JP3154799B2 - Imaging equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographing apparatus having an auto bracket function for performing continuous photographing while automatically changing the exposure time.

[0002]

2. Description of the Related Art In this type of photographing apparatus, when the number of remaining films is smaller than the set number of frames for auto bracket photographing at the time of auto bracket photographing, even if a series of photographing is in progress, the film ends. At the same time, the configuration in which the auto bracket photographing mode is canceled was generally used. According to this configuration, it is necessary to set the parameters of the auto bracket photographing every time the film is completed, and there is a disadvantage that the setting operation is troublesome. As one of means for remedying such inconvenience, JP-A-1-297
As disclosed in Japanese Unexamined Patent Publication No. 636, the auto bracket shooting mode is not canceled even if the film is ended during the auto bracket shooting, and the auto bracket shooting is started again from the first frame in the shooting mode after the film is loaded. There is a photographing apparatus in which the parameter is automatically reset.

[0003]

SUMMARY OF THE INVENTION However, Japanese Patent Application Laid-Open No.
In the photographing apparatus disclosed in Japanese Patent Publication No. 297636, when a film is completed in the middle of a series of photographing, after the film is exchanged, it is necessary to superimpose the photograph from the first frame to the frame where the photographing was interrupted on the previous film. However, there is a problem that the film is wasted. Also, when the film ends during Auto Bracket shooting, whether the Auto Bracket shooting ended at the same time as the end of the film, or whether the Auto Bracket shooting was interrupted, and if so, at what frame in the Auto Bracket shooting For example, there is a problem that the correspondence between a series of frames for auto bracket photographing and photographic film cannot be determined until the film is actually developed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to, when a film is ended during auto bracket shooting, change the film and then perform auto bracket shooting from the interrupted frame. An object of the present invention is to provide a photographing apparatus having an auto bracket photographing function capable of continuing.

[0005]

Photography apparatus having an auto bracket shooting function according to the present invention SUMMARY OF THE INVENTION may, dew entered
Continuously while changing the exposure time based on the output correction value
Photo with auto bracket shooting function that can shoot pieces
When controlling the auto bracket shooting in the shooting device,
A control means for storing the setting information, a film end detecting means for detecting the end of the film and outputting an end signal, and a table for displaying the setting information of the auto bracket shooting.
Indicating means for receiving the termination signal.
Auto Bracket shooting status information when
Also, after changing the film, shooting based on the status information
Exposure compensation value corresponding to the number of shot frames when
The total number of shots that are loaded in advance and the number of shots is set in advance
Is made as a feature that it has a so that can continue to auto bracket to reach. In addition, the present invention
The photographing device is preferably for a microscope.
Sign. Further, the photographing device of the present invention is preferably
The control means records when the termination signal is input.
Remember the last auto bracket shooting status information
The information about the frames that have been shot is stored in the
After changing the exposure, the same exposure compensation value
It is characterized in that the shooting can be restarted from.

[0006]

Since the end of the film during the auto bracket shooting is detected by the end-of-film detecting means, the shooting information such as the number of frames at the end of the film and the exposure correction value can be accurately stored. Therefore, it is not necessary to set the auto bracket photographing again after the film is exchanged, and the auto bracket photographing can be continued from the frame where the photographing was interrupted, and a clear photographing result can be obtained with a minimum necessary number of photographing.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an optical path of a photographing apparatus when the present invention is implemented as a photographing apparatus for a microscope. In the figure, 1 is a sample, 2 is an objective lens through which light from the sample 1 passes, 3 is a prism for bending the optical path, and 4 is a prism 3
Are located behind the photographic eyepiece, 5 is a light beam splitting prism, 6 is a projection lens through which one of the light beams split by the prism 5 passes, and 7 is disposed at an image forming position of the projection lens 6, which will be described later. A light receiving element 8 in the photometric unit 17 is a shutter for passing and blocking the other light beam split by the prism 5 under the control of the control unit 11 described later, and a camera back 9.

