Hurter & Driffield — H D Kurve in der Sensitometrie Ferdinand Hurter (1844 1898) und Vero Charles Driffield (1848–1915) waren Wissenschaftler des 19. Jahrhunderts auf dem Gebiet der Fotografie. Sie untersuchten die Fotografie quantitativ und verwendeten Methoden der… … Deutsch Wikipedia
Driffield — For the units of optical density, see Hurter and Driffield. Coordinates: 54°00′18″N 0°26′17″W / 54.005°N 0.438°W / … Wikipedia
Hurter and Driffield — Ferdinand Hurter (1844–1898) and Vero Charles Driffield (1848–1915) were nineteenth century photographic scientists who brought quantitative scientific practice to photography through the methods of sensitometry and densitometry. Among their… … Wikipedia
Ferdinand Hurter — (* 16. März 1844 in Schaffhausen; † 5. März 1898 in Widnes[1]) war ein Schweizer Chemiker und Fotografietheoretiker. Leben Hurters Elte … Deutsch Wikipedia
Vero Charles Driffield — (1848–1915) was a chemical engineer who also became involved in photographic research.Driffield was educated at Liverpool Collegiate and Sandbach Grammar School. He also attended a private school in Southport where he came into contact with a… … Wikipedia
Ferdinand Hurter — Infobox Scientist name = Ferdinand Hurter image width = caption = Ferdinand Hurter. Photograph taken by his colleague in photographic research, Vero Charles Driffield birth date = 15 March 1844 birth place = Schaffhausen, Switzerland death date … Wikipedia
Ferdinand Hurter — Ferdinand Hurter. Photographie prise par son collègue de recherche, Vero Charles Driffield Naissance 15 mars 1844 Schaffhouse (Suisse) Décès 1 … Wikipédia en Français
Film speed — is the measure of a photographic film s sensitivity to light, determined by sensitometry and measured on various numerical scales, the most recent being the ISO system. A closely related ISO system is used to measure the sensitivity of digital… … Wikipedia
Sensitometry — is the scientific study of light sensitive materials, especially photographic film. The study has its origins in the work by Ferdinand Hurter and Vero Charles Driffield (circa 1876) with early black and white emulsions. [Hurter, Ferdinand… … Wikipedia
Filmempfindlichkeit — Als Filmempfindlichkeit (engl. film speed) bezeichnet man die Lichtempfindlichkeit von fotografischen Platten und Filmen. Die Filmempfindlichkeit wird heute in ISO und teilweise zu Vergleichszwecken auch noch in DIN, ASA oder GOST angegeben;… … Deutsch Wikipedia