JPH09197490A - Finder for consecutive photographing camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily recognize a specified photographing distance. SOLUTION: Plural photographing lenses are provided on a film unit with lenses, and the film unit performs the photographing of plural times with one release operation. The finder 13 of the film unit with the lenses is an inverted Galilean finder and is constituted of an objective lens 40 and an eyepiece 41. A ring-shaped target mark 40a is integrally formed on the eyepiece side of the lens 40, and a micro lens 41a is integrally formed on the eyepiece side of the eyepiece 41. The photographing range of the photographing lenses 12a to 12h can be observed as an object image by light passing through the non- forming areas of target mark 40a of the lens 40 and the lens 41a of the eyepiece 41 in the case of viewing from the finder, the image of the mark 40a can be observed in the vicinity of the object image through the microlens 41a the photographing distance is decided by aligning the image of the mark 40a with the face of the main object, so that a commendable photographing distance capable of holding the entire image of golf swing inside the photographing range can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viewfinder for a continuous shooting camera for observing a shooting range of a continuous shooting camera which performs a plurality of shootings with one release operation of the viewfinder.

[0002]

2. Description of the Related Art A continuous shooting camera that sequentially shoots a subject with a time lag is known (for example, "Fuji Continuous Shooting Cardiabune (trade name)"). In such a continuous shooting camera, when a release operation is performed once, for example, each frame of a photographic film set behind the aperture is divided into a plurality of frames, and each frame is sequentially exposed, so that the movement of each frame is changed. It is possible to take a still picture image.
Therefore, for example, in sports or the like, the form at each moment can be observed as a still image, which is very convenient.

By the way, in the above continuous shooting camera,
For example, if the shooting distance is too short when shooting a person making a golf swing as the main subject, when the head of the golf club reaches the top during the swing, for example, when the head of the golf club shoots There is a case in which there is an inconvenience such that the whole image of the swing is difficult to be grasped because it is out of the range. For this reason, the continuous shooting camera sets the optimum shooting distance as the recommended shooting distance for shooting a subject having a movement such as a golf swing, and the photographer sets the shooting distance to be the recommended shooting distance. By determining the shooting position and performing shooting, it is possible to prevent the above inconvenience.

[0004]

However, although the above-mentioned recommended photographing distance varies depending on the focal length of the photographing lens, it is generally set to a relatively long distance of about 6 m to 7 m. Therefore, there is a problem that it is difficult for an inexperienced photographer to determine the photographing position during framing.

The present invention has been made in order to solve the above-mentioned problems, and when shooting a subject having a movement such as a golf swing continuously, the optimum shooting distance can be easily determined through a viewfinder. An object is to provide a viewfinder for a photographic camera.

[0006]

In order to achieve the above-mentioned object, the present invention provides a target mark of a predetermined size on the lens surface of an objective lens according to the first aspect of the invention, and an eyepiece. A positive power microlens for observing the target mark is provided on the lens surface of the lens, and by observing the target mark through the microlens at the time of observing the viewfinder image, the whole body or one person of a person at a constant shooting distance is observed. The size of the image of the portion and the image of the target mark are made substantially coincident with each other in the viewfinder screen so that they can be visually recognized. In the invention according to claim 2, the predetermined distance is a predetermined distance of the main subject. The recommended shooting distance is determined so that the range of motion falls within the shooting range of the continuous shooting camera.

According to the third aspect of the invention, when the target mark is framed so that the predetermined movement range of the main subject including the person at the recommended shooting distance falls within the shooting range of the continuous shooting camera, The image of the target mark is positioned on the lens surface of the objective lens so that the size and position of the image of the target mark and the whole or part of the image of the person can be visually recognized in the viewfinder screen. .

