Color reversal internegative
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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.
Because CRIs are considered a temporary negative, their chemistry is not meant to be as stable as prints, and because of this, they are prone to rapid fading, usually on an average of within five to seven years. As a result, new masters have had to be created from the original camera negative accordingly.
