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. [image-making processes and techniques]
6. [photography and photographic processes and techniques]
7. photographic processes
8. direct positive processes

Anotations

Scope note:

A direct positive process to make photographic prints in which a physically developed, unfixed print containing exposed silver chloride is soaked in a solution of potassium iodide and is bleached in relation to exposure in the camera.