Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Tools and Equipment (hierarchy name)
5. equipment
6. [equipment by process]
7. image-making equipment
8. photographic equipment
9. [cameras and camera accessories]
10. camera equipment
11. camera filters

Anotations

Scope note:

Glass, plastic, or gelatin light filters that accentuate the appearance of clouds in the sky. These may be tinted in a variety of ways to achieve a particular effect depending on the type of camera or film used.