Further, in the invention according to claim 4, the target mark has a ring shape, and the size of the image of the target mark and the image of the face of a person at a constant photographing distance is within the viewfinder screen. In the invention according to claim 5, the target mark is a doll shape of the whole body or half body of the person, and the target mark of the target mark observed in the viewfinder screen is formed. The size of the image and the size of the image of the person at a fixed shooting distance corresponding to this image are made substantially the same in the viewfinder screen so that they can be visually recognized.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 2 showing a continuous shooting type lens-fitted film unit embodying the present invention, a lens-fitted film unit 10 comprises an unexposed photographic film on a unit main body 11 having a simple photographing mechanism. Built-in.
On the front surface of the unit main body 11, eight photographing lenses 12a to 12h each having the same focal length are exposed by arranging four photographing lenses 12a to 12h in a two-tier structure.
The optical axes of 12h are parallel. A finder 13 is provided on the front surface of the unit main body 11, a release button 14 is provided on the upper surface, and a part of the winding knob 15 is exposed on the back surface.

With this lens-fitted film unit 10, when a continuous shooting is performed with a person making a golf swing and a golf club as the main subject, even the head of the golf club that has reached the top position of the backswing can be reliably shot. The optimum shooting distance (recommended shooting distance) that can be achieved is 6.
It is set to 5m. The recommended shooting distance is determined according to the range of movement of the main subject and the shooting range of the shooting lenses 12a to 12h.

As shown in FIG. 3, the unit body 11 is
It comprises a front cover 21, an exposure unit 22, a main body base 23, and a rear cover 24, and the main body base 23 is loaded with a 135 type photographic film cartridge 25 consisting of a photographic film 25a and a cartridge 25b.

The exposure unit 22 includes a light-tight box, a shutter mechanism, a shutter charge mechanism, a film winding mechanism,
And a film counter mechanism and the like are integrally incorporated, and on the front surface thereof, two lens plates 26 and 27 are formed, in which four photographing lenses 12a to 12h are integrally formed in four rows vertically and two rows horizontally. It is installed. An objective lens 40 and an eyepiece lens 41 of the finder 13 are held on the right side of the exposure unit 22. The shutter mechanism of the exposure unit 22, when the release operation is performed,
When the shutter operation start button 22a is pressed, the shutter operation start button 22a is operated to open and close the shutters provided behind the photographing lenses 12a to 12h one by one at predetermined intervals.

At the center of the main body base 23, the inside is vertically
A dark box 30 is formed which has eight exposure frames formed by dividing it into four columns of left and right columns, and the exposure unit 22 is attached to the front of the dark box 30. Each photographing lens 12a-12
Photographing light from h is regulated by a corresponding exposure frame, and the photo film 25a is set behind the dark box 30.
Is exposed. As a result, one release operation has an aspect ratio of 9:16 (length 20.8 mm × width 36).
(8 mm) high-definition-size single screen (shooting frame) is exposed with 8 consecutive frames in two rows vertically and four columns horizontally. The photographing ranges of the photographing lenses 12a to 12h are substantially the same.

A film roll chamber 31 and a cartridge storage chamber 32 are integrally formed on both sides of the dark box 30 of the main body base 23. The cartridge storage chamber 32 is loaded with a cartridge 25b, and the film roll chamber 31 is loaded with an unexposed photographic film 25a drawn from the cartridge 25a in a roll shape. A winding knob 15 is rotatably arranged above the cartridge storage chamber 32, and a winding shaft 15a integrally formed on the lower surface of the winding knob 15 engages with a spool of the cartridge 25b. When the winding knob 15 is rotated in the film winding direction, the spool is rotated so that the photographed photo film 25a is wound up in the cartridge 25b. During this winding, the sprocket of the exposure unit engaged with the perforations formed on the photo film 25a is rotated to perform shutter charging, and when the winding of one frame is completed, the rotation of the winding knob 15 is blocked. To be done.

A release button 14 is integrally provided on the front cover 21, and when the shutter button 14 is pressed after the completion of shutter charge, the shutter mechanism of the exposure unit 22 operates to perform continuous shooting. Further, the front cover 21 has openings 36a-3 for exposing the objective window 35 of the finder 13 and the photographing lenses 12a-12h.
6h is formed. The front cover 21 is attached to the front surface of the main body base 23 to which the exposure unit 22 is assembled.

