Hurter and Driffield
From Infogalactic: the planetary knowledge core
File:H&D curve.png
H & D curve used in sensitometry
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.
Hurter & Driffield's actinograph.
Among their other innovations was a photographic exposure estimation device known as an actinograph.[1]
See also
- H&D speed numbers, originally described in 1890, for film speed measurements
References
<templatestyles src="Reflist/styles.css" />
Cite error: Invalid <references> tag; parameter "group" is allowed only.
<references />, or <references group="..." />External links
<templatestyles src="Asbox/styles.css"></templatestyles>
 |
This photography-related article is a stub. You can help Wikipedia by expanding it. |
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
