CA2066064A1 - Exposure control apparatus of camera - Google Patents

Exposure control apparatus of camera

Info

Publication number
CA2066064A1
CA2066064A1 CA002066064A CA2066064A CA2066064A1 CA 2066064 A1 CA2066064 A1 CA 2066064A1 CA 002066064 A CA002066064 A CA 002066064A CA 2066064 A CA2066064 A CA 2066064A CA 2066064 A1 CA2066064 A1 CA 2066064A1
Authority
CA
Canada
Prior art keywords
exposure
control apparatus
camera
exposure control
factors
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
CA002066064A
Other languages
French (fr)
Other versions
CA2066064C (en
Inventor
Osamu Sato
Satoshi Nakano
Isamu Hirai
Toshiyuki Kitazawa
Takayuki Sensui
Masato Yamamoto
Toshimasa Yamanaka
Takenao Shishikura
Akio Takahashi
Nobuhiko Matsudo
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.)
Pentax Corp
Original Assignee
Individual
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
Priority claimed from JP3214834A external-priority patent/JP2997343B2/en
Priority claimed from JP03361198A external-priority patent/JP3100724B2/en
Application filed by Individual filed Critical Individual
Publication of CA2066064A1 publication Critical patent/CA2066064A1/en
Application granted granted Critical
Publication of CA2066064C publication Critical patent/CA2066064C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G03B7/091—Digital circuits
    • G03B7/097—Digital circuits for control of both exposure time and aperture
    • 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/18—Signals indicating condition of a camera member or suitability of light
    • G03B17/20—Signals indicating condition of a camera member or suitability of light visible in viewfinder

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)

Abstract

An exposure control apparatus of a camera wherein a pair of exposure factors, including a shutter speed and a diaphragm value, can be manually and independently set.
Furthermore, in the exposure control apparatus, an exposure value determined in accordance with the exposure factors can be locked, and one of the exposure factors can be varied, based on the locked exposure value, when the other exposure factor is varied by the associated manual setting means.
CA 2066064 1991-04-15 1992-04-14 Exposure control apparatus of camera Expired - Fee Related CA2066064C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP17349591 1991-04-15
JP3-173495 1991-04-15
JP3214834A JP2997343B2 (en) 1991-05-21 1991-05-21 Camera exposure control device
JP3-214834 1991-05-21
JP03361198A JP3100724B2 (en) 1991-04-15 1991-11-28 Camera exposure control device
JP3-361198 1991-11-28

Publications (2)

Publication Number Publication Date
CA2066064A1 true CA2066064A1 (en) 1992-10-16
CA2066064C CA2066064C (en) 2001-07-31

Family

ID=27323788

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2066064 Expired - Fee Related CA2066064C (en) 1991-04-15 1992-04-14 Exposure control apparatus of camera

Country Status (7)

Country Link
AU (1) AU649804B2 (en)
CA (1) CA2066064C (en)
DE (1) DE4212660C2 (en)
FR (1) FR2675277B1 (en)
GB (1) GB2256060B (en)
HK (1) HK36495A (en)
MY (1) MY110099A (en)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1185055B (en) * 1958-08-26 1965-01-07 Agfa Ag Photographic camera with a device for controlling the aperture and exposure time setting according to a predetermined program
US4103307A (en) * 1973-07-16 1978-07-25 Canon Kabushiki Kaisha Exposure control device
GB1552597A (en) * 1975-10-09 1979-09-19 Haskell R Camera controller
JPS5478124A (en) * 1977-12-03 1979-06-22 Nippon Chemical Ind Automatic exposure control camera display unit
JPS54151445A (en) * 1978-05-19 1979-11-28 Canon Inc Camera
JPS5624326A (en) * 1979-08-07 1981-03-07 Canon Inc Camera of program system
JPS60173526A (en) * 1984-02-20 1985-09-06 Asahi Optical Co Ltd Automatic exposure camera
US4653893A (en) * 1984-09-03 1987-03-31 Minolta Camera Co., Ltd. Camera exposure calculating device
US4792823A (en) * 1985-06-27 1988-12-20 Minolta Camera Kabushiki Kaisha Camera and camera system
JPH0785154B2 (en) * 1986-03-14 1995-09-13 オリンパス光学工業株式会社 Camera program exposure characteristic setting method and setting apparatus

Also Published As

Publication number Publication date
AU649804B2 (en) 1994-06-02
FR2675277B1 (en) 1995-01-20
HK36495A (en) 1995-03-24
GB2256060A (en) 1992-11-25
GB2256060B (en) 1994-07-13
FR2675277A1 (en) 1992-10-16
CA2066064C (en) 2001-07-31
DE4212660C2 (en) 1997-11-06
DE4212660A1 (en) 1992-10-22
MY110099A (en) 1998-01-27
GB9208332D0 (en) 1992-06-03
AU1489192A (en) 1992-10-22

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20100414