CA997191A - Focus responsive exposure control system - Google Patents

Focus responsive exposure control system

Info

Publication number
CA997191A
CA997191A CA139,541A CA139541A CA997191A CA 997191 A CA997191 A CA 997191A CA 139541 A CA139541 A CA 139541A CA 997191 A CA997191 A CA 997191A
Authority
CA
Canada
Prior art keywords
control system
exposure control
focus responsive
responsive exposure
focus
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
CA139,541A
Other languages
English (en)
Other versions
CA139541S (en
Inventor
Vaito K. Eloranta
Edwin K. Shenk
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
Priority to CA241,128A priority Critical patent/CA999177A/en
Application granted granted Critical
Publication of CA997191A publication Critical patent/CA997191A/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
    • 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)
  • Shutters For Cameras (AREA)
  • Exposure Control For Cameras (AREA)
  • Stroboscope Apparatuses (AREA)
CA139,541A 1971-04-19 1972-04-12 Focus responsive exposure control system Expired CA997191A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA241,128A CA999177A (en) 1971-04-19 1975-12-05 Focus responsive exposure control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13521171A 1971-04-19 1971-04-19

Publications (1)

Publication Number Publication Date
CA997191A true CA997191A (en) 1976-09-21

Family

ID=22467043

Family Applications (1)

Application Number Title Priority Date Filing Date
CA139,541A Expired CA997191A (en) 1971-04-19 1972-04-12 Focus responsive exposure control system

Country Status (8)

Country Link
US (1) US3750543A (it)
JP (1) JPS5618933B1 (it)
CA (1) CA997191A (it)
DE (1) DE2219021C3 (it)
FR (1) FR2144217A5 (it)
GB (1) GB1371995A (it)
IT (1) IT952725B (it)
NL (1) NL182587C (it)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838433A (en) * 1969-07-15 1974-09-24 Minolta Camera Kk Electric shutter for a camera
JPS5327931B2 (it) * 1972-09-16 1978-08-11
DE2352076C3 (de) * 1973-10-17 1978-08-31 Kodak Ag, 7000 Stuttgart Photographische Kamera mit mehreren wahlweise verwendbaren Objektiven und einem Blendenverschluß
US3945025A (en) * 1973-11-12 1976-03-16 Polaroid Corporation Exposure control system
GB1508452A (en) * 1974-04-18 1978-04-26 West Electric Co Optical control systems
US3864700A (en) * 1974-05-20 1975-02-04 Rollei Werke Franke Heidecke Diaphragm adjusting mechanism for photographic cameras
US3942183A (en) * 1974-07-02 1976-03-02 Polaroid Corporation Camera with pivoting blades
JPS5847688B2 (ja) * 1974-10-18 1983-10-24 ウエストデンキ カブシキガイシヤ 露出制御装置
US3950766A (en) * 1974-11-22 1976-04-13 Polaroid Corporation Exposure control system employing blade sensing follow focus arrangement
US3977014A (en) * 1975-03-03 1976-08-24 Polaroid Corporation Follow focus exposure control system with improved uniform trim control
JPS5293323A (en) * 1976-01-31 1977-08-05 Fuji Photo Film Co Ltd Electromagnetic shutter
US4023187A (en) * 1975-10-03 1977-05-10 Polaroid Corporation Exposure control system with fill flash race condition
US4008481A (en) * 1975-10-03 1977-02-15 Polaroid Corporation Exposure control system with separate flash and ambient trigger levels
US4017873A (en) * 1975-10-03 1977-04-12 Polaroid Corporation Exposure control system with braking capability
US4104653A (en) * 1977-05-31 1978-08-01 Polaroid Corporation Scanning shutter blade arrangement with ambient and flash ranges
US4185144A (en) * 1978-09-05 1980-01-22 Polaroid Corporation Electrochemical cell with a cadmium patch electrode
US4209243A (en) * 1978-12-01 1980-06-24 Polaroid Corporation Shutter and trim apparatus
US4312582A (en) * 1981-03-03 1982-01-26 Polaroid Corporation Exposure control and focusing apparatus for use in a photographic camera
US4338011A (en) * 1981-03-03 1982-07-06 Polaroid Corporation Photographic camera apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326103A (en) * 1964-12-09 1967-06-20 Polaroid Corp Auxiliary shutter timing mechanism
US3605588A (en) * 1968-06-25 1971-09-20 Eastman Kodak Co Photographic camera with electronically controlled lens diapharagm
US3641889A (en) * 1970-09-02 1972-02-15 Polaroid Corp Exposure control system

Also Published As

Publication number Publication date
NL7205182A (it) 1972-10-23
DE2219021A1 (de) 1972-10-26
NL182587C (nl) 1988-04-05
IT952725B (it) 1973-07-30
FR2144217A5 (it) 1973-02-09
GB1371995A (en) 1974-10-30
JPS5618933B1 (it) 1981-05-02
DE2219021C3 (de) 1980-01-24
NL182587B (nl) 1987-11-02
US3750543A (en) 1973-08-07
DE2219021B2 (de) 1978-10-19

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