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DE682998C - Process for the photographic production of gradual gray wedges - Google Patents

Process for the photographic production of gradual gray wedges

Info

Publication number
DE682998C
DE682998C DEU13542D DEU0013542D DE682998C DE 682998 C DE682998 C DE 682998C DE U13542 D DEU13542 D DE U13542D DE U0013542 D DEU0013542 D DE U0013542D DE 682998 C DE682998 C DE 682998C
Authority
DE
Germany
Prior art keywords
gray
wedges
photographic
photographic production
gray wedges
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
DEU13542D
Other languages
German (de)
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.)
Universum Film AG
Original Assignee
Universum Film AG
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 Universum Film AG filed Critical Universum Film AG
Priority to DEU13542D priority Critical patent/DE682998C/en
Application granted granted Critical
Publication of DE682998C publication Critical patent/DE682998C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
    • G01J1/22—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using a variable element in the light-path, e.g. filter, polarising means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Description

Verfahren zur photographischen Herstellung von verlaufenden Graukeilen Die Herstellung farbiger oder grauer Photometerkeile durch elektrothermische Zerstäubung von Stoffen, vorzugsweise Edelmetallen, auf geeignete Unterlage ist ibLekannt. eine andere Gruppe von Verfahren zur Herstellung von Graukeilen besteht darin, entsprechend gestaltete, rasch umlauwende Scheiben oder Zylinder unter im, er gleichbleibenden Bedingungen photographisch mehrmals mit abgestuften Belichtungszeiten auf einer Platte nebeneinander aufzunehmen.Process for the photographic production of gradual gray wedges The production of colored or gray photometer wedges by electrothermal atomization of materials, preferably precious metals, on a suitable base is known. one Another group of methods for making gray wedges is to use accordingly designed, rapidly rotating discs or cylinders under the, he constant Conditions photographically several times with graduated exposure times on one Record side by side.

Gemäß dem Verfahren nach der Erfindung werden verlaufende Graukeile ebenfalls photographisch hergestellt, jedoch in neuartiger und einfacher Weise dadurch, daß mittels an sich bekannter Zerstäuber, wie z. B. mittels Farbpistolen, auf einer großen Oberfläche ein Graukeil mit dem gewünschten Schwärzungsanstieg aufgespritzt und dieser auf photographischen Platten, Filmen o. dgl. verkleinert aufgenommen wird.According to the method according to the invention, running gray wedges are produced also produced photographically, but in a new and simple way by that by means of known atomizers, such as. B. by means of paint guns, on one A gray wedge with the desired increase in density is sprayed onto a large surface and this recorded on photographic plates, films or the like reduced in size will.

Zur Ausführung der Erfindung wird also auf eine große Fläche aus Papier, Leinwand o. dgl. ein Graukeil mit dem gewünschten Schwärzungsanstieg mit Hilfe einer Farbspritzpistole aufgestäubt und dieser Graukeil auf photographischen Pltten, Filmen o. dgl. verkleinert aufgenommen. Die Größe der ursprünglichen Ausführung und die Stärke der Verkleinerung sind dabei völlig beliebig, ebenfalls die Länge und die räumliche Anordnung der Graukeils. Der aufgespritzte Graukeil kann durch Nachbehandlung (Nachspritzen, Retusichen) jede beliebige optische Genauigkeit erhalten. Selbst ohne eine solahe Nachbehandlung jedoch verschwinden bei der photographischen Verkleinerung geringere Ungenauigkeiten der ursprünglichen Ausführung. Von einem aufgespritzten Graukeil können sehr schnell und einfach Verkleinerungen der verschiedensten Abmessungen hergestellt werden. In order to carry out the invention, a large area is needed Paper, canvas or the like with a gray wedge with the desired increase in density With the help of a paint spray gun and this gray wedge on photographic Plates, films or the like recorded in reduced size. The size of the original execution and the size of the reduction are completely arbitrary, as is the length and the spatial arrangement of the gray wedge. The sprayed-on gray wedge can go through After-treatment (post-injection, retouching) any desired optical accuracy can be obtained. However, even without such post-treatment, they disappear in the photographic Reduction in size reduces the inaccuracies of the original design. Of a Sprayed-on gray wedge can very quickly and easily reduce the most varied of items Dimensions are made.

Claims (1)

P A T E N T A N S P R U C H E : Verfahren zur photographische Herstellung von verlaufenden Graukeilen, dadurch gekennzeichnet, daß mittels an sich bekannter Zerstäuber auf einer großen Fläche ein Graukeil mit dem gewünschten Schwärzungsanstieg aufgespritzt und dieser auf photographischen Platten, Filmen o. dgl. verkleinert aufgenommen wird. P A T E N T A N S P R U C H E: Process for photographic production of running gray wedges, characterized in that by means of known Spray a gray wedge with the desired increase in density over a large area sprayed on and this on photographic plates, films o. The like. Reduced is recorded.
DEU13542D 1936-09-11 1936-09-11 Process for the photographic production of gradual gray wedges Expired DE682998C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEU13542D DE682998C (en) 1936-09-11 1936-09-11 Process for the photographic production of gradual gray wedges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEU13542D DE682998C (en) 1936-09-11 1936-09-11 Process for the photographic production of gradual gray wedges

Publications (1)

Publication Number Publication Date
DE682998C true DE682998C (en) 1939-10-24

Family

ID=7568353

Family Applications (1)

Application Number Title Priority Date Filing Date
DEU13542D Expired DE682998C (en) 1936-09-11 1936-09-11 Process for the photographic production of gradual gray wedges

Country Status (1)

Country Link
DE (1) DE682998C (en)

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