AT86310B - Procedure for determining the duration of exposure with gray wedge. - Google Patents

Procedure for determining the duration of exposure with gray wedge.

Info

Publication number
AT86310B
AT86310B AT86310DA AT86310B AT 86310 B AT86310 B AT 86310B AT 86310D A AT86310D A AT 86310DA AT 86310 B AT86310 B AT 86310B
Authority
AT
Austria
Prior art keywords
exposure
determining
duration
procedure
gray wedge
Prior art date
Application number
Other languages
German (de)
Inventor
Walter Dr Hecht
Original Assignee
Walter Dr Hecht
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 Walter Dr Hecht filed Critical Walter Dr Hecht
Application granted granted Critical
Publication of AT86310B publication Critical patent/AT86310B/en

Links

Landscapes

  • Control Of Exposure In Printing And Copying (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Bestimmung der Expositionsdauer mit Graukeil. 



   Den Gegenstand der vorliegenden Erfindung bildet ein Verfahren zur Ermittlung der günstigsten Expositionszeit bei photographischen Aufnahmen auf Grund der auf das Objektiv bzw. der auf die Platte wirksamen Lichtmenge mit Hilfe eines Graukeiles oder eines anderen Mediums von verschiedener Transparenz. 



   Die bisherigen Behelfe waren entweder rein rechnerische Natur, wie die von Rheden verfassten Belichtungsstabellen, und mussten die Lichtmenge aus drei subjektiv geschätzten Fakto : en und anderen rein rechnerisch ermitteln-konnten daher stets nur annähernd stimmen-oder sie benutzten das Verfahren der Schwärzung photoglaphischer Papiere. wie z. B. Wynnes intallible exposameter. Letzteres Verfahren hat eine grosse subjektive 
 EMI1.1 
 Form einer auf einem lichtempfindlichen Medium gut wahrnehmbaren   Malke   gegenübersteht. 



  Von den anderen Belichtungsmessern sind die optischen am meisten bekannt, die sich zum Teil auch eines Keiles bedienen, aber gerade den Hauptanteil der auf die Platten wirksamen Strahlen nicht messen. 



   Überdies schliesst das Verfahren der vorliegenden Erfindung eine nach gleichem System vorgenommene Plattenprüfung ein, so dass die Expositionszeitermittlung ein einheitliches geschlossenes Ganzes bildet. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Procedure for determining the duration of exposure with gray wedge.



   The subject matter of the present invention is a method for determining the most favorable exposure time for photographic recordings based on the amount of light acting on the objective or on the plate with the aid of a gray scale or another medium of different transparency.



   The previous aids were either of a purely arithmetical nature, such as the exposure tables written by Rheden, and had to determine the amount of light from three subjectively estimated factors: s and others purely arithmetically - could therefore only be approximately correct - or they used the process of blackening photographic paper. such as B. Wynnes intallible exposameter. The latter method has a great subjective
 EMI1.1
 The shape of a mark that is easily perceptible on a light-sensitive medium



  Of the other exposure meters, the optical ones are best known, some of which also use a wedge, but do not measure the majority of the rays acting on the plates.



   In addition, the method of the present invention includes a plate test carried out according to the same system, so that the exposure time determination forms a unified, closed whole.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Bestimmung der Belichtungs- (Expositions-) Zeit mittels Graukeiles oder eines anderen Mediums von verschiedener Transparenz, dadurch gekennzeichnet, dass die wirksame Lichtmenge auf lichtempfindlichem Medium registriert bzw. abgelesen wird. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Method for determining the exposure time by means of a gray wedge or another medium of different transparency, characterized in that the effective amount of light is registered or read on the light-sensitive medium. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT86310D 1920-12-02 1920-12-02 Procedure for determining the duration of exposure with gray wedge. AT86310B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT86310T 1920-12-02

Publications (1)

Publication Number Publication Date
AT86310B true AT86310B (en) 1921-11-10

Family

ID=3607194

Family Applications (1)

Application Number Title Priority Date Filing Date
AT86310D AT86310B (en) 1920-12-02 1920-12-02 Procedure for determining the duration of exposure with gray wedge.

Country Status (1)

Country Link
AT (1) AT86310B (en)

Similar Documents

Publication Publication Date Title
Ohta et al. Morphometric evaluation of first sacral ganglia of man
AT86310B (en) Procedure for determining the duration of exposure with gray wedge.
DE600943C (en) Surface quality meter
AT105297B (en) Combination of prisms with color filters for the projection of multicolor cinematograms.
AT103154B (en) Illuminated advertising cinematograph.
AT104547B (en) Process for the production of patterns.
DE462090C (en) Process for increasing the ability of animal fibers to absorb dyes
DE956558C (en) Process for producing gloss on photographic positives
CH182762A (en) Method and device for measuring the elasticity of bandage bands in the manufacturing process for foot bandages.
FR682802A (en) Method and apparatus for producing printing plates
DE457410C (en) Process for the production of printing blocks by electroforming a photographic source image
DE476631C (en) Transparent image made of paper or other translucent surface
AT130773B (en) Washer for gramophones for holding speech plates stuck to photographs.
AT120667B (en) Method and device for visualization or photographic recording of sound waves.
AT109957B (en) Method and device for determining the wear and working resistance of test bodies.
FR682198A (en) Method and device for winding or winding wire in helical form
AT154258B (en) Procedure for the detection of manufacturing defects in stockings.
EDGERTON and to the school man who tries to keep
DE1033599B (en) Process for the regeneration of desalination and silicification exchangers
DE420424C (en) Process for the production of dimensionally stable bungs
DE506465C (en) Test for the clinical assessment of x-rays
AT138342B (en)
DE365838C (en) Scales for reading the weight of certain quantities of water-containing substances in different conditions
DE426660C (en) Photographic plates
FR566543A (en) Method and apparatus for tinting imitation celluloid, real scale or imitation celluloid horn