FIG. 2 is a block diagram showing the configuration of a control processing section for controlling the photographing apparatus of the present embodiment. In the figure, 1
Reference numeral 1 denotes a control unit that controls not only a shutter 8 and a camera back 9 but also basic functions of a photographing device by a CPU.
Reference numeral 2 denotes a setting unit for setting parameters necessary for auto bracket shooting such as an exposure correction value and the total number of shots, and 13 a display unit for monitoring shooting conditions such as an exposure correction value, a current exposure value, and the number of frames. Reference numeral 14 denotes a shutter driving unit that receives a control signal from the control unit 11 to open and close the shutter 8, 15 denotes a film feeding unit that winds and rewinds the film of the camera back 9, and 16 denotes a film feeding unit. A film end detecting unit for detecting the end of the film by detecting a change in the motor current value when the film winding motor is locked, and 17 includes a light receiving element 7 and measures the light of the sample 1 as a subject. Is a photometric unit that performs

The parameters of the auto bracket photographing set by the input switch of the setting unit 12 are sent to the control unit 11, and various information during photographing including these parameters are sent from the control unit 11 to the display unit 13 to be monitored. . The control unit 11 stores the set parameters in a memory in the control unit 11, calculates an exposure time for each frame based on the parameters and the photometric information from the photometric unit 17, and controls the shutter drive unit 14 and the film A control signal is sent to the feeding unit 15 to operate the shutter 8 and the camera back 9 to control a series of operations of auto bracket photographing. When the film feeding unit 15 performs the winding operation and the film end detecting unit 16 detects the film end, the film end detecting unit 16
The film end signal is sent to the control unit 11 from the
Numeral 1 stores the setting and the state of the auto bracket photographing when the film end signal is input, and displays the setting on the display unit 13.

Next, an operation sequence in the auto bracket photographing according to the present embodiment will be described in detail with reference to FIG. 3 showing a processing procedure in the control section 11 in a flowchart. It is assumed that the total number N of frames to be photographed and the exposure correction value for each frame, which are parameters for the auto bracket photographing, are input and set in advance and stored in the memory in the control unit 11. At the start of the normal auto bracket shooting, the number K of film frames to be shot is set to the initial value "1" except when shooting is interrupted due to the end of the film described later. In the figure, first, in step S1, an exposure correction value corresponding to the number K of photographed frames is loaded, and
In step 2, the actual exposure time is calculated from the exposure correction value and the photometric information from the photometric unit 17. The shutter 8 is controlled by controlling the shutter drive unit 14 based on the exposure time calculated in S3, and thereby a microscopic image of the sample 1 is captured.

In S4, the film feeding unit 15 is controlled to wind up the film of the camera back 9, and in S5, it is determined whether or not the film end detecting unit 16 has detected the end of the film. If the film is not at the end,
In S6, the number of frames K to be shot is set in advance to the total number N of frames to be shot.
Is determined, when K = N, that is, when a series of auto bracket shooting is completed in the exposure operation, the number K of shot frames is set to an initial value “1” in S7, and shooting is ended. If K <N, that is, if it is still in the middle of shooting, "1" is added to the number K of shot frames in S8, and the process from S1 is repeated.

If the end-of-film detecting unit 16 detects the end of the film in S5, the parameters of the auto bracket photographing initially set in S9 and the current number K of photographed frames are stored in the memory in the control unit 11. The photographing information at the end of the film is displayed on the display unit 13 while being stored as it is. Then, in S10, the subsequent shutter release is prohibited, and in S11, the film feeding unit 1
5, the film is rewound, and when the rewound is completed, the shutter release is permitted in S12.

Since the parameters before the photographing is interrupted and the number K of photographed frames are stored, after the film is exchanged,
The auto bracket shooting is started again, and the exposure correction value corresponding to the number K of frames to be shot when the shooting is interrupted is automatically loaded in S1, and thereafter, the number K of frames to be shot reaches the preset total number N of frames to be shot. Until the auto bracket shooting is performed.

