JPS63267927A - Stroboscope synchronizing device - Google Patents

Abstract

PURPOSE:To take a photograph synchronously with the light emission of the stroboscope device of a master camera by connecting the release terminals of the master camera and an electronic still camera so as to connect the stroboscope device which emits the light by the master camera. CONSTITUTION:The shutter release terminal 2a of the ES camera 2 and the main body 3b of the stroboscope device 3 are electrically connected to a stroboscope synchronizing device 4 and also the shutter release terminal 1b of a large- sized camera 1 is mechanically connected to the device 4 through a cable release 5, and then a stroboscope synchronizing signal (XON) fro the synchro contact (X-contact) 1c of the large-sized camera 1 is inputted there. And a CPU 4c in the stroboscope synchronizing device 4 controls a release switch 4a, a shutter selector 4b, the shutter opening operation of the large-sized camera 1, the opening and closing operation of the shutter (focal plane shutter) of the ES camera 2 and the light emission of stroboscope. Thus, photographing by the ES camera can be executed synchronously with the light emission of stroboscope of the large-sized camera.

Description

Detailed Description of the Invention <Industrial Application Field> The present invention relates to a strobe synchronization device for a master camera using silver halide film, such as a large format camera for studio photography, and an electronic still camera. It is designed to allow an electronic still camera to take pictures in synchronization with the light emitted by the device.

<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 know how the photograph is actually taken 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 studio 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, electronic still 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 electronic still camera is set at the same time as a large-format camera to take pictures, it is not possible to take pictures in synchronization with the strobe light emitted by the strobe device of the large-format camera, as is the case with instant film cameras.

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

Means for Solving the Problems> In order to solve the above problems, the present invention connects the shirt release terminal of a master camera using a silver halide film and the shirt release terminal of an electronic still camera, and When a strobe device that emits light according to a strobe synchronization signal output from the camera is connected, and the release switch is turned on, a signal is output to the electronic still camera set in the bulb to open the shutter, and after a predetermined delay time, a strobe device is activated. A shutter release is performed by outputting a signal to open the shutter of the master camera set at the shutter speed, and when the strobe device emits light in response to the strobe synchronization signal,
The present invention is characterized in that a signal is output to the electronic still camera so that the shutter closes.

Function: The strobe synchronizer of the present invention outputs a signal to open the shutter of the electronic still camera (hereinafter referred to as ES camera) set in the bulb when the release switch is turned on, and also outputs a signal to open the shutter of the electronic still camera (hereinafter referred to as ES camera) set in the bulb, and after a predetermined delay time, outputs a signal to open the shutter of the electronic still camera (hereinafter referred to as ES camera). The shutter release is performed by outputting a signal to open the shutter of the ES camera, and when the strobe device emits light according to the strobe synchronization signal output from the master camera, the strobe device of the master camera is activated by outputting a signal to close the shutter of the ES camera. Photographing by the ES camera is performed in synchronization with the light emission.

Practical example 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, which is a master camera using silver halide film, and 2 is an ES camera placed close to and facing the same direction as large-sized 10 camera 1. It is. The E3 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 light emitting part 3a and a main body 3b
This is a strobe device consisting of a strobe synchronization signal (XON
) to emit light. 4 is a strobe synchronizer that synchronizes the shirt release of the ES camera 2 with the light emission of the strobe unit [3 of the large format camera 1 (see FIG. 2). The strobe synchronizer 4 includes a release switch 4a and a shack selector 4b that switches according to the shutter size (#O, #1, #3 in the figure) of the lens shutter 1a.

Further, 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 the shirt release terminal 1b of the large format camera 1 is mechanically connected to the flash synchronizer 4 by the cable release 5. As well as being connected, the synchro contact (X contact) lc of large format camera 1
Input the strobe synchronization signal (XON) from And the above-mentioned release switch 4m.

Shutter selector 4b, large-format camera 1 shutter open operation, and ES camera 2 shutter (focal plane shutter) [J[written].

Strobe light emission is controlled by the CPU 4c in the strobe synchronizer 4 (see FIG. 3).

