JP2580164B2 - Shooting control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an electronic still camera (hereinafter, referred to as an ES camera) that outputs a shutter fully open signal and a shutter fully closed signal,
The present invention relates to a photographing control device which mainly uses a strobe device of a master camera which outputs a shutter fully open signal and independently emits light at substantially the same timing to perform photographing by an electronic still camera and photographing by a master camera. .

<Prior Art> A large-format interchangeable-lens camera using a 120,220 roll film or a sheet film is generally used for photographing business photographs, commercial photographs, and the like taken in a studio. When shooting a still object as a subject in Sudagio shooting, the finished photo shows the image as seen through the viewfinder as it is. Then, after changing the photographing angle and pose and photographing a plurality of images, the photographer selected the desired photograph from among them and enlarged the photograph.

<Problems to be Solved by the Invention> As described above, photographing a person using a large format camera,
For example, when a photographer asks a photographer to take a commemorative photo in a photo studio, it is not possible to confirm how the photograph is actually taken at the time of shooting, so the photographer asks the photographer to shoot a plurality of photos and enlarge it from within a few days I have you choose. Then, since the photograph is enlarged, the client has to go to the photo studio again, which takes time and effort.

Recently, an ES camera has been commercialized that can electrically capture and record an image on a magnetic recording medium and can immediately view the captured image by a playback device. When shooting with this ES camera set at the same time as the large format camera, if the aperture depth and film sensitivity of the ES camera and the large format camera are significantly different, use the dedicated strobe device for each shooting There is a need. However, since the strobe light emission of each of the strobe devices of the ES camera and the large format camera is performed independently, it was not possible to control the light emission timing of each strobe device and take a photograph at almost the same timing.

The present invention has been made for the purpose of solving the above-mentioned problems, and a strobe device of each of a master camera and an ES camera is provided.
It is an object of the present invention to provide a photographing control device that performs photographing by an electronic still camera and photographing by a master camera by independently emitting light at substantially the same timing.

<Means for Solving the Problems> An electronic still camera that outputs a shutter fully open signal and a shutter fully closed signal, a master camera that is used mainly by a photographer and outputs a shutter fully open signal, and a first strobe synchronization signal A first strobe device that emits light when input is connected to a second strobe device that emits light when a second strobe synchronization signal is input, and a common release switch is used for the electronic still camera and the master camera. When the release switch is turned on, the electronic still camera is shutter-released and the shutter is fully opened, and then the shutter full-open signal of the electronic still camera is input, thereby receiving the first strobe synchronization signal. To cause the first strobe device to emit light, and based on the first strobe synchronization signal, After the shutter of the master camera is released and the shutter is fully opened, the shutter full-open signal of the master camera and the shutter full-close signal of the electronic still camera are input to output the second strobe synchronization signal and output the second strobe synchronization signal. Wherein the strobe device emits light.

<Operation> After the shutter release of the ES camera, the first strobe synchronization signal (XON) output when the shutter of the ES camera is fully opened.
As a result, the first strobe device of the ES camera emits light, and the shutter opening of the master camera is started by the first strobe synchronization signal (XON). Then, the shutter full-close signal of the ES camera output by fully closing the shutter of the ES camera and the shutter full-open signal of the master camera output by fully opening the shutter of the master camera are input together to generate a second strobe synchronization signal. Is output, and the second strobe device of the master camera emits light. As a result, the master camera and the ES camera shoot at almost the same timing and satisfy the respective independent exposure conditions.

<Embodiment> Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings.

FIG. 1 is a configuration diagram showing an embodiment of the present invention. As shown in FIG. 1, reference numeral 1 denotes a large-format camera equipped with a mechanically-controlled lens shutter 1a mainly used by a photographer, and 2 denotes a shutter fully-closed signal (shutter) arranged in a close position in the same direction as the large-format camera 1. The ES camera outputs a strobe synchronization signal (XON) that is a shutter fully open signal when the shutters are fully opened. The ES camera 2 is a 4.7 cm diameter magnetic disk (1 still video floppy).
This camera electrically captures and records still image information on 50 screens. Reference numeral 3 denotes a strobe device for the large format camera 1 composed of a light emitting unit 3a and a main body 3b, 4 denotes a strobe device for the ES camera 2, and 5 denotes an image pickup device in which the strobe devices 3 and 4 are strobed independently at substantially the same timing. Control. The photographing control device 5 includes a shutter release terminal 2a of the ES camera 2, a main body 3b of the strobe device 3, a strobe device 4, and a large format camera.
1, Each synchro contact (X contact) 1c, 2 of ES camera 2
b is electrically connected, and the shutter release terminal 1 b of the large format camera 1 is mechanically connected by a cable release 6. Then, the strobe sync signal (XON) s ₁ is a shutter full open signal output from the large format 1, E
Shutter is fully closed signal s ₂ of S camera 2 is input to the AND gate 7 in the photographing control 5 (see FIG. 2). Reference numeral 5a denotes a release switch for performing a shutter release of the ES camera 2. Note that the photographing according to the present embodiment is performed in the studio with the light of the strobe light emission of the strobe photographing 3 and 4, and the lighting is darkened during the photographing.