The actual film loading operation according to the above operation sequence will be described with reference to FIG. 4A and 4B are diagrams showing changes in the number of films and the exposure value when the auto bracket photographing is performed in the present embodiment, wherein FIG. 4A shows the end of the first film, and FIG. 4B shows the start of the next film. Each part is shown. In this case, the setting parameters are as follows: the exposure step per frame is one step, the total number of photographed frames N is five, and normal photographing without using the auto bracket function is performed up to the first thirty-third film in the drawing. Then, the auto bracket photographing with the above settings was started from the 34th film. Since the exposure correction value of the 34th sheet of the first film is "-2", 3
Shooting is performed at the set exposure steps up to the 5th and 36th films, and when the end of the film is detected on the 37th film, the parameters of the auto bracket shooting and the current shooting frame variable K And monitor these photographing information at the end of the film. Then, the film is rewound after the shutter release is prohibited, and the film is replaced after the rewinding is completed. In this case, there is a possibility that a clear photographing result cannot be obtained for the 36th photographing because the film length is insufficient. Therefore, the photographing of the next film starts from the same exposure correction value as the 36th film of the first film in which the photographing was interrupted, and the auto bracket photographing continues to the third film.

Since the present embodiment is constructed as described above, even if the film is terminated during the auto bracket shooting and the shooting is interrupted, it is not necessary to reset the auto bracket shooting again after replacing the film. Since the shooting information at the end of the film is stored, after changing the film,
The photographing can be continued from the number of frames and the exposure correction value at which the photographing was interrupted, and a clear photographing result can be reliably obtained without wasting the film. In addition, since shooting information at the time of film end and shooting is interrupted is monitored, the correspondence between a series of auto bracket shooting frames and shooting film can be determined during shooting, and recording and organizing of shooting can be performed. In addition, it is possible to prevent unnecessary and unsuccessful shooting such as duplication of shooting beforehand.

As the film end detecting means, the number of films is integrated for each photographing, and this integrated value is compared with the D of the film.
A means for detecting the end of the film by comparing the number of recordable images by the X code, a timer is started after the start of the film winding drive, and a case where the winding complete signal is not output within a predetermined time is recognized as the end of the film, and the film is detected. Means for detecting the termination may be applied.

[0017]

As described above, according to the present invention, even if the film is stopped during the auto bracket shooting and the shooting is interrupted,
Not only does it not have to re-set the auto bracket shooting after changing the film, but also a clear shooting result can be obtained with a minimum necessary number of shootings.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an optical path of a photographing apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a control processing unit according to the embodiment.

FIG. 3 is a flowchart showing a processing procedure in a control unit 11;

FIGS. 4A and 4B show a case where auto bracket photographing is performed in the embodiment, where FIG.
FIG. 7 is a diagram showing how the number of films and the exposure value change at the beginning of the next film.

[Explanation of symbols]

8 Shutter 9 Camera back 11
..Control unit 12 setting unit 13 display unit 14
..Shutter driving section 15 ... Film feeding section 16 ... Film end detecting section 17 ... Photometry section

Claims (3)

(57) [Claims] 1. A photographic apparatus having an auto bracket shooting function capable of photographing a continuous plurality of frames while changing the exposure time based on the input exposure compensation value, setting information to control the auto bracket shooting
Display control means for storing, the film end detecting means for outputting a termination signal by detecting the film end, the setting information of at least the auto bracket shooting the
Display means for performing the operation when the termination signal is input.
Stores bracket shooting status information and fills
When the shooting is interrupted based on the status information after the
Automatically loads the exposure compensation value corresponding to the number of shot frames,
Until the number of shots reaches the preset total number of shots,
Photography apparatus being characterized in that the so that can continue Bracket shooting. 2. The photographing device is for a microscope.
The photographing device according to claim 1, wherein: 3. The control means receives the termination signal.
Auto Bracket shooting status information stored when touched
As the information about the piece whose shooting was completed last,
After changing the film, the same as the last shot taken
The feature is that shooting can be restarted from the exposure compensation value
The photographing device according to claim 1.