JPS63274935A - Stroboscope synchronizing device - Google Patents

Abstract

PURPOSE:To attain synchronous photographing with both master camera and electronic still camera by executing the release of the master camera based on a shutter totally-closing signal after the release of the electronic still camera and closing the shutter of the still camera based on a light emission completing signal after the light emission of a stroboscope. CONSTITUTION:The master camera 1 set in a specified shutter speed and diaphragm, the electronic still camera 2 whose shutter speed is not in a specified diaphragm by setting as a bulb and the light emission part 3a of the stroboscopic device 3 are set toward an object such as a figure, etc. If the release switch 4a of the stroboscope synchronizing device 4 is entered, a shutter opening signal is outputted to the camera 2 based on the command of a CPU so as to execute the shutter release and the release of the camera 1 is executed based on the shutter totally-closing signal in which outputs are altered after that. After the light emission of the stroboscope of the device 3, the device 4 outputs a shutter closing signal to the camera 2 base d on the stroboscope light emission completing signal. Thus, a photograph having the same timing as the camera 1 can be instantly seen.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides strobe synchronization between an electronic still camera (hereinafter referred to as an ES camera) that outputs a shutter fully closed signal and a master camera mainly used by a photographer. Regarding the device, it is designed to allow the ES camera to take pictures in synchronization with the light emission of the strobe device of the master camera.

<Prior Art> Large-format cameras with interchangeable lenses that use 120 or 220 roll film or sheet film are generally used to take studio business photos, commercial photos, and the like.

In studio photography, when shooting a stationary object, the final image will appear exactly as you see it through the viewfinder, but when shooting a moving subject, such as a photograph of a person, the image on the film cannot be confirmed at the time of shooting. , take multiple photos with different shooting angles and poses, and after processing, select the photo you like from among them,
I had enlarged the photo.

<Problems to be Solved by the Invention> As mentioned above, when photographing a person using a large-format camera, for example, when a photographer requests a commemorative photo taken at a photo studio, it is important to keep in mind how the photograph actually looks at the time of the photograph. Since it is impossible to confirm, multiple photos are taken and the photographer is asked to choose which one to enlarge at a later date. The photo is then enlarged, which requires the client to visit the photo gallery several times, which takes time and effort.

Furthermore, if an instant film camera is set at the same time as a portrait photograph is taken using a large format camera, the photograph taken at that time can be viewed on the spot using the instant film camera. However, in studio photography, the flash of a strobe device is synchronized with the shutter release of a large-format camera, so instant film cameras cannot synchronize the flash with this strobe; It was not possible to take photos at the same time.

Furthermore, recently, ES cameras have been commercialized that can electrically take and record images on a magnetic recording medium and allow the taken photos to be viewed immediately on a playback device. however,
Even if this ES camera was set up at the same time as a large-format camera to take pictures, it was not possible to take pictures in synchronization with the strobe light emitted by the strobe device of the large-format camera, like an instant film camera.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a strobe synchronization device that allows a large format camera and an ES camera to take pictures at the same timing in synchronization with the light emission of a strobe device of a master camera.

Means for Solving the Problems> To solve the above problems, the present invention provides an ES camera that outputs a shutter fully closed signal, a master camera that is mainly used by a photographer, and a strobe that is output from the master camera. When a strobe device that emits light using a synchronization signal is connected and the release switch is turned on, a shirt release signal is output to the ES camera set in the bulb to release the shutter release, and then the shutter is fully closed with a change in output. Based on the signal, a shutter release of the master camera set to a predetermined shutter speed is performed, and after the strobe device emits light in response to the strobe synchronization signal, based on the strobe light emission completion signal,
It is characterized by outputting a signal to the ES camera to close the shutter.

Function> When the release switch is turned on, the strobe synchronizer of the present invention releases the shirt shutter of the ES camera set in the valve, and then releases the shirt shutter of the master camera based on the shutter fully closed signal whose output changes. will be held. After the strobe device emits light based on the strobe synchronization signal output from the master camera, a signal is output to the ES camera to close the shutter 7 based on the strobe light emission completion signal, so that the strobe device of the master camera emits light. Photographing by the ES camera is performed in synchronization.

Example of implementation Hereinafter, the present invention will be explained in detail with reference to an illustrated embodiment.

FIG. 1 is a configuration diagram showing an embodiment of the present invention. As shown in this figure, 1 is a large-format camera equipped with a mechanically controlled lens shutter 1a that is mainly used by the photographer, and 2 is an E that outputs a shutter fully closed signal (shutter opening signal).
The ES camera 2 is an S camera, and the ES camera 2 is placed close to the large-format camera 1 facing in the same direction. The ES camera 2 is a camera that electrically photographs and records still image information on a 4.7 cm diameter magnetic disk (50 screens per disk) called a still video floppy. 3 is a strobe device composed of a light emitting part 3a and a main body 3b, and a large format camera 1
The light is emitted by the strobe synchronization signal (XON) from the synchronization contact (X contact) lc. 4 is a strobe synchronization device that synchronizes the shirt release of the Es camera 2 with the light emission of the strobe device 3 of the large format camera 1. The strobe synchronizer 4 is electrically connected to the shirt release terminal 2a of the Es camera 2 and the main body 3b of the strobe device 3, and is mechanically connected to the shirt release terminal 1b of the large format camera 1 by a cable release 5. along with a large format camera 1
A strobe synchronization signal (XON) from the synchronization contact (X contact) IQ is input. And strobe synchronization bag [4
The operation of the release switch 4a provided in the camera, the shutter opening operation of the large format camera 1, the shutter (focal brain shutter) opening/closing operation of the Es camera 2, and strobe light emission are controlled by a CPU (not shown) in the strobe synchronizer 4. Note that the photographing according to this embodiment is performed in a studio using the light emitted by the strobe light of the strobe device 3, and the illumination is dimmed during photographing.

