JPH04152313A - Distance detector - Google Patents

Distance detector

Info

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
Application number
JP27650090A
Other languages
Japanese (ja)
Inventor
Azuma Miyazawa
Original Assignee
Olympus Optical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP27650090A priority Critical patent/JPH04152313A/en
Publication of JPH04152313A publication Critical patent/JPH04152313A/en
Pending legal-status Critical Current

Links

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
JP27650090A 1990-10-17 1990-10-17 Distance detector Pending JPH04152313A (en)

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)

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