The rear cover 24 has a film roll chamber 31.
And bottom covers 24a, 2 that cover the bottom of the cartridge storage chamber 32.
4b and the eyepiece window 37 of the finder 13 are integrally formed. The rear cover 23 light-tightly covers the back surface and the bottom surface of the main body base 23 in which the photographic film cartridge 24 is loaded. Bottom lid 24b that covers the bottom of the cartridge storage room 32
Is a photo film 24 that can be opened and closed.
It serves as a take-out lid for taking out the cartridge 24b accommodating a.

As shown in FIGS. 1 and 4, the finder 1
Reference numeral 3 is an inverse Galilean type composed of a negative power objective lens 40 and a positive power eyepiece lens 41. The objective lens 40 and the eyepiece lens 41 are each made of plastic. A ring-shaped target mark 40a centered on the optical axis 13a of the finder 13 is formed on the lens surface of the objective lens 40 on the eyepiece side. The target mark 40a is the objective lens 40
It is formed simultaneously with the molding of the objective lens 40 by roughening or engraving the corresponding portions of the molding die. The target mark 40a can be formed by various methods such as printing with black ink or color ink having transparency, vapor deposition of a thin film, roughening by sandblasting, etc. after the objective lens 40 is molded. If the objective lens 40 is formed at the same time as the molding, the manufacturing process can be simplified, which is advantageous in reducing the manufacturing cost.

A microlens 41a for observing the target mark 40a is formed on the lens surface on the eyepiece side of the eyepiece lens 41. Micro lens 41
The optical axis of a and the optical axis of the finder 13 coincide. Since the microlens 41a is integrally formed with the eyepiece lens 41 by providing a concave portion in the molding die of the eyepiece lens 41, the microlens 41a does not require post-molding processing and is suitable for mass production.

When looking through the finder 13, most of the light flux from the subject reaches the eyes through the non-formation area of the target mark 41a of the objective lens 40 and the non-formation area of the microlens 41a of the eyepiece lens 41, and this light flux. Thus, the subject image is observed as an upright virtual image at a position at a predetermined distance from the eyes. In general, the distance of the object image to be observed is determined to be a distance at which the photographer can observe with a diopter of 0 to −1 diopter, and the powers of the objective lens 40 and the eyepiece lens 41 are determined according to the distance. Further, in the field of view of the finder 13, that is, in the finder screen, a subject image in a range substantially the same as the shooting range of each of the taking lenses 12a to 12h is observed as a finder image.

Further, the target mark 40 is passed from the eyepoint EP on the optical axis 13a through the microlens 41a.
When a is observed, the image of the target mark 40a is observed in the viewfinder screen at substantially the same distance (virtual image position) as the subject image due to the refractive power (positive power) of the microlens 41a. In the image of the target mark 23, since the target mark 40a and the microlens 41a are arranged on the optical axis 13a of the finder 13, the optical axes of the photographing lenses 12a to 12h and the optical axis 1 of the finder 13 are the same.
When photographing a subject having a large recommended photographing distance compared to the interval of 3a, it is observed at a position substantially coincident with the center of the actual photographing range.

When the target mark 40a is observed through the microlens 41a, the target mark 40a is made to have almost the same size as the image of the face (head) observed in the viewfinder screen of the person at the recommended photographing distance. The size has been decided. That is, as shown in FIG. 5A, the face of the person observed in the finder screen is
Ring-shaped target mark 40a observed in 0
By deciding the photographing position so that the image 51 fits in the image 51, the photographing can be performed at the recommended photographing distance. After that, as shown in FIG. 5B, framing is performed so that the image 51 of the target mark 40a is located substantially at the chest position of the person in the subject in the finder screen 50, so that the entire image during the backswing is obtained. It is designed to be able to be shot within the shooting range.

Although the size of the person's face varies from person to person, the difference is small, so that the image 51 of the target mark 40a having a certain size is matched with the image of the face to photograph at the recommended photographing distance. be able to. Also,
Regarding the method of determining the shooting distance and the method of framing as described above, it is preferable to display a guide in a place where the lens-fitted photo film unit 10 is easy to see.

