprising: a holding unit that holds the electronic still camera; and a light blocking unit that blocks a photometric window for controlling the exposure of the electronic still camera. 2. The close-up device according to claim 1, wherein the light-shielding portion is formed integrally with the hood portion. 3. The close-up device according to claim 2, wherein the hood portion and the holding portion are integrally formed. 4. The close-up device according to claim 1, wherein the printer is arranged outside the effective optical path inside the hood portion. 5. A close-up method using an electronic still camera, wherein an object and the electronic still camera are positioned at a predetermined relative position, and external light is blocked to control the exposure of the electronic still camera. The close-up method is characterized in that the photometry window for light is shielded and the exposure of the electronic still camera is kept constant for shooting. 6. The close-up method according to claim 5, wherein the exposure is fixed to a value corresponding to the lowest luminance in the exposure control interlocking range. 7. A close-up device capable of taking a close-up of an object using an electronic still camera, wherein the hood part positions the object and the electronic still camera at a predetermined relative position and shields external light. A close-up device, comprising: a holding unit that holds the electronic still camera; and a printer that is disposed inside the hood unit and outside the effective optical path.