internegative

An internegative also referred to as Color reversal internegative, or CRI, is motion picture film duplication process designed by Kodak in the 1970s as a workaround for the existing processes of creating film duplicates. Originally intended for the faster pace of the television commercial industry, it began to see use in major motion pictures of the mid 1970s. It is the color counterpart to a fine grain positive, in which a low-contrast color image is used as the positive between an original camera negative and a duplicate negative.