Sensitivity Enhancement.
Abstract
This effort has demonstrated the feasibility of a technique (Concurrent Photon Amplification) to increase the rated speed of commercially available black and white film. The technique uses a supplemental non-imaging low light exposure concurrently with the image forming exposure. The technique has been installed in a Nikon F and Hasselblad 500 EL cameras. Tests with Kodak 2475, Tri-X, Pan, Panatomic-X and High Speed Infrared films have shown an increase in speed in every case, with the results being average speed increase of 2 to 4 times the rated film speed. In addition to the speed gain, there was an increase in the dynamic range and no loss in image quality of the film. A technique for use with processed films that provide a speed increase by physical development was also investigated. The technique was tested with the type films listed above and provided a speed increase of approximately 1/2 the rated film speed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1973
- Accession Number
- AD0913419
Entities
People
- Charles M. Bloom
- M. R. Cole