JPH04152313A - Distance detector - Google Patents
Distance detectorInfo
- Publication number
- JPH04152313A JPH04152313A JP27650090A JP27650090A JPH04152313A JP H04152313 A JPH04152313 A JP H04152313A JP 27650090 A JP27650090 A JP 27650090A JP 27650090 A JP27650090 A JP 27650090A JP H04152313 A JPH04152313 A JP H04152313A
- Authority
- JP
- Japan
- Prior art keywords
- finding
- range
- photographing
- focal length
- precision
- 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
- 230000035945 sensitivity Effects 0.000 abstract 3
Abstract
PURPOSE: To guarantee range-finding precision and to shorten releasing time lag by operating necessary focusing precision from the focal length information of a photographing lens and diaphragm value information required from brightness and the sensitivity of a film, and determining the number of range-finding times.
CONSTITUTION: A photometric means 2 meters the brightness of an object, and a diaphragm value at the time of photographing is operated with the metered brightness and the film sensitivity detected by a film sensitivity detecting means 3, by a diaphragm value operating means 5. On the other hand, the focal length of the photographing lens is required by a focal length detecting means 1, and a means for operating the number of the range-finding times 5 operates the focusing precision required for the photographing by the required focal length and the output of the diaphragm value of the means 4, and determines the number of the range-finding times (n). A range-finding means 6 is operated according to the output of the means 5, and carries out the range- finding of n-number times, to obtain the average value of the measured value. Thus, the range-finding precision required for the photographing is guaranteed, and simultaneously, the releasing time lag can be shortened.
COPYRIGHT: (C)1992,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27650090A JPH04152313A (en) | 1990-10-17 | 1990-10-17 | Distance detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27650090A JPH04152313A (en) | 1990-10-17 | 1990-10-17 | Distance detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04152313A true JPH04152313A (en) | 1992-05-26 |
Family
ID=17570328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27650090A Pending JPH04152313A (en) | 1990-10-17 | 1990-10-17 | Distance detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04152313A (en) |
-
1990
- 1990-10-17 JP JP27650090A patent/JPH04152313A/en active Pending
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