Next, the strobe light emitting method of the present invention will be described with reference to FIGS. 1 and 2 and FIG. 3 which is a time chart showing an operation state. The large format camera 1 and the ES camera 2 set to predetermined shutters and apertures, the light emitting section 3a of the strobe device 3, and the strobe device 4 are set to face a subject (not shown) such as a person. Then, the release switch 5a of the photographing control device 5
The when introduced at time t _1, the shutter release of ES camera 2 is started, interactive time t ₁ between the time t _2, the mirror-up operation is performed thereafter, the shutter is fully opened at time t _3. When the shutter is fully opened at time t _3, the strobe sync signal (XON) is a shutter full open signal, and outputs the flash device 4 via the imaging control device 5 from the synchro contact 2b, flash light emission is performed. In addition, the photographing control device 5
strobe synchronization signal input from ES camera 2 at t ₃ (XO
Outputs shutter open signal in large format 1 based on the rising of N), performs a shutter release via the cable release 6, the time from the mechanical delay (time t ₃ to time t ₄₎
After the shutter 1a is fully opened at time t _5. Shutter at the time t ₅
When 1a is fully opened, is output from the sync contact (X contact) 1c a strobe sync signal (XON) s _1, the AND gate 7 of the imaging control unit 5. Then, ES camera 2, after flash emission of the flash device 4, the shutter begins to close at time t ₆ when a predetermined shutter time elapses, the strobe sync signal is OFF, the shutter is closed at time t _7. Time t ₇
In the shutter is closed, the shutter release shutter from the terminal 2b total closure signal s ₂ of ES camera 2, and outputs to the AND gate 7 of the imaging control unit 5. Then, the AND gate 7 at time t _7, the strobe sync signal (XON) s ₁ output from the sync contact 1c large format camera 1, a shutter full closure signal s ₂ output from the shutter release terminal 2b of ES camera 2 When is inputted together, the output signal s ₃ is output. An output signal s ₃ output from the AND gate 7 is a strobe synchronization signal (XON) for causing the strobe device 3 to emit strobe light,
The strobe synchronization signal (XON) is output from the main body 3b of the strobe device 3, and the light emitting section 3a emits light. Strobe device 3
After the strobe light emission, large format 1, the shutter 1a begins to close at time t ₈ after a lapse of the predetermined shutter time, a strobe sync signal s ₁ is OFF, the closing shutter 1a at time t _9. After the shutter 1a of large format 1 is closed at time t _9, by opening the release switch 5a at time t _10, the next photographing preparation is performed.

Here, shooting and recording by the ES camera 2 will be described.
The ES camera 2 forms an optical image incident through a lens system on a CCD serving as an image sensor, sequentially transfers image signals from the CCD, processes the image signals with a processing circuit, and records the processed image signals on a magnetic disk via a recording circuit. At this time, since it is necessary to keep the electric charge accumulated in the CCD in the clear state, the start of the shutter opening of the ES camera 2 (time t ₂₎ cleared by the fall of the shutter total closing signal according to the signal a ₁ is output Then, the CCD is set in the electric charge clear state, and photographing is performed by the strobe light emission of the strobe device 3. Then, after the rise of the shutter is fully closed signal by the shutter closed (time _7), transfer signal a ₂ is output, the image signal processing circuit image signal to the magnetic disk a predetermined process is performed by (not shown) is one vertical It is recorded only during the scanning period (1 V). The image recorded on the magnetic disk can be immediately displayed on a television screen by the playback device.

<Effects of the Invention> As described above in detail with the embodiments, according to the present invention, the respective strobe devices of the master camera and the ES camera can emit light independently at substantially the same timing. Therefore, even if the aperture depth and film sensitivity of the master camera and the ES camera are significantly different, the ES camera can shoot at almost the same timing as the master camera, so that signals at almost the same timing as the master camera are immediately output. Can be seen.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing a main part of the present invention, and FIG. 3 is a time chart showing an embodiment of the present invention. In the drawings, 1 is a large format camera, 1a is a lens shutter, 2 is an ES camera, 3 and 4 are strobe devices, 5 is a photographing control device, and 7 is an AND gate.

Claims (1)

(57) [Claims] 1. An electronic still camera for outputting a shutter fully open signal and a shutter fully closed signal, a master camera mainly used by a photographer to output a shutter fully open signal, and light emission when a first strobe synchronization signal is input. A photographing control device having a first strobe device connected to a second strobe device that emits light when a second strobe synchronization signal is input, and a release switch common to the electronic still camera and the master camera. When the release switch is turned on, the electronic still camera is shutter-released and the shutter is fully opened, and the shutter full-open signal of the electronic still camera is input to output the first strobe synchronization signal and output the first strobe synchronization signal. Fire the first strobe device,
And after the master camera is shutter-released based on the first strobe synchronization signal and the shutter is fully opened,
A photographing control wherein the second strobe synchronizing signal is output and the second strobe device emits light by inputting a shutter fully open signal of the master camera and a shutter fully closed signal of the electronic still camera. apparatus.