Next, the operation of the above configuration will be described. For example, when performing continuous shooting of golf swings, the photographer performs shooting from a position that is a recommended shooting distance away from the person who is the main subject and the golf club held by this person. When determining the photographing position, the photographer first looks at the viewfinder 13 straight from the eye point EP on the optical axis 13a by separating the main subject by an appropriate distance. When the finder 13 is directly viewed from the eye point EP, the main subject image is formed by the light flux from the main subject that passes through the non-formed area of the target mark 40a of the objective lens 40 and the non-formed area of the micro lens 41a of the eyepiece lens 41. The microlens 41 provided on the eyepiece lens 40 is observed as a finder image on the finder screen.
a shows the image 5 of the ring-shaped target mark 40a.
1 is observed near the subject image (virtual image). This allows
The photographer can clearly see the subject image and the image 51 of the target mark 40a at the same diopter.

Next, the photographer superimposes the image 51 of the target mark 40a and the face image of the main subject in the viewfinder screen, as shown in FIG. 5 (a). The size of the image 51 of the target mark 40a is set to be substantially the same as the size of the image of the face of the person at the recommended shooting distance.
If it is larger than 1, the shooting distance is too short, and the whole image of the swing cannot be included in the shooting range. Therefore, if the face image is smaller than the image 51 of the target mark 40a, the shooting distance is too far. Since the captured image of the main subject may be too small, in this case, the photographing position is adjusted so as to approach the main subject.

In this way, the photographer adjusts the photographing distance to obtain the image 51 of the ring-shaped target mark 40a.
The shooting distance is determined so that the image of the main subject's face fits almost completely. In this way, when the image 51 of the ring-shaped target mark 40a and the image of the face of the main subject are substantially in agreement, the position of the photographer (film unit with lens 10) is at the recommended photographing distance from the main subject. The shooting position is about 6.5 m away. Therefore, the shooting distance can be easily adjusted to the recommended shooting distance even if the user is unfamiliar with shooting.

After the photographing distance is determined, the photographer shakes the lens-fitted film unit downward to align the image 51 of the target mark 40a with the chest position of the main subject as shown in FIG. 5 (b). The framing is performed so that the head of the golf club held by the main subject and held downward is below the finder screen 50.

The main subject makes a backswing, and after the head of the golf club reaches the top (top), the golf club is swung down at a stretch. The photographer presses the release button 14 almost at the same time when the main subject reaches the top of the backswing. At this time, the head of the golf club reaching the top after being framed as described above does not protrude from the finder screen 50. Therefore, the photographer does not have to hurry and re-frame, and can concentrate his or her attention on the pressing operation of the release button 14. When the release button 14 is pressed, the shutter mechanism of the exposure unit 22 starts to operate, and the shutters behind the taking lenses 12a to 12h are opened and closed in order, and eight consecutive images are taken on one screen of the photographic film 25a. The frame is exposed.

When the photographed film 25a thus photographed is developed and printed in this manner, a printed photograph 55 as shown in FIG. 6 is obtained. In the print photo 55,
8 consecutive images with a time lag from the top of the backswing of the main subject to the follow through 55
a to 55h are printed. These images 55a
Since the shooting distances up to 55h are set so that the shooting distance becomes the recommended shooting distance, the head of the golf club during the swing does not stick out, not to mention the top of the backswing.

FIGS. 7 to 9 show an example in which after the shooting distance is adjusted to the recommended shooting distance by the target mark, shooting can be performed in the framing state as it is. The parts other than those described below are the same as those in the above-described embodiment, and the same parts are denoted by the same reference numerals and described.

As shown in FIGS. 7 and 8, the ring-shaped target mark 60a is formed at a position shifted upward from the optical axis 13a on the eyepiece side of the objective lens 60. In the eyepiece lens 41, a microlens 41a is formed on the optical axis 13a of the finder 13. Similar to the above-described embodiment, the size of the target mark 60a is made to be substantially the same as the size of the person's face when framing is performed at the recommended shooting distance, and is observed through the microlens 41a. . Further, as shown in FIG. 9, the target mark 60a is targeted at the face image of the main subject in the viewfinder screen 50 when the golf club head is framed so that the head of the golf club during the swing at the recommended shooting distance falls within the shooting range. Image 61 of mark 60a
Are positioned and formed on the lens surface of the objective lens 60 on the eyepiece side so that they overlap.

