Negative cutting
Negative cutting (also known as negative matching and negative conforming) is the process of cutting motion picture negative to match precisely the final edit as specified by the film editor. Original camera negative (OCN) is cut with scissors and joined using a film splicer and film cement. Negative cutting is part of the post-production process and occurs after editing and prior to striking internegatives and release prints. The process of negative cutting has changed little since the beginning of cinema in the early 20th century. In the early 1980s computer software was first used to aid the cutting process. Kodak introduced barcode on motion picture negative in the mid-1990s. This enabled negative cutters to more easily track shots and identify film sections based on keykode.