JPH0667271A - Camera with successive shooting function - Google Patents

Abstract

PURPOSE:To freely select a successive shooting speed corresponding to the speed of a subject as a photographer intends by outputting a successive shooting speed adjustment signal for adjusting the operation speed of a motor to a control circuit during successive photographing. CONSTITUTION:Once a variable successive speed mode is selected, a photographic mode switching circuit 1 turns on a switch 6 and a successive shooting speed adjusting circuit 5 and a CPU 2 are connected. Successive shooting is started with a shutter release button ON and the successive shooting speed is adjusted through the operation of the successive shooting speed adjusting circuit 5 to perform one-frame photographing. When the shutter release button is still ON, the successive photographing is repeated until the button is turned off. Namely, the winding speed of a film motor 4 is adjusted after the one-frame photographing and a control signal is outputted to a CPU 2. Therefore, even if the moving speed of the subject varies during the successive photographing, the successive shooting speed can be increased following up the variation in the moving speed to enable detailed photographing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera having a function of continuously shooting a subject, and more particularly to a function of making it possible to change a shooting speed during continuous shooting.

[0002]

2. Description of the Related Art FIG. 5 is a block diagram of a conventional camera with a continuous shooting function. In the figure, 2 is a central processing unit (C
A central processing unit (PU), which outputs a control signal according to each shooting mode to a shutter circuit 3 that controls the opening / closing operation of the shutter and a film motor 4 that controls film winding / rewinding. Also, 7
Is a continuous shooting speed setting circuit, and the CPU 2 is operated via a switch 6 controlled by the output of the shooting mode switching circuit 1.
Is configured to be connected to.

Next, the operation will be described. FIG. 6 is a flowchart showing a continuous shooting method in the conventional camera with a continuous shooting function. The operation will be described below according to this flowchart.

First, from the ready for shooting (step S1), the shooting mode switching circuit 1 selects a shooting mode from a single shooting mode and a continuous shooting mode (step S2).

When the "continuous shooting mode" is selected, the shooting mode switching circuit 1 turns on the switch 6, and the continuous shooting speed setting circuit 7 and the CPU 2 are connected. Next, the continuous shooting speed setting circuit 7 selects a desired speed from several kinds of continuous shooting speeds to set the continuous shooting speed (step S11).

When the shutter button is turned on, continuous shooting is started (step S3), and shutter opening (step S5) → exposure (step S6) → shutter closing (step S7) completes the shooting of one frame of film. After that, the film is wound at the set winding speed (step S8). After this, if the shutter button is still on, the process returns to step S5 to open the shutter, and thereafter, the series of shooting is repeated (continuous shooting operation), and shooting is completed when the shutter button is turned off. (Step S10).

[0007]

The conventional camera with continuous shooting function is configured as described above, and the film winding speed during continuous shooting is set before the continuous shooting is performed. There is a problem in that the winding speed set in step 1 cannot be set again and, for example, if the speed of movement of the subject changes during continuous shooting, it is not possible to shoot detailed movements.

The present invention has been made to solve the above problems, and an object thereof is to obtain a camera with a continuous shooting function capable of adjusting the continuous shooting speed even during continuous shooting.

[0009]

A camera with continuous shooting function according to the present invention comprises continuous shooting speed adjustment signal output means for varying the winding speed of a film motor during continuous shooting.
The shutter is released in conjunction with the winding speed.

Further, the continuous shooting speed adjustment signal output means outputs a continuous shooting speed adjustment signal for performing continuous shooting at a speed corresponding to the degree of pressing of the shutter button or the moving speed of the object, or a speed programmed in advance. It is designed to be output.

[0011]

In the present invention, the operating speed of the film motor is changed and the winding speed is controlled by the continuous shooting speed adjustment signal input to the CPU which is the control circuit during continuous shooting. At the same time, the CPU controls the shutter circuit so that the shutter is released according to the winding speed.

[0012]

【Example】

Example 1. A camera with continuous shooting function according to an embodiment of the present invention will be described below with reference to FIG. In FIG.
The same reference numerals as those in FIG. 5 indicate the same or corresponding portions, and a continuous shooting speed adjusting circuit 5 is provided in place of the conventional continuous shooting speed setting circuit.

Next, the operation will be described. FIG. 2 is a flowchart showing the continuous shooting method in this embodiment.
The continuous shooting method according to this embodiment will be described below with reference to this flowchart.

First, from shooting ready (step S1) in which shooting is possible, the shooting mode switching circuit 1 selects one of the "single shot mode", "constant speed continuous shooting mode" and "continuous shooting speed variable mode". A shooting mode is selected (step S2).

When the "continuous shooting speed variable mode" is selected, the switch 6 is turned on by the shooting mode switching circuit 1,
The continuous shooting speed adjusting circuit 5 and the CPU 2 are connected. next,
When the shutter button is turned on, continuous shooting is started (step S3). In this state, the continuous shooting speed adjustment circuit 5 is operated to adjust the continuous shooting speed (step S4), and the shutter is opened (step S5) → exposure (step S6) →
After the shutter is closed (step S7), one frame of the film is photographed, and then the film is wound at the adjusted winding speed (step S8).

