JPS569730A - Method and device for photometry for flash photography - Google Patents
Method and device for photometry for flash photographyInfo
- Publication number
- JPS569730A JPS569730A JP8562579A JP8562579A JPS569730A JP S569730 A JPS569730 A JP S569730A JP 8562579 A JP8562579 A JP 8562579A JP 8562579 A JP8562579 A JP 8562579A JP S569730 A JPS569730 A JP S569730A
- Authority
- JP
- Japan
- Prior art keywords
- signal corresponding
- flash
- obtaining
- aperture value
- stationary light
- 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.)
- Granted
Links
Landscapes
- Exposure Control For Cameras (AREA)
- Stroboscope Apparatuses (AREA)
Abstract
PURPOSE: To make it possible to accurately obtain a correct aperture value without remeasuring even if the brightness of a stationary light changes by enabling the correct aperture value accounting for the stationary light at the flash photographing to be obtained without continuing the measuring during the preset exposure time.
CONSTITUTION: This consists of the lst process of obtaining the signal corresponding to the quantity of emitted light of the flash Ps having beforehand been emitted based on the signal from a photometric circuit 20, the 2nd process of obtaining the signal corresponding to the intensity of stationary light Pa based on the signal from the photometric circuit 20, and the 3rd process of obtaining the correct aperture value at the flash photographing based on the signal corresponding to the quantity of emitted light of the flash Ps, the signal corresponding to the intensity of the stationary light Pa, the signal corresponding to the preset exposure time and the signal corresponding to the preset film sensitivity.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8562579A JPS569730A (en) | 1979-07-05 | 1979-07-05 | Method and device for photometry for flash photography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8562579A JPS569730A (en) | 1979-07-05 | 1979-07-05 | Method and device for photometry for flash photography |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS569730A true JPS569730A (en) | 1981-01-31 |
JPS642927B2 JPS642927B2 (en) | 1989-01-19 |
Family
ID=13864012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8562579A Granted JPS569730A (en) | 1979-07-05 | 1979-07-05 | Method and device for photometry for flash photography |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS569730A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5666834A (en) * | 1979-11-02 | 1981-06-05 | Minolta Camera Co Ltd | Flashlight photographing photometric device |
JPS59105621A (en) * | 1982-12-09 | 1984-06-19 | Olympus Optical Co Ltd | Device for controlling light emission of electronic flash |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5383739A (en) * | 1976-12-29 | 1978-07-24 | Olympus Optical Co Ltd | Strobo flash control system for focal plane shutter camera of electric type |
-
1979
- 1979-07-05 JP JP8562579A patent/JPS569730A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5383739A (en) * | 1976-12-29 | 1978-07-24 | Olympus Optical Co Ltd | Strobo flash control system for focal plane shutter camera of electric type |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5666834A (en) * | 1979-11-02 | 1981-06-05 | Minolta Camera Co Ltd | Flashlight photographing photometric device |
JPS59105621A (en) * | 1982-12-09 | 1984-06-19 | Olympus Optical Co Ltd | Device for controlling light emission of electronic flash |
Also Published As
Publication number | Publication date |
---|---|
JPS642927B2 (en) | 1989-01-19 |
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