With most adjustable cameras, however, flash guide numbers provide the most convenient means for determining flash exposure. Guide numbers have been established for the speed of the film that is being used, the type of flashbulb andanbsp;...
|Title||:||Planning and producing slide programs|
|Author||:||Eastman Kodak Company. Motion Picture and Audiovisual Markets Division|
|Publisher||:||Eastman Kodak Co - 1975|