Next, the operation of the present invention will be explained in FIGS. 1 to 3, FIG. 4 is a time chart showing the operating state, and FIG. 5 is a flowchart.
This will be explained with reference to the figures. A large format camera 1 set to a predetermined shutter speed and aperture, an ES camera 2 set to a predetermined aperture with a valve shutter speed, and a light emitting unit 3a of a strobe device 3 are aimed at a subject (not shown) such as a person. Set (Step 1). Then, when the release switch 4a of the strobe synchronizer 4 is turned on at time t, the CP
Based on the command from U4c, a shirt shutter open signal is output to the ES camera 2, and at the same time, the timer is activated and when the time is up at time t3, a shirt shutter release signal is output to the large format camera 1, and the shirt shutter opening operation is performed via the cable release 5. is started (step 2). The timer operating time between times t and t3 is set by the shutter selector 4b according to the size of the lens shutter 1a of the large format camera 1, and the larger the shutter diameter, the shorter the timer operating time is set. Refinement, mirror up operation time (
(time from time t1 to t2). E
The S camera 2 narrows down its focus between time t and t2, the mirror is raised, and then the shutter is fully opened at time -, and the large format camera 1, after a mechanical delay (time from time t3 to t5), The lens shutter 1a is fully opened at t.

At time t, a strobe synchronization signal (XON) is input to the strobe synchronization device 4 almost simultaneously with the full opening of the lens shutter 1a of the large format camera 1, and the strobe device light section 3a emits light based on the input XON signal (step 3). ). At this time, the shutters of large format camera 1 and ES camera 2 are fully open, so large format camera 1. The ES camera 2 performs photography in synchronization with strobe light emission. Then, the strobe synchronizer 4 is
When the XON signal is input at time t6, the ES
Outputs the shutter close signal to camera 2, and ES camera 2
After a mechanical delay, the shutter starts to close at time t7 and closes at time t8 (step 4).

Further, in the large format camera 1, when a predetermined shutter time has elapsed, the shutter begins to close at time t9 and the XON signal becomes OFF, at time t. After the shutter is closed, the shirt release signal is turned O at time t.
The camera is set to the FF state and the release switch 4a is opened to prepare for the next photograph (step 5).

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 imaging device, and 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, the 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 12), and the charge of the COD is cleared, and photography is performed with the strobe light of the strobe synchronizer 4.

Then, after the shutter fully closed signal rises due to the shutter closing (time 1.), the transfer signal a2 is output, and an image signal processing circuit (not shown) performs predetermined processing to transfer the image signal to the magnetic disk in one vertical direction. Only the scanning period (IV) is recorded. Images recorded on a magnetic disk can be immediately displayed on both sides of a television using a playback device.

Note that, although the above-mentioned embodiment was a case of a large-format camera having a mechanically controlled lens shutter, a large-format camera having an electronically controlled lens shutter or a medium-sized camera having a focal plane shutter may also be used. In this case, it is necessary to stop down the medium-sized camera and raise the mirror, so the four timer operations (1 to 13) are shortened.

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

[Brief explanation of drawings]

Fig. 1 is a configuration diagram showing an embodiment of the present invention, Fig. 2 is a perspective view showing a strobe synchronization device, Fig. 3 is an explanatory diagram showing a signal system of the device, and Fig. 4 is a diagram showing the invention. FIG. 5 is a flowchart showing an embodiment of the present invention. In the drawing, 1 is a large format camera, 1a is a lens shack, 2 is an ES camera, 3 is a strobe device, and 4 is a strobe synchronizer.

Claims (1)

[Claims] Connect the shutter release terminal of a master camera that uses silver halide film and the shutter release terminal of an electronic still camera, connect a strobe device that emits light according to a strobe synchronization signal output from the master camera, and turn on the release switch. A shutter release is performed by outputting a signal to open the shutter of the electronic still camera set in the bulb, and after a predetermined delay time, outputting a signal to open the shutter of the master camera set to a predetermined shutter speed. A strobe synchronization device, characterized in that when 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.