This U.S. industry comprises establishments (except those known as "one-hour" photofinishing labs) primarily engaged in developing film and/or making photographic slides, prints, and enlargements. Cross-References. ? Establishments primarily engaged in processing motion picture film for the motion picture and television industries are classified in U.S. Industry 512199, Other Motion Picture and Video Industries; and ? Establishments known as "one-hour" photofinishing labs are classified in U.S. Industry 812922, One-Hour Photofinishing.