JPS54139732A - Exposure control value converting circuit of cameras - Google Patents
Exposure control value converting circuit of camerasInfo
- Publication number
- JPS54139732A JPS54139732A JP4815078A JP4815078A JPS54139732A JP S54139732 A JPS54139732 A JP S54139732A JP 4815078 A JP4815078 A JP 4815078A JP 4815078 A JP4815078 A JP 4815078A JP S54139732 A JPS54139732 A JP S54139732A
- Authority
- JP
- Japan
- Prior art keywords
- exposure
- circuit
- setting
- photographing
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Exposure Control For Cameras (AREA)
- Details Of Cameras Including Film Mechanisms (AREA)
Abstract
PURPOSE: To change aperture opening value or exposure time or selectively change the combinations of aperture opening value and exposure time while at standard exposure by providing a mode setting part, exposure value converting and setting part, arithmetic circuit and control part.
CONSTITUTION: An exposure control value is outputted in the photometric circuit 40 in the camera and is sent to an arithmetic circuit 42, where it undergoes the specified operations according to the photographic mode having been selected at the photographing. The output being the results of the operation is sent to an exposure control circuit 44. The information of the photographing mode necessary for the arithmetic operation has beforehand been stored in a memory circuit 41 and a control circuit 45 drives the arithmetic circuit 42 according to the control program. Setting of the photographing modes is accomplished in a setting circuit which permits selection of 7 modes of single shot, 2 or 5 shots under the same exposure setting, continuous frame shot and exposure control value conversion mode, thus photographing may be smoothly performed at a desired exposure control value.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4815078A JPS54139732A (en) | 1978-04-21 | 1978-04-21 | Exposure control value converting circuit of cameras |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4815078A JPS54139732A (en) | 1978-04-21 | 1978-04-21 | Exposure control value converting circuit of cameras |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8674585A Division JPS60258523A (en) | 1985-04-22 | 1985-04-22 | Exposure controller of camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54139732A true JPS54139732A (en) | 1979-10-30 |
Family
ID=12795324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4815078A Pending JPS54139732A (en) | 1978-04-21 | 1978-04-21 | Exposure control value converting circuit of cameras |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54139732A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59195630A (en) * | 1983-04-21 | 1984-11-06 | Asahi Optical Co Ltd | Automatic exposure control device of camera |
| JPS59214827A (en) * | 1983-05-20 | 1984-12-04 | Marumatsu Sangyo Kk | Automatic slight changing device for exposure condition of automatic exposure camera in continuous photographing |
| US4589757A (en) * | 1982-04-21 | 1986-05-20 | Olympus Optical Co., Ltd. | Camera |
| JPS6199130U (en) * | 1984-11-30 | 1986-06-25 | ||
| JPS61148437A (en) * | 1984-12-21 | 1986-07-07 | Nippon Kogaku Kk <Nikon> | Exposure controller of camera |
| JPS6271938A (en) * | 1985-09-25 | 1987-04-02 | Casio Comput Co Ltd | Photographing device |
| JPS6337323A (en) * | 1986-08-01 | 1988-02-18 | Canon Inc | Exposure control device for camera |
| US4816853A (en) * | 1985-01-21 | 1989-03-28 | Minolta Camera Kabushiki Kaisha | Camera system with plural interchangeable accessories sharing a common serial data bus |
| US4878751A (en) * | 1985-01-21 | 1989-11-07 | Minolta Camera Kabushiki Kaisha | Camera system |
| JPH0220837A (en) * | 1989-04-19 | 1990-01-24 | Olympus Optical Co Ltd | Camera |
| US4992820A (en) * | 1985-01-21 | 1991-02-12 | Minolta Camera Kabushiki Kaisha | Camera system |
| US5249014A (en) * | 1985-01-21 | 1993-09-28 | Minolta Camera Kabushiki Kaisha | Camera system having an accessory and being operable to prohibit a photographic operator when the set number of frames have been photographed during bracket photography |
| US5333030A (en) * | 1985-01-21 | 1994-07-26 | Minolta Camera Kabushiki Kaisha | Camera system |
-
1978
- 1978-04-21 JP JP4815078A patent/JPS54139732A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4589757A (en) * | 1982-04-21 | 1986-05-20 | Olympus Optical Co., Ltd. | Camera |
| JPS59195630A (en) * | 1983-04-21 | 1984-11-06 | Asahi Optical Co Ltd | Automatic exposure control device of camera |
| JPS59214827A (en) * | 1983-05-20 | 1984-12-04 | Marumatsu Sangyo Kk | Automatic slight changing device for exposure condition of automatic exposure camera in continuous photographing |
| JPS6199130U (en) * | 1984-11-30 | 1986-06-25 | ||
| US4734727A (en) * | 1984-12-21 | 1988-03-29 | Nippon Kogaku K. K. | Bracketing exposure control camera |
| JPS61148437A (en) * | 1984-12-21 | 1986-07-07 | Nippon Kogaku Kk <Nikon> | Exposure controller of camera |
| US4878751A (en) * | 1985-01-21 | 1989-11-07 | Minolta Camera Kabushiki Kaisha | Camera system |
| US4816853A (en) * | 1985-01-21 | 1989-03-28 | Minolta Camera Kabushiki Kaisha | Camera system with plural interchangeable accessories sharing a common serial data bus |
| US4935766A (en) * | 1985-01-21 | 1990-06-19 | Minolta Camera Kabushiki Kaisha | Camera system including exposure mode data back and flash accessories |
| US4992820A (en) * | 1985-01-21 | 1991-02-12 | Minolta Camera Kabushiki Kaisha | Camera system |
| US5249014A (en) * | 1985-01-21 | 1993-09-28 | Minolta Camera Kabushiki Kaisha | Camera system having an accessory and being operable to prohibit a photographic operator when the set number of frames have been photographed during bracket photography |
| US5333030A (en) * | 1985-01-21 | 1994-07-26 | Minolta Camera Kabushiki Kaisha | Camera system |
| JPS6271938A (en) * | 1985-09-25 | 1987-04-02 | Casio Comput Co Ltd | Photographing device |
| JPS6337323A (en) * | 1986-08-01 | 1988-02-18 | Canon Inc | Exposure control device for camera |
| JPH0220837A (en) * | 1989-04-19 | 1990-01-24 | Olympus Optical Co Ltd | Camera |
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