Since the range that can be observed by the microlens 41a is relatively wide, even if the positional relationship between the target mark 60a and the microlens 41a is as described above, the target can be satisfactorily passed through the microlens 41a. The mark 60a can be observed. Of course, the position of the microlens 41a may be shifted above the optical axis 13a as in the case of the target mark 60a.

According to the above arrangement, the image 6 of the ring-shaped target mark 60a observed in the viewfinder screen 50 is displayed.
If the shooting distance is determined and the framing is performed so that the size and position of 1 and the face image of the main subject substantially match, the shooting distance can be determined so as to be the recommended shooting distance, and at the same time, The head of the golf club during the swing is framed so as to fit within the shooting range. Therefore, it is not necessary to correct the framing after determining the shooting distance.

In each of the above embodiments, the target mark has a ring shape. However, as described above, for example, when shooting a golf swing from the front, a doll shape may be used as the target mark shape. Good. FIG. 10 shows that the center of the head of the target mark 65a is located on the optical axis 13a of the finder 13.
The doll-shaped target mark 65a is formed on the objective lens 65. In this case, as shown in FIG. 11, by determining the shooting position so that the upper half of the main subject fits inside the image 66 of the target mark 65a observed through the microlens 41a in the finder screen 50, The shooting distance is the recommended shooting distance. Then, after adjusting the shooting distances, the head of the image 66 of the target mark 65a is positioned at the chest position of the main subject so that the head of the golf club during the swing is within the shooting range and the framing is performed. It can be performed.

FIG. 12 shows an example in which, when the target mark is a doll type, it is possible to simultaneously determine the shooting distance and optimal framing. The doll-shaped target mark 67a is formed on the objective lens 67 so that its chest portion is located at the position of the optical axis 13a of the finder 13. Then, as shown in FIG. 13, the photographing position is determined so that the upper half of the body of the main subject fits inside the image 68 of the target mark 67a observed in the viewfinder screen 50 through the microlens 41a. At the same time that the distance becomes the recommended shooting distance, the head of the golf club during the swing is framed within the shooting range without correcting the framing after the shooting distance is determined.

When the doll-shaped target mark is used as described above, the target mark is larger than the ring-shaped target mark, but the size of the main subject is large at a distance as long as the recommended shooting distance. Since it is relatively small, the doll-shaped target mark can be placed within the observation range of the microlens of the eyepiece lens, and the target mark can be satisfactorily observed through the microlens.

In each of the above embodiments, the target mark is provided on the eyepiece side of the objective lens, and the microlens is provided on the eyepiece side of the eyepiece lens. However, the target mark may be provided on the objective side of the objective lens, and the microlens is the eyepiece side. It may be on the objective side of the lens. Furthermore, the target mark may be aligned not only with the face or upper body of the main subject but also with the whole body of the main subject, or with the legs or arms.

Further, although the golf swing form has been described as an example in the above-described embodiment, it is also suitable for shooting a small range of movement around the main subject, for example, shooting various sports such as tennis. You can shoot at a distance. Of course, in this case, the recommended shooting distance according to the range of movement and the angle of view of the shooting lens, and the size and position of the target mark according to the recommended shooting distance can be set appropriately. Further, the present invention can be applied to a compact camera or the like other than the lens-fitted film unit.

[0038]

As described above, according to the viewfinder for a continuous shooting camera of the present invention, at the time of observing a finder image, the positive power of the positive power provided on the lens surface of the eyepiece lens constituting the finder of the reverse Galileo type is observed. By observing a ring-shaped or doll-shaped target mark with a predetermined size on the lens surface of the objective lens through the microlens, a partial image of the whole body or face of a person at a fixed shooting distance can be obtained. Since the size of the image of the target mark and the size of the image of the target mark are almost the same in the viewfinder screen so that they can be viewed, it is possible to easily know a certain shooting distance.For example, the shooting position that is the recommended shooting distance can be easily determined. Therefore, the predetermined range of movement of the main subject can be kept within the shooting range of the continuous shooting camera.

