JPH04308809A - Photographing device - Google Patents

Abstract

PURPOSE:To easily focus an object in a small specific close range in a photographing device which fixes a camera provided with an autofocusing mechanism of a non-TTL range-finding system to a specific distance from an object and carries out close-up photographing by the use of a correcting lens. CONSTITUTION:By concealing the front part of a light-receiving lens 5 for range-finding, with a concealing member 18 in order to impart constant distance information at the time of photographing, the distance information is regarded as an infinite-point. Photographing in constant focus can be carried out for a film F as for the object by always setting the photographic lens 2 of the camera main body 1 to the prescribed infinite-position as a focusing position by means of the autofocusing mechanism.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographing apparatus for photographing negative film or slide film using a camera having an autofocus mechanism.

0002

2. Description of the Related Art Conventionally, cameras having an autofocus mechanism have a close-up function for photographing small objects at close range.

0003

However, with conventional cameras having an autofocus mechanism, there are limits to the close-up function, and it is impossible to photograph small objects such as film. Furthermore, it does not have a structure to which a correction lens such as a close-up lens can be attached for magnified photography. Therefore, in order to photograph a small object such as a film, it is necessary to attach a camera to a photographing device having a correction lens. When photographing using a correction lens, due to the characteristics of the optical system, unless the photographing lens of the camera is moved to a predetermined position, the object will be out of focus.

[0004] In view of the problems of the prior art described above, the present invention
An object of the present invention is to provide a photographing device that can focus on a small object at a close distance by using a correction lens such as a close-up lens in a camera having an autofocus mechanism.

[0005]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a camera having a non-TTL distance measuring autofocus mechanism for measuring the distance to the subject, fixed at a specific distance from the subject, and close-up. A photographing device that uses a correction lens such as a lens for photographing is equipped with means for providing certain photographic information during photographing.

[0006]

[Operation] The photographing device configured as described above can bring the photographing lens of the camera body to a predetermined focusing position by providing distance measurement information during photographing, thereby photographing a small subject at a specific close distance. is possible with a certain focus. Further, if a uniform brightness light source for transmitting illumination of the film is arranged, slide film can be photographed, and if a camera capable of negative/positive reversal recording is used, negative film can be photographed with a constant focus.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 5 show a first embodiment of the present invention. 1 and 2 are a front view and a side view of a still video camera (hereinafter referred to as SV camera) used in the present invention, FIG. 3 is a relationship diagram of the entire device, and FIG. 4 is a cross-sectional view of the main parts of the photographing device. , FIG. 5 is a sectional view of the main part taken along the line A-A in FIG. 4. In the figure, 1 is an SV camera with an autofocus mechanism, which is capable of reversing negative and positive during recording, and has a positioning hole 1a and a mounting screw part 1b on its side surface. 2 is a photographing lens, 3 is an imaging device (CCD)
, 4 is a projecting lens for distance measurement, 5 is a light receiving lens for distance measurement, 6 is a finder lens, 7 is an electronic flash, 8 is a release button, and 9 is a macro switching knob. Reference numeral 10 denotes a distance-measuring light emitting LED disposed behind the distance-measuring light projecting lens 4, and 11 denotes a distance-measuring light-receiving element disposed behind the distance-measuring light-receiving lens 5. Based on the information, the photographing lens 2 is set to a focus position by an autofocus mechanism (not shown).

Reference numeral 12 designates a film photographing device, and reference numeral 13 designates an exterior portion which also serves as a camera mounting portion, and has a positioning hole 13a formed in its side surface and a camera fixing screw 14. A support member 15 supports the optical system, and is fixed to the film photographing device 12. 16 is a close-up lens as a correction lens, which is fixed to the lens barrel 17. Further, the lens barrel 17 is engaged with a threaded portion provided on the support member 15. Reference numeral 18 denotes a distance-measuring light-receiving lens concealing member, which is used to set the distance-measuring information of the camera 1 to infinity and to set the photographing lens 2 at a predetermined infinity position as the focusing position. Reference numeral 19 represents a placing portion, and reference numeral 20 represents a holding member. 21 is a film confirmation window, and 22 is a film holding member for the film F. 30 is a light source section, 31 is a fluorescent lamp serving as a light source, 32 is a reflection box for reflecting the light from the fluorescent lamp 31 and concentrating it toward the film F, 33 is a correction sheet for making the brightness distribution of the light source uniform, 34 is a diffusion plate, 35 is a circuit board, 3
6 is a light source switch, and 37 is an inverter circuit for lighting the fluorescent lamp 31. 38 is a release switch button provided on the film photographing device 12, 39 is a negative/positive inversion switch knob, and 40 is an erase switch button. 41 is a connection cable, and a connector 42 is provided at one end.

A coupler 50 is connected to the camera 1 and the film photographing device 12. A power connector 51 is connected to a connector 61 of an AC adapter 60. 52
53, 54, 55 are video output terminals compatible with various TV monitors, 56 is a connector for connecting to the connector 42 of the film photographing device 12, and 57 is a camera. Connection part 5
8 and the coupler 50, and 59 is a connector provided at the camera connection portion 58. The AC adapter 60 converts alternating current power into direct current, and one end of its cable 62 is provided with a plug (not shown) for connection to an alternating current outlet. 70 is a TV monitor, which is connected to the video output terminal 53 of the coupler 50 via a cable 71.

