APEX system (original) (raw)
APEX stands for Additive System of Photographic Exposure, whichwas proposed in the 1960 ASA standardfor monochrome film speed, ,as a means of simplifying exposure computation.
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| dbo:abstract | APEX stands for Additive System of Photographic Exposure, whichwas proposed in the 1960 ASA standardfor monochrome film speed, ,as a means of simplifying exposure computation. (en) Das APEX-System (englisch Additive System of Photographic Exposure; deutsch: Additives System zur fotografischen Belichtung) stellt die in der fotografischen Belichtung wesentlichen Werte als kleine ganze Zahlen dar, meist im Bereich 0 bis 10. Das System ist logarithmisch aufgebaut und ermöglicht es dadurch, gewünschte Belichtungswerte durch einfache Additionen und Subtraktionen zu ermitteln. Beispiel: Wenn der APEX-Wert für die Belichtungszeit um 1 erhöht wird (was eine Halbierung der Belichtungszeit bedeutet), muss der APEX-Wert für die Blendenzahl um 1 erniedrigt werden, um bei ansonsten gleichen Bedingungen dieselbe Belichtung zu erhalten. Das Verfahren wurde im Rahmen der Normen ASA PH2.5-1960, ASA PH2.12-1961 und ANSI PH3.49-1971 vorgestellt. (de) APEX (acronyme de « Additive system of Photography EXposure ») est une méthode de calcul du temps d'exposition basée sur une mesure en Ev (Exposure value) adoptée par la plupart des posemètres. Elle utilise une échelle logarithmique facile à manipuler puisque les calculs se limitent à l'addition. (fr) L'Additive System of Photographic Exposure (APEX) è un sistema proposto nel 1961 dall'American Standards Association per il calcolo dell'esposizione. Dal 2002 Exif 2.2 è conforme ad APEX. (it) APEX, А́пекс — аддитивная система определения экспозиции (англ. Additive system of Photographic Exposure), предложенная в США в 1960 году для упрощения вычисления экспозиционных параметров при фотосъёмке. Стандарт ASA PH2.5-1960 предусматривал специальную шкалу светочувствительности, предназначенную для совместного использования с системой. (ru) |
| dbo:wikiPageExternalLink | http://dougkerr.net/Pumpkin/%23APEX http://www.exif.org/Exif2-2.PDF http://www.iso.org/iso/en/CatalogueDetailPage.CatalogueDetail%3FCSNUMBER=7690 |
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| rdfs:comment | APEX stands for Additive System of Photographic Exposure, whichwas proposed in the 1960 ASA standardfor monochrome film speed, ,as a means of simplifying exposure computation. (en) APEX (acronyme de « Additive system of Photography EXposure ») est une méthode de calcul du temps d'exposition basée sur une mesure en Ev (Exposure value) adoptée par la plupart des posemètres. Elle utilise une échelle logarithmique facile à manipuler puisque les calculs se limitent à l'addition. (fr) L'Additive System of Photographic Exposure (APEX) è un sistema proposto nel 1961 dall'American Standards Association per il calcolo dell'esposizione. Dal 2002 Exif 2.2 è conforme ad APEX. (it) APEX, А́пекс — аддитивная система определения экспозиции (англ. Additive system of Photographic Exposure), предложенная в США в 1960 году для упрощения вычисления экспозиционных параметров при фотосъёмке. Стандарт ASA PH2.5-1960 предусматривал специальную шкалу светочувствительности, предназначенную для совместного использования с системой. (ru) Das APEX-System (englisch Additive System of Photographic Exposure; deutsch: Additives System zur fotografischen Belichtung) stellt die in der fotografischen Belichtung wesentlichen Werte als kleine ganze Zahlen dar, meist im Bereich 0 bis 10. Das System ist logarithmisch aufgebaut und ermöglicht es dadurch, gewünschte Belichtungswerte durch einfache Additionen und Subtraktionen zu ermitteln. Das Verfahren wurde im Rahmen der Normen ASA PH2.5-1960, ASA PH2.12-1961 und ANSI PH3.49-1971 vorgestellt. (de) |
| rdfs:label | APEX (Fotografie) (de) APEX system (en) APEX (photographie) (fr) Additive System of Photographic Exposure (it) APEX (фотография) (ru) |
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