Johnson Three-Tint actinometer
. Metal box with wooden paper holder. Circular aperture with yellow tinted glass and three segments of different densities
Details
- Category:
- Photographic Technology
- Collection:
- Kodak Collection
- Object Number:
- 1990-5036/501
- Materials:
- metal (unknown), wood (unidentified) and glass
- type:
- actinometer
- credit:
- The Kodak Collection at the National Media Museum, Bradford
