CA1020790A - Automatic exposure control system - Google Patents

Automatic exposure control system

Info

Publication number
CA1020790A
CA1020790A CA204,118A CA204118A CA1020790A CA 1020790 A CA1020790 A CA 1020790A CA 204118 A CA204118 A CA 204118A CA 1020790 A CA1020790 A CA 1020790A
Authority
CA
Canada
Prior art keywords
control system
exposure control
automatic exposure
automatic
exposure
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.)
Expired
Application number
CA204,118A
Other languages
English (en)
Other versions
CA204118S (en
Inventor
Bruce K. Johnson
George D. Whiteside
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.)
Polaroid Corp
Original Assignee
Polaroid Corp
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 Polaroid Corp filed Critical Polaroid Corp
Application granted granted Critical
Publication of CA1020790A publication Critical patent/CA1020790A/en
Expired 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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/70—Exposure-making shutters; Diaphragms with flash-synchronising contacts
    • 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
    • G03B7/16—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with both the intensity of the flash source and the distance of the flash source from the object, e.g. in accordance with the "guide number" of the flash bulb and the focusing of the camera

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Shutters For Cameras (AREA)
CA204,118A 1973-07-05 1974-07-04 Automatic exposure control system Expired CA1020790A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37651373A 1973-07-05 1973-07-05

Publications (1)

Publication Number Publication Date
CA1020790A true CA1020790A (en) 1977-11-15

Family

ID=23485320

Family Applications (1)

Application Number Title Priority Date Filing Date
CA204,118A Expired CA1020790A (en) 1973-07-05 1974-07-04 Automatic exposure control system

Country Status (6)

Country Link
JP (1) JPS5724527B2 (enrdf_load_stackoverflow)
AU (1) AU498429B2 (enrdf_load_stackoverflow)
CA (1) CA1020790A (enrdf_load_stackoverflow)
DE (1) DE2432481C2 (enrdf_load_stackoverflow)
FR (1) FR2236203B1 (enrdf_load_stackoverflow)
GB (1) GB1450633A (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972057A (en) * 1975-03-03 1976-07-27 Polaroid Corporation Exposure control system with follow focus capability
US3977014A (en) * 1975-03-03 1976-08-24 Polaroid Corporation Follow focus exposure control system with improved uniform trim control
US3995295A (en) * 1975-08-28 1976-11-30 Polaroid Corporation Electro-mechanical shutter system having mechanical latch
US4104653A (en) * 1977-05-31 1978-08-01 Polaroid Corporation Scanning shutter blade arrangement with ambient and flash ranges
US4255030A (en) * 1979-09-13 1981-03-10 Polaroid Corporation Camera with proportional fill flash quench strobe
US4299461A (en) * 1980-03-31 1981-11-10 Polaroid Corporation Exposure and flash fire control system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1290805U (enrdf_load_stackoverflow) *
DE1806487A1 (de) * 1968-10-31 1970-05-14 Agfa Gevaert Ag Fotografische Kamera
GB1391292A (en) * 1971-08-03 1975-04-23 Polaroid Corp Photographic exposure control systems

Also Published As

Publication number Publication date
JPS5034535A (enrdf_load_stackoverflow) 1975-04-02
AU7054374A (en) 1976-01-08
FR2236203A1 (enrdf_load_stackoverflow) 1975-01-31
DE2432481A1 (de) 1975-01-23
DE2432481C2 (de) 1986-04-30
GB1450633A (en) 1976-09-22
FR2236203B1 (enrdf_load_stackoverflow) 1979-08-03
JPS5724527B2 (enrdf_load_stackoverflow) 1982-05-25
AU498429B2 (en) 1979-03-15

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