Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]
5. analysis and testing techniques
6. measuring
7. sensitometry

Anotations

Scope note:

Refers to measuring the sensitivity of photographic film, specifically recording the film’s response to light exposure and silver formation in development. The process entails exposing film to graduated levels of light, recording the density of produced-silver deposit and plotting this data on a graph against the logarithm of the exposure.