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JPS5742026A - Multiphotometric device - Google Patents

Multiphotometric device

Info

Publication number
JPS5742026A
JPS5742026A JP55118920A JP11892080A JPS5742026A JP S5742026 A JPS5742026 A JP S5742026A JP 55118920 A JP55118920 A JP 55118920A JP 11892080 A JP11892080 A JP 11892080A JP S5742026 A JPS5742026 A JP S5742026A
Authority
JP
Japan
Prior art keywords
circuit
photometric
output
correct
maximum
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
Application number
JP55118920A
Other languages
Japanese (ja)
Other versions
JPH0428087B2 (en
Inventor
Takashi Saegusa
Toru Fukuhara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikon Corp
Nippon Chemical Industrial Co Ltd
Original Assignee
Nippon Chemical Industrial Co Ltd
Nippon Kogaku KK
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 Nippon Chemical Industrial Co Ltd, Nippon Kogaku KK filed Critical Nippon Chemical Industrial Co Ltd
Priority to JP55118920A priority Critical patent/JPS5742026A/en
Priority to US06/295,003 priority patent/US4412730A/en
Priority to DE19813134098 priority patent/DE3134098A1/en
Publication of JPS5742026A publication Critical patent/JPS5742026A/en
Publication of JPH0428087B2 publication Critical patent/JPH0428087B2/ja
Granted legal-status Critical Current

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
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/099—Arrangement of photoelectric elements in or on the camera
    • G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera
    • G03B7/0997—Through the lens [TTL] measuring
    • G03B7/09979—Multi-zone light measuring

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Exposure Control For Cameras (AREA)

Abstract

PURPOSE:To make the outputting of the correct photometric output which gives correct exposure possible by selectively outputting the correct output out of the plural photometric outputs according to the maximum luminance by multiphotometry. CONSTITUTION:The photometric outputs of each of plural areas of an object from a photometric circuit 10 are processed in a luminance operating circuit 11, and maximum, average and minimum luminances are outputted from maximum value, average value and minimum value circuits 12-14. The maximum luminance output from this circuit 12 is appllied to comparators 51-53 of which the respective set reference values are successively smaller and which generate high level outputs when applied with the inputs above these set reference values. Gates 54-56 are controlled by the circuits 51-53 and the output of the circuit 14 is selected when the maximum luminance is large owing to the sun or the like, that of the circuit 13 for general outdoor ascenes in the daytime and that of the circuit 12 in a night scene. As a result, the correct photometric output giving correct exposure is outputted selectively each time.
JP55118920A 1980-08-28 1980-08-28 Multiphotometric device Granted JPS5742026A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP55118920A JPS5742026A (en) 1980-08-28 1980-08-28 Multiphotometric device
US06/295,003 US4412730A (en) 1980-08-28 1981-08-21 Metering device
DE19813134098 DE3134098A1 (en) 1980-08-28 1981-08-28 MEASURING DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55118920A JPS5742026A (en) 1980-08-28 1980-08-28 Multiphotometric device

Publications (2)

Publication Number Publication Date
JPS5742026A true JPS5742026A (en) 1982-03-09
JPH0428087B2 JPH0428087B2 (en) 1992-05-13

Family

ID=14748448

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55118920A Granted JPS5742026A (en) 1980-08-28 1980-08-28 Multiphotometric device

Country Status (1)

Country Link
JP (1) JPS5742026A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60102614A (en) * 1983-11-09 1985-06-06 Kubota Ltd Automatic exposing device
US4748468A (en) * 1986-02-17 1988-05-31 Minolta Camera Kabushiki Kaisha Exposure display device
US5223892A (en) * 1991-04-19 1993-06-29 Fuji Photo Film Co., Ltd. Photographic printing method
US5227830A (en) * 1989-11-27 1993-07-13 Olympus Optical Co., Ltd. Automatic camera

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4953425A (en) * 1972-09-22 1974-05-24
JPS5192622A (en) * 1975-02-12 1976-08-13
JPS5212828A (en) * 1975-07-21 1977-01-31 Konishiroku Photo Ind Co Ltd Exposure control process for the object of a non-uniform distribution of brightness
JPS5317725A (en) * 1976-08-03 1978-02-18 Minolta Camera Co Ltd Exposure meter
JPS5319025A (en) * 1976-08-04 1978-02-21 Minolta Camera Co Ltd Electromagnetic release mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4953425A (en) * 1972-09-22 1974-05-24
JPS5192622A (en) * 1975-02-12 1976-08-13
JPS5212828A (en) * 1975-07-21 1977-01-31 Konishiroku Photo Ind Co Ltd Exposure control process for the object of a non-uniform distribution of brightness
JPS5317725A (en) * 1976-08-03 1978-02-18 Minolta Camera Co Ltd Exposure meter
JPS5319025A (en) * 1976-08-04 1978-02-21 Minolta Camera Co Ltd Electromagnetic release mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60102614A (en) * 1983-11-09 1985-06-06 Kubota Ltd Automatic exposing device
US4748468A (en) * 1986-02-17 1988-05-31 Minolta Camera Kabushiki Kaisha Exposure display device
US5227830A (en) * 1989-11-27 1993-07-13 Olympus Optical Co., Ltd. Automatic camera
US5223892A (en) * 1991-04-19 1993-06-29 Fuji Photo Film Co., Ltd. Photographic printing method

Also Published As

Publication number Publication date
JPH0428087B2 (en) 1992-05-13

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