Next, the operation of this embodiment having the above configuration will be explained. First, coupler 50 is connected to AC adapter 60, and a plug (not shown) is inserted into a power outlet. Next, the camera connecting part 58 of the coupler 50 is inserted into the camera 1 and connected, and then the camera fixing screw 14 attached to the camera mounting part 13 of the film photographing device 12 is screwed into the threaded part 1b of the camera 1 to fix the camera 1. . At this time,
The positioning pin 13a of the camera mounting portion 13 fits into the positioning hole 1a of the camera 1, and the distance from the mounting portion 19 of the film photographing device 12 is maintained constant. Then, the connector 42 of the film photographing device 12 is connected to the connector 5 of the coupler 50.
6, and a TV monitor 70 is also connected to the video output terminal of the coupler 50 using a cable 71. When connected in this way, the AC adapter 60 converts AC power from the power outlet into DC power and supplies it to the camera 1 and film photographing device 12 via the coupler 50. Further, the states of various switches 36, 38, 39, and 40 of the film photographing device 12 are transmitted to the camera 1 via the coupler 50.

Therefore, when the light source switch 36 is turned on and the fluorescent lamp 31 is turned on, the light from the fluorescent lamp 31 is reflected by the reflection box 32 and the direct light passes through the correction sheet 33 and the diffuser plate 34 to achieve uniform brightness. becomes. When the film holding member 22 with the film F mounted thereon is set on the mounting portion 19 of the film photographing device 12, an image to be photographed is selected through the film confirmation window 21, and a release switch button 38 is pressed, photographing can be performed. At this time, since the distance measurement information is set to infinity by hiding the distance measurement light receiving lens 5 with the member 18 as described above, the photographing lens 2 is always set at a predetermined infinity position as the focusing position by the autofocus mechanism. , shooting is performed with a constant focus. Further, the signals of the switches 36, 38, 39, and 40 of the film photographing device 12 are transmitted to the camera 1 via the coupler 50, so when the release switch button 38 is pressed, the changeover switch knob 39 is
In the case of ITIVE, the image is left as is, and in the case of NEGATIVE, the negative and positive are inverted and recorded on a video floppy (not shown). If you do not like the recorded image, press the erase switch button 40 to save the image on the video floppy. It can be deleted from

FIG. 6 shows a second embodiment of the invention. In order to simplify the explanation, the same parts as in the first embodiment will be described with the same reference numerals. In the first embodiment described above, a member that hides the distance-measuring light-receiving lens of the camera is used as a means to set the camera's photographing lens at a predetermined focusing position by giving constant distance information when photographing with the camera, so as to set the distance to infinity. On the other hand, in this embodiment, a second distance measuring light receiving element 80 is separately provided on the side of the distance measuring light receiving element 11, and a distance measuring light emitting LED is provided.
10 of the light is received by a second distance measuring light receiving element 80 by a reflecting member 81 provided on a supporting member of the film photographing device. The other configurations are the same as those of the first embodiment described above. This embodiment with the above configuration is a distance measuring light emitting LED.
When the second distance measuring light receiving element 80 receives the light of 10,
The photographic lens can be set to a predetermined focus position using the predetermined distance measurement information.

FIG. 7 shows a third embodiment of the present invention. In this embodiment, in the area 11a of the distance measurement light receiving element 11 that is not used for general photography, the distance measurement light emitting LED is
10 is received by a reflecting member 81 provided on a support member of a film photographing device, the photographing lens is set at a predetermined focusing position. The other configurations are the same as those of the first embodiment described above.

[0014] In each of the above embodiments, an SV camera having a negative/positive inversion function was used, but if slide film is to be photographed, the negative/positive inversion function is not necessary, and a silver halide camera may also be used. Needless to say.

[0015]

Effects of the Invention As explained above, the present invention is applicable to photography in which a camera having a non-TTL distance measuring autofocus mechanism that measures the distance to a subject is fixed at a specific distance from the subject and a correction lens is used to take the picture. By equipping the device with a means to provide fixed distance information when shooting, the photographing lens of the camera body can be set to a predetermined focus position, making it possible to securely shoot small objects at a specific close distance with a fixed focus. can do.

[Brief explanation of the drawing]

FIG. 1 is a front view of a still video camera used in a photographing device according to a first embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a diagram showing the overall relationship between a photographing device and a camera.

FIG. 4 is a cross-sectional view of a main part of a state in which a camera is attached to a photographing device.

FIG. 5 is a sectional view of a main part taken along line AA in FIG. 4;

FIG. 6 is a configuration diagram of a distance measuring section on the camera side in a second embodiment of the present invention.

FIG. 7 is a configuration diagram of a distance measuring section on the camera side in a third embodiment of the present invention.

[Explanation of symbols]

1 Still video camera (SV camera) 2
Photographing lens 3 Image sensor (CCD) 4 Light emitting lens for distance measurement 5 Light receiving lens for distance measurement 10 Light emitting LED for distance measurement 11 Light receiving element for distance measurement 12 Film photographing device 13 Camera mounting part (exterior part) 16 Close-up lens (Correction lens) 18 Range-finding light receiving lens concealing member 22 Film holding member 30 Light source section 31 Fluorescent lamp 36 Light source switch 38 Release switch button 39 Negative/positive changeover switch button 40
Erase switch button 50 Coupler 58 Camera connection part 60 AC adapter 70 TV monitor 80 Second distance measuring light receiving element 81 Distance measuring LED light reflecting member F
film

Claims (1)

[Claims] Claim 1: In a photographing device in which a camera having a non-TTL distance measuring autofocus mechanism that measures the distance to a subject is fixed at a specific distance from the subject and the photograph is taken using a correction lens, the camera is fixed at a certain distance from the subject and the photograph is taken using a correction lens. A photographing device characterized by comprising means for providing information.