Further, if the shutter button is still on, the continuous shooting speed adjustment by the continuous shooting speed adjusting circuit 5 is performed again, and the continuous shooting speed at that time is set. A series of shootings is repeated until the shutter button of is turned off (continuous shooting operation), and the shooting is completed when the shutter button is turned off (step S10).

As described above, according to this embodiment, the continuous shooting speed adjusting circuit 5 is provided, and the circuit 5 is operated in the continuous shooting speed variable mode.
Is connected to the CPU 2 and a control signal is output to the CPU 2 so that the winding speed of the film motor 4 is adjusted after one frame shooting, so that the winding speed of the film motor 4 can be changed during continuous shooting. You can
For example, even if the moving speed of the subject changes during continuous shooting, the shooting speed can be increased by following the change to enable detailed shooting.

Example 2. Next, a camera with continuous shooting function according to a second embodiment of the present invention will be described with reference to FIG. In this embodiment, as shown in FIG. 3, the shutter button 9
A shutter button push-in degree detection circuit 8 for detecting the push-in degree is provided, and the output signal of the continuous shooting speed adjusting circuit 5 is controlled by the circuit output.

That is, the degree of depression of the shutter button 9 is detected.
By setting the continuous shooting speed to be high, continuous shooting can be performed at a speed according to the moving speed of the subject, and the operability can be further improved as compared with the above embodiment.

Example 3. Next, a camera with continuous shooting function according to a third embodiment of the present invention will be described with reference to FIG. Currently, a predictive drive focus that predicts the amount of movement of a moving object within this time period based on the results of multiple distance measurements in the past, and drives the lens so that it is in best focus during exposure. Although a function has been developed, in this embodiment, as shown in FIG. 4, the continuous shooting speed adjusting circuit 5 is operated based on the information from the subject speed detecting circuit 10 to adjust the continuous shooting speed. It was done like this.

By doing so, the existing function can be diverted to the camera with the predictive drive focus function, and the camera with the continuous shooting speed varying function which is excellent in operability can be easily realized.

Example 4. Next, a camera with continuous shooting function according to a third embodiment of the present invention will be described with reference to the drawings. In this embodiment, the continuous shooting speed adjusting circuit 5 has a program function so that the continuous shooting speed can be set before photographing, and the continuous shooting speed is changed according to the program while the shutter button is on. Is.

By doing so, automatic shooting can be performed at an arbitrary continuous shooting speed pattern according to the photographer's intention, and, for example, reproducibility when shooting with the same continuous shooting pattern is improved. You can

[0024]

As described above, according to the camera with continuous shooting function of the present invention, the continuous shooting speed adjusting circuit is provided so that the continuous shooting speed can be varied during continuous shooting. Depending on the person's intention, it becomes possible to freely select the continuous shooting speed according to the speed of the subject, and for example, high-speed continuous shooting is possible in the scene where detailed shooting is desired, which has the effect of increasing the freedom of shooting. is there.

[Brief description of drawings]

FIG. 1 is a block diagram showing a camera with a continuous shooting function according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing a continuous shooting method by the camera with a continuous shooting function.

FIG. 3 is a block diagram showing a camera with continuous shooting function according to a second embodiment of the present invention.

FIG. 4 is a block diagram showing a camera with continuous shooting function according to a third embodiment of the present invention.

FIG. 5 is a block diagram showing a conventional camera with a continuous shooting function.

FIG. 6 is a flowchart showing a continuous shooting method by a conventional camera with a continuous shooting function.

[Explanation of symbols]

 1 Shooting Mode Switching Circuit 2 Central Processing Unit (CPU) 3 Shutter Circuit 4 Film Motor 5 Continuous Shooting Speed Adjustment Circuit 6 Switch 7 Continuous Shooting Speed Setting Circuit 8 Shutter Button Depth Depth Detection Circuit 9 Shutter Button 10 Subject Speed Detection Circuit

Claims (4)

[Claims] 1. A film motor for winding a film for photographing, a control circuit for controlling the operation of the motor and controlling the operation speed of a shutter according to the film motor, and switching between a single-shot photographing mode and a continuous photographing mode. In a camera with continuous shooting function equipped with a shooting mode switching signal output means for outputting a mode switching signal to the control circuit, a continuous shooting speed adjustment signal for adjusting the operating speed of the film motor during continuous shooting is provided. A camera with a continuous shooting function, comprising a continuous shooting speed adjustment signal output means for outputting to the control circuit. 2. The camera with continuous shooting function according to claim 1, further comprising shutter button pressing degree detecting means for detecting a pressing degree of the shutter button, and a continuous shooting speed corresponding to the output of the pressing degree detecting means is obtained. A camera with a continuous shooting function, wherein the continuous shooting speed adjustment signal output means is controlled so that such a continuous shooting speed adjustment signal is output. 3. The camera with continuous shooting function according to claim 1, further comprising: a subject speed detecting means for detecting a moving speed of the subject, wherein the continuous shooting speed is obtained according to the output of the speed detecting means. A camera with a continuous shooting function, characterized in that the continuous shooting speed adjustment signal output means is controlled so that a speed adjustment signal is output. 4. The camera with continuous shooting function according to claim 1, wherein the continuous shooting speed adjustment signal output means outputs a continuous shooting speed adjustment signal for obtaining a continuous shooting speed programmed in advance before shooting. A camera with a continuous shooting function that is characterized by being