Further, when the main subject including the person at the recommended shooting distance is framed so that the predetermined movement range is within the shooting range, the image of the target mark and the whole or part of the image of the person are displayed in the viewfinder screen. Since the target mark is positioned on the lens surface of the objective lens so that the size and position of and can be visually recognized almost the same, it is only necessary to match the image of the target mark with the whole or partial image of the person. Thus, the shooting position based on the recommended shooting distance can be determined and the framing can be performed at the same time.

[Brief description of drawings]

FIG. 1 is a perspective view showing an inverted Galilean finder embodying the present invention.

FIG. 2 is a perspective view showing a continuous shooting type lens-fitted film unit including the Galileo finder.

FIG. 3 is an exploded perspective view showing a configuration of a unit main body.

FIG. 4 is a sectional view showing a section of a finder.

FIG. 5 is an explanatory diagram showing a finder screen when a photographing distance is determined and when framing is determined.

FIG. 6 is an explanatory diagram showing a print photograph in which continuous shooting frames taken by one release operation are printed.

FIG. 7 is a perspective view showing a viewfinder of an example in which determination of a shooting distance and framing are simultaneously performed.

8 is a sectional view showing a section of the finder of FIG. 7. FIG.

9 is an explanatory view showing a finder screen by the finder of FIG. 7. FIG.

FIG. 10 is a perspective view showing a finder in which a target mark is a doll type.

11 is an explanatory view showing a finder screen by the finder of FIG. 10. FIG.

FIG. 12 is a perspective view showing a viewfinder of an example in which a target mark is a doll shape and a shooting distance is determined and framing is performed at the same time.

13 is an explanatory view showing a finder screen by the finder of FIG. 12. FIG.

[Explanation of symbols]

 10 Film Unit with Lens 12a to 12h Photographic Lens 13 Finder 40 Objective Lens 41 Eyepiece 40a, 60a, 65a, 67a Target Mark 41a Microlens 50 Finder Screen

Claims (5)

[Claims] 1. A reverse Galilean continuous shooting camera having a negative power objective lens and a positive power eyepiece lens provided for observing an object of a continuous shooting camera that performs a plurality of times of shooting by one release operation. In the finder for use, a target mark of a predetermined size is provided on the lens surface of the objective lens, and a positive power microlens for observing the target mark is provided on the lens surface of the eyepiece lens, so that a finder image can be observed. By observing the target mark through the microlens, the size of the whole or part of the image of the person at a fixed shooting distance and the image of the target mark can be made to be almost the same in the viewfinder screen for visual recognition. This is a viewfinder for continuous shooting cameras. 2. The fixed distance is a recommended shooting distance determined such that a predetermined range of movement of a main subject falls within a shooting range of the continuous shooting camera. Finder for continuous shooting camera. 3. The finder screen is displayed when the target mark is framed so that a predetermined range of motion of a main subject including the person at the recommended shooting distance falls within a shooting range of the continuous shooting camera. It is positioned on the lens surface of the objective lens such that the size and position of the image of the target mark and the image of the whole body or a part of the person are substantially coincident with each other. The viewfinder for a continuous shooting camera according to claim 2. 4. The target mark has a ring shape, and the size of the image of the target mark and the size of the image of the face of a person at the constant shooting distance are substantially the same in the viewfinder screen. The viewfinder for a continuous shooting camera according to any one of claims 1 to 3, wherein the viewfinder is visible. 5. The target mark is a doll shape of a person's whole body or half body shape, and an image of the target mark observed in a viewfinder screen and an image of the person at the fixed shooting distance corresponding to this image. The viewfinder for a continuous shooting camera according to any one of claims 1 to 3, wherein the sizes of and are substantially the same in the viewfinder screen so that they can be visually recognized.