GB1568948A - Guide number dial - Google Patents

Guide number dial Download PDF

Info

Publication number
GB1568948A
GB1568948A GB1691778A GB1691778A GB1568948A GB 1568948 A GB1568948 A GB 1568948A GB 1691778 A GB1691778 A GB 1691778A GB 1691778 A GB1691778 A GB 1691778A GB 1568948 A GB1568948 A GB 1568948A
Authority
GB
United Kingdom
Prior art keywords
window
diaphragm
scale
guide number
plate
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
GB1691778A
Other languages
English (en)
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.)
Sunpak KK
Original Assignee
Sunpak 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 Sunpak KK filed Critical Sunpak KK
Publication of GB1568948A publication Critical patent/GB1568948A/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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C3/00—Arrangements for table look-up, e.g. menstruation table
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices
    • G06G1/0005—Hand manipulated computing devices characterised by a specific application
    • G06G1/0042—Hand manipulated computing devices characterised by a specific application for optics, for photography

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Optics & Photonics (AREA)
  • Computing Systems (AREA)
  • Stroboscope Apparatuses (AREA)
  • Exposure Control For Cameras (AREA)
GB1691778A 1977-12-02 1978-04-28 Guide number dial Expired GB1568948A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1977160933U JPS6246180Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1977-12-02 1977-12-02

Publications (1)

Publication Number Publication Date
GB1568948A true GB1568948A (en) 1980-06-11

Family

ID=15725374

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1691778A Expired GB1568948A (en) 1977-12-02 1978-04-28 Guide number dial

Country Status (3)

Country Link
JP (1) JPS6246180Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1568948A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
HK (1) HK60180A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144893A (en) * 1983-07-07 1985-03-13 Pal Bjorn Olsen A device for combination of data
GB2148564A (en) * 1983-10-24 1985-05-30 Herbert John Duce Logarithmic calculating appliance
GB2173329A (en) * 1985-03-05 1986-10-08 Brian Walker Currency converter
GB2208252A (en) * 1987-07-13 1989-03-15 Muriel Astrid Reed Slide calculator for background lighting
GB2212955A (en) * 1987-11-26 1989-08-02 Frank John Allford Gilham Photographic depth of field indicator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS604168Y2 (ja) * 1974-09-13 1985-02-05 オリンパス光学工業株式会社 ストロボのデ−タ表示装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144893A (en) * 1983-07-07 1985-03-13 Pal Bjorn Olsen A device for combination of data
GB2148564A (en) * 1983-10-24 1985-05-30 Herbert John Duce Logarithmic calculating appliance
GB2173329A (en) * 1985-03-05 1986-10-08 Brian Walker Currency converter
GB2208252A (en) * 1987-07-13 1989-03-15 Muriel Astrid Reed Slide calculator for background lighting
GB2208252B (en) * 1987-07-13 1990-09-26 Muriel Astrid Reed Slide calculator for background lighting
GB2212955A (en) * 1987-11-26 1989-08-02 Frank John Allford Gilham Photographic depth of field indicator
GB2212955B (en) * 1987-11-26 1992-08-12 Frank John Allford Gilham Photographic depth of field indicator

Also Published As

Publication number Publication date
JPS5487737U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1979-06-21
HK60180A (en) 1980-10-31
JPS6246180Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1987-12-11

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee