Original sentence: Positive-positive color process was abandoned in the mid-1950s, and even then it was restricted to 16mm.Usually, two interpositives were made, one for archival purposes and one for making printing internegatives
Edited sentence: The positive-positive color process was abandoned in the mid-1950s, and even then it was restricted to 16mm.Usually, two interpositives were made, one for archival purposes and the other one for making printing internegatives