This Internal Note presents the development of the Saturn inflight photographic instrumentation program from its original development requirement concept to the flight hardware application on Saturn vehicles. A comprehensive description of the infight photographic instrumentation system is given along with data concerning testing, operation, application, and evaluation of the system after recovery. This Internal Note shows that the system has been successfully developed,that valuable information has been obtained from film retrieved from recovered capsules, and that the system can be used with a high degree of reliability.