protective masterの例文

• The negative wasn't cleaned before the protective masters were made, meaning that dirt specks became part of the permanent record.
• Had the protective masters been examined, Harris contends, it would have been readily apparent that the yellow master had been underexposed and was extremely thin.
• After the negative had been used to make hundreds of exhibition prints, it was preserved on YCM protective masters, a three-strip process in which the film is broken down into three basic colors _ yellow, cyan and magenta.