GB796560A - Improvements relating to photographic cameras - Google Patents

Improvements relating to photographic cameras

Info

Publication number
GB796560A
GB796560A GB14566/56A GB1456656A GB796560A GB 796560 A GB796560 A GB 796560A GB 14566/56 A GB14566/56 A GB 14566/56A GB 1456656 A GB1456656 A GB 1456656A GB 796560 A GB796560 A GB 796560A
Authority
GB
United Kingdom
Prior art keywords
scale
speed
ring
film
diaphragm
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
GB14566/56A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB796560A publication Critical patent/GB796560A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B7/00Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/003Control of exposure by setting shutters, diaphragms or filters, separately or conjointly setting of both shutter and diaphragm

Landscapes

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

Abstract

796,560. Photographic cameras. DECKEL, H., and DECKEL, F. W. May 10, 1956 [May 11, 1955], No. 14566/56. Class 98(1) In a photographic camera having a shutter speed setting ring and a diaphragm setting ring, one ring is provided with a light value scale and the other with a film speed scale co-operating therewith. Preferably, a marker is provided on the film speed scale to indicate the speed of the film contained in the camera and the light value scale is set to this member as to an index. Shutter speed and diaphragm aperture scales are also provided on the appropriate ring and co-operate with a fixed index on the camera body. After the light value has been set the shutter speed and diaphragm rings may be locked for rotation together to set any of the paired values of shutter speed or diaphragm aperture. The locking may consist in a tooth on the resiliently urged diaphragm ring engaging one of a number of notches in the shutter speed ring (Fig. 1, not shown) or the film speed marker may consist of a resilient arm 50 having a projection 52 engaging the knurling of the shutter speed ring 11 and tongues 53 engaging slots 54 in the diaphragm setting ring 12. By slightly bending the resilient arm 50 the locking may be disengaged and, by further bending, the marker becomes displaceable over the film speed scale 22. The light value scale 21 which corresponds to a similar scale in exposure meter, and the film-speed scale 22 are linear and any change by a single unit doubles or halves the exposure of the film.
GB14566/56A 1955-05-11 1956-05-10 Improvements relating to photographic cameras Expired GB796560A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE796560X 1955-05-11

Publications (1)

Publication Number Publication Date
GB796560A true GB796560A (en) 1958-06-11

Family

ID=6710979

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14566/56A Expired GB796560A (en) 1955-05-11 1956-05-10 Improvements relating to photographic cameras

Country Status (1)

Country Link
GB (1) GB796560A (en)

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