GB820671A - Means on photographic and cinematographic fixed focus objectives for indicating the depth of field - Google Patents

Means on photographic and cinematographic fixed focus objectives for indicating the depth of field

Info

Publication number
GB820671A
GB820671A GB14005/57A GB1400557A GB820671A GB 820671 A GB820671 A GB 820671A GB 14005/57 A GB14005/57 A GB 14005/57A GB 1400557 A GB1400557 A GB 1400557A GB 820671 A GB820671 A GB 820671A
Authority
GB
United Kingdom
Prior art keywords
scales
limit
stop number
ring
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
GB14005/57A
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.)
MARGARETE CAMILLA SCHNEIDER
Original Assignee
MARGARETE CAMILLA SCHNEIDER
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 MARGARETE CAMILLA SCHNEIDER filed Critical MARGARETE CAMILLA SCHNEIDER
Publication of GB820671A publication Critical patent/GB820671A/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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Diaphragms For Cameras (AREA)

Abstract

820,671. Photographic cameras. SCHNEIDER, M. C. May 2, 1957 [July 14, 1956], No. 14005/57. Class 98(1) For indicating the depth of field on a fixed focus objective, an aperture setting ring carries, in addition to a stop number scale, one or more focus limit scales, a stationary lens mount having a window each for the stop number and focus limit scales. As shown, an annular extension c<SP>1</SP> of an aperture setting ring c carries stop number and distance scales; such that for a certain stop setting, the stop number g appears in a window i in a ring a<SP>3</SP>, and the new value of the limit of satisfactory focus is indicated at h through a window k whilst the far value (#) is engraved on the outside of the ring.' Additional coloured scales may be provided for use with auxiliary lenses, and if the far limit is not at infinity, a second scale (not shown) may be provided.
GB14005/57A 1956-07-14 1957-05-02 Means on photographic and cinematographic fixed focus objectives for indicating the depth of field Expired GB820671A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE820671X 1956-07-14

Publications (1)

Publication Number Publication Date
GB820671A true GB820671A (en) 1959-09-23

Family

ID=6737870

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14005/57A Expired GB820671A (en) 1956-07-14 1957-05-02 Means on photographic and cinematographic fixed focus objectives for indicating the depth of field

Country Status (1)

Country Link
GB (1) GB820671A (en)

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