Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Visual Works (hierarchy name)
5. visual works (works)
6. [visual works by material or technique]
7. photographs
8. [photographs by form]
9. positives (photographs)
10. photographic transparencies

Narrower term/s

• Agfacolor plates [NP]
• Paget plates
• Dufaycolor plates

Anotations

Scope note:

Glass or plastic supports on which images are created using a screen process. With this process, additive color images are created using a screen of red, green, or blue filters to record the relative intensity of each hue on a panchromatic, black-and-white emulsion which is processed to form a transparency. When viewed through a similar filter, each filter contributes its hue with its intensity modulated by the silver image.