CA997190A - Apparatus and system for flash photography - Google Patents

Apparatus and system for flash photography

Info

Publication number
CA997190A
CA997190A CA148,586A CA148586A CA997190A CA 997190 A CA997190 A CA 997190A CA 148586 A CA148586 A CA 148586A CA 997190 A CA997190 A CA 997190A
Authority
CA
Canada
Prior art keywords
flash photography
photography
flash
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
CA148,586A
Other languages
English (en)
Other versions
CA148586S (en
Inventor
Lawrence M. Douglas
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 CA224,263A priority Critical patent/CA997192A/en
Priority to CA243,080A priority patent/CA1000544A/en
Application granted granted Critical
Publication of CA997190A publication Critical patent/CA997190A/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
    • G03B7/08—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
    • G03B7/081—Analogue circuits
    • 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
    • G03B7/17—Selection of modes in flash units by exposure control arrangements
    • 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
CA148,586A 1971-08-03 1972-08-02 Apparatus and system for flash photography Expired CA997190A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA224,263A CA997192A (en) 1971-08-03 1975-04-10 Photographic exposure control system
CA243,080A CA1000544A (en) 1971-08-03 1976-01-07 Camera exposure system with unitary trim control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16867171A 1971-08-03 1971-08-03

Publications (1)

Publication Number Publication Date
CA997190A true CA997190A (en) 1976-09-21

Family

ID=22612453

Family Applications (1)

Application Number Title Priority Date Filing Date
CA148,586A Expired CA997190A (en) 1971-08-03 1972-08-02 Apparatus and system for flash photography

Country Status (6)

Country Link
JP (2) JPS4825521A (ja)
CA (1) CA997190A (ja)
DE (1) DE2237838C2 (ja)
FR (1) FR2149857A6 (ja)
GB (1) GB1391292A (ja)
IT (1) IT1046467B (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1450633A (en) * 1973-07-05 1976-09-22 Polaroid Corp Exposure control system
US3950766A (en) * 1974-11-22 1976-04-13 Polaroid Corporation Exposure control system employing blade sensing follow focus arrangement
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
JPS5617526Y2 (ja) * 1977-02-14 1981-04-23
GB2261303B (en) * 1989-03-31 1993-09-15 Asahi Optical Co Ltd Zooming adjustment of a zoom lens
JP2550785B2 (ja) * 1991-02-08 1996-11-06 株式会社ダイフク レール敷設構造

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5618933A (en) * 1979-07-23 1981-02-23 Kuraray Co Ltd Dihydroxy aluminum salt of substituted acetic acid and its preparation

Also Published As

Publication number Publication date
JPS5882229A (ja) 1983-05-17
AU4517572A (en) 1974-02-07
GB1391292A (en) 1975-04-23
DE2237838C2 (de) 1982-09-23
DE2237838A1 (de) 1973-02-15
JPS6113568B2 (ja) 1986-04-14
JPS4825521A (ja) 1973-04-03
FR2149857A6 (ja) 1973-03-30
IT1046467B (it) 1980-06-30

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