Next, the operation of the present invention will be explained with reference to FIG. 1, FIG. 2 which is a time chart showing the operating state, and FIG. 3 which is flowchart 1. A large format camera 1 set to a predetermined shutter speed and aperture, an Es camera 2 set to a predetermined aperture with a bulb shutter speed, and a light emitting unit 3a of a strobe device 3 are set to face a subject such as a person (not shown). (Step 1).

When the release switch 4a of the strobe synchronizer 4 is turned on at time t1, the shutter release is performed by outputting a shirt shutter open signal to the Es camera 2 based on a command from the CPU, and the shutter shutter is released from time t to time t2. The shutter is fully opened at time t3 after the close-up operation is performed (
Step 2). Further, the strobe synchronizer 4 operates at time t2.
Based on the fall of the shutter fully closed signal inputted from the Es camera 2 via the shirt release terminal 2a, a shutter open signal is output to the large format camera 1, and the shirt release is performed via the cable release 5. Delay (time 1
After the time period from f to time t4), jack la is fully opened at opening time t5 (step 3). When the shutter 1a is fully opened at time tS, a strobe synchronization signal (
XON) is input to the strobe synchronizer 4, and the light emitting section 3a of the strobe device 3 emits light based on the input XON signal (step 4). At this time, large format camera 1 and Es
Since each shutter of camera 2 is fully open, large format camera 1. The Es camera 2 performs photography in synchronization with strobe light emission. After a predetermined shutter time elapses after the strobe device 3 emits the strobe light, the shutter 1 of the large format camera is activated at time t.
As the shutter 1a begins to close, the XON signal becomes OFF, and the shutter 1a is closed at time t7 (step 5). Then, when the XON signal falls at time t, that is, when the strobe light emission completion signal is input, the strobe synchronizer 4 outputs a shutter close signal to the Es camera 2 in response to this input.
In the ES camera, the shutter starts to close at time t6 after a mechanical delay, and the shutter closes at time t9, and the shutter fully open signal rises (step 6). Further, after the shutter 1a of the large format camera 1 is closed at time t7, the shirt release signal is turned off at times t and o, and the release switch 4a is turned off.
is opened and preparations are made for the next shot.

Here, photographing and recording by the Es camera 2 will be explained.

The Es camera 2 forms an optical image incident through a lens system on a COD, which is an image sensor, sequentially transfers image signals from the COD, processes them in a processing circuit, and records them on a magnetic disk via a recording circuit. At this time, since it is necessary to clear the charge accumulated in the COD, Es
A clear signal a is output at the fall of the shutter full-open signal at the start of the shutter opening of the camera 2 (time t2), and the charge of the COD is cleared, and photography is performed with the strobe light of the strobe synchronizer 4.

Then, after the shirt shutter fully closed signal rises due to the shirt shutter closing (time 1.), the transfer signal a2 is output, and predetermined processing is performed in the imaging 4 processing time (not shown), and an image is recorded on the magnetic disk. A signal is recorded for one vertical scanning period (IV). Images recorded on a magnetic disk can be immediately displayed on a television screen using a playback device.

Note that in the above embodiment, an ES camera that outputs a fully open shutter signal was used as the first camera, but the present invention is not limited to this.
The present invention can be applied to any camera that outputs a shutter fully closed signal.

<Effects of the Invention> As described above in detail with the embodiments, according to the present invention, the ES camera can perform photography in synchronization with the strobe light emission of the strobe device of the master camera.
You can instantly view photos taken at the same time as the master camera.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the invention, FIG. 2 is a time chart showing an embodiment of the invention, and FIG. 3 is a flowchart showing an embodiment of the invention. In the drawing, 1 is a large-format camera, 1a is a lens shutter, 2 is an ES camera, 3 is a strobe mount, and 4 is a strobe synchronizer.Patent applicant: Fuji Photo Film Co., Ltd. Agent

Claims (1)

[Claims] An electronic still camera that outputs a shutter fully closed signal, a master camera that is mainly used by the photographer, and a strobe device that emits light based on the strobe synchronization signal output from the master camera are connected, and when the release switch is turned on, the bulb is activated. The shutter of the master camera, which is set to a predetermined shutter speed, is output based on a shutter fully closed signal whose output changes after the shutter is released by outputting a signal to the electronic still camera set to open the shutter. A strobe synchronization device characterized in that, after a release is performed and the strobe device emits light in response to the strobe synchronization signal, a signal is output to the electronic still camera to close a shutter based on a strobe light emission completion signal.