JPS5724924A - Preparing device for flashlight photographying in flashing apparatus self-containing camera - Google Patents
Preparing device for flashlight photographying in flashing apparatus self-containing cameraInfo
- Publication number
- JPS5724924A JPS5724924A JP9959080A JP9959080A JPS5724924A JP S5724924 A JPS5724924 A JP S5724924A JP 9959080 A JP9959080 A JP 9959080A JP 9959080 A JP9959080 A JP 9959080A JP S5724924 A JPS5724924 A JP S5724924A
- Authority
- JP
- Japan
- Prior art keywords
- flashing apparatus
- switch
- low
- photographying
- flashlight
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/16—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with both the intensity of the flash source and the distance of the flash source from the object, e.g. in accordance with the "guide number" of the flash bulb and the focusing of the camera
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Control For Cameras (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
PURPOSE:To prohibit simultaneous use of a common power source and to prevent bad influence on exposure control by preventing automatic switching when low brightness to a flash photographing preparing state after exposure control or focusing detection start. CONSTITUTION:When brightness of a subject is low and divided voltage due to an optical detecting element 3 and a resistance 4 is lowered than reference voltage due to resistances 5, 6, an output of a comparator 7 becomes low and a transistor(TR) 10 turns on. Since a switch 12 is on before start of a shutter action, an electromagnet 13 is conducted, a flashing apparatus is subjected to popup with a switch on, thus supply to the flashing apparatus starts. After start of a shutter action the switch is off, even if the comparator 7 outputs a low brightness signal, the electromagnet 13 is not conducted, thus the flashing apparatus is not actuated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9959080A JPS5724924A (en) | 1980-07-21 | 1980-07-21 | Preparing device for flashlight photographying in flashing apparatus self-containing camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9959080A JPS5724924A (en) | 1980-07-21 | 1980-07-21 | Preparing device for flashlight photographying in flashing apparatus self-containing camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5724924A true JPS5724924A (en) | 1982-02-09 |
Family
ID=14251302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9959080A Pending JPS5724924A (en) | 1980-07-21 | 1980-07-21 | Preparing device for flashlight photographying in flashing apparatus self-containing camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5724924A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4475801A (en) * | 1982-07-29 | 1984-10-09 | Nippon Kogaku K.K. | Flashlight photography preparing device of a camera |
JPS60140327A (en) * | 1983-12-28 | 1985-07-25 | Canon Inc | Restarting device of stroboscope for camera |
KR100450085B1 (en) * | 2002-08-16 | 2004-09-30 | 삼성테크윈 주식회사 | Flash control apparatus utilizing characteristic of logarithmic function |
WO2021117254A1 (en) * | 2019-12-09 | 2021-06-17 | 株式会社E・T・L | Spot cooler device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53123A (en) * | 1976-06-23 | 1978-01-05 | Canon Inc | Automatic exposure control device for camera which can flash-photograph |
JPS5382410A (en) * | 1976-12-28 | 1978-07-20 | Canon Inc | Automatic exposure control device for camera capable of flash photography |
-
1980
- 1980-07-21 JP JP9959080A patent/JPS5724924A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53123A (en) * | 1976-06-23 | 1978-01-05 | Canon Inc | Automatic exposure control device for camera which can flash-photograph |
JPS5382410A (en) * | 1976-12-28 | 1978-07-20 | Canon Inc | Automatic exposure control device for camera capable of flash photography |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4475801A (en) * | 1982-07-29 | 1984-10-09 | Nippon Kogaku K.K. | Flashlight photography preparing device of a camera |
JPS60140327A (en) * | 1983-12-28 | 1985-07-25 | Canon Inc | Restarting device of stroboscope for camera |
JPH0455288B2 (en) * | 1983-12-28 | 1992-09-02 | Canon Kk | |
KR100450085B1 (en) * | 2002-08-16 | 2004-09-30 | 삼성테크윈 주식회사 | Flash control apparatus utilizing characteristic of logarithmic function |
WO2021117254A1 (en) * | 2019-12-09 | 2021-06-17 | 株式会社E・T・L | Spot cooler device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5445128A (en) | Exposure control system for camera | |
US4540265A (en) | Energy-saving electronic flash apparatus | |
GB1559169A (en) | Camera with flash device | |
JPS5220021A (en) | Exposure control device for the camera | |
US4302084A (en) | Automatic rangefinding device for use in a camera | |
JPS5724924A (en) | Preparing device for flashlight photographying in flashing apparatus self-containing camera | |
JPS54153038A (en) | Automatic exposure control device of electrophoto graphic copier | |
JPS5749937A (en) | Photographic mode switching device for flash photographing of camera | |
JPS5270830A (en) | Lens interchangeable camera | |
JPS55140825A (en) | Exposure control unit for single-lens reflex camera having strobe control function | |
JPS5370819A (en) | System for determining exposure requirements of camera | |
US4190335A (en) | Shutter controlling aid means for use with camera | |
US4091398A (en) | Electronic photoflash unit having remote control device transmitter function | |
US4429971A (en) | Apparatus for testing automatic electronic flash | |
US3690229A (en) | Exposure control apparatus for photographic cameras | |
JPS54121116A (en) | Auto focus camera | |
GB1316633A (en) | Exposure control arrangement | |
JPS5730820A (en) | Strobe tuning device | |
JPS5784442A (en) | Flash photographing device of ttl metering system | |
JPS5788416A (en) | Automatic focusing camera | |
JPS57204068A (en) | Exposure controller | |
JPS5474424A (en) | Camera with automatic focusing device | |
US3976913A (en) | Automatic flash device | |
JPS54141629A (en) | Program control system of aperture and shutter priority camera | |
JPS5515189A (en) | Camera provided with automatic focus controller |