Copy several generations removed from original — each duplication degrades image and color fidelity. Critical concept in archival and restoration work.
Generation
In the celluloid workflow, a generation refers to the position of a film print in the reproduction chain—first positive, second positive, third internegative, with each stage representing a generational change. Every optical or photochemical duplication comes at a cost: contrast flattens, graininess increases, and color separations drift. Anyone who has projected a third or fourth positive knows the phenomenon—blacks turn gray, reds become dull, and fine gray gradations collapse into bands.
Practically on set and in post: With analog material, the generation chain had to be kept to a minimum. The DP planned for dupe negatives, internegatives, and duplication negatives—each of which resulted in a visible loss of quality. Color corrections on higher generations were hopeless because the latitude within the color space had already been narrowed. Therefore, work was done with matrices: the original camera negatives and high-contrast separations were retained to maintain control during the final internegative creation. Restorers know: the closer you get to the original, the more information can be retrieved—a fourth generation of a 35mm Kodachrome original is practically lost.
Digital has mitigated this generation problem. A DCP from a DCP is pixel-identical to the original; there is no degradation through physical duplication. However: this only applies if you work digitally and stay digital. Hybrid workflows—film to digital, grading, back to celluloid—can create new generational losses if the digitization color space was too narrow or the re-exposure was poorly calibrated.
For archiving and restoration, the concept of generations remains central. Scanner scans of camera originals are preferred over scans of already damaged positives. The reason: the original negative still contains all information, even if it is physically battered—scratches can be removed in a DI suite, but lost color information cannot. Therefore: the closer to generation 1 (the original camera negative), the better the chances for true restoration rather than mere cosmetic repair.