Evaluation of film type QX 807 (SO-368, Kodak Ektachrome MS, Estar thin base, with an equivalent Wratten 2A filter overcoat)
Abstract
A color film with a sensitivity and color balance equal to SO-368, Kodak MS Ektachrome (Estar thin base) was required for use on the Apollo-Soyuz test project (ASTP). A Wratten 2A filter was required for use with the film to reduce short wavelength effects which frequently produce a blue color balance in aerial photographs. The background regarding a special emulsion which was produced with a 2A filter equivalent as an integral part of an SO-368 film manufactured by Eastman Kodak, the cost for production of the special film, and the results of a series of tests made within PTD to certify the film for ASTP use are documented. The tests conducted and documented were physical inspection, process compatibility, effective sensitivity, color balance, cross section analysis, resolution, spectral sensitivity, consistency of results, and picture sample analysis.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- April 1975
- Bibcode:
- 1975STIN...7521598L
- Keywords:
-
- Apollo Soyuz Test Project;
- Color Photography;
- Photographic Film;
- Aerial Photography;
- Performance Prediction;
- Performance Tests;
- Spectrum Analysis;
- Instrumentation and Photography