Scratches, wear, and color fade on film prints from storage and repeated projection. Visible during digitization and require restoration work.
Every film print wears out. Scratches are caused by transport through projectors, dust settles in the emulsion, colors fade — these are print damages, and they are unavoidable. Anyone digitizing old footage or working on restoration encounters them daily. These damages are not merely aesthetically disruptive; they document a film's life story: how often it was shown, how poorly it was stored, how rough the handling conditions were.
On set or in the edit, you rarely encounter this problem — that's the domain of archives and restorers. But when you work with digitized archival material, you need to know what you're seeing. Scratches almost always run vertically (transport damage) or horizontally (wear on the guide rails). Color shifts occur because individual layers of the emulsion (red, green, blue) age at different rates — a disaster, especially with older color films. Perforation damage compromises mechanical stability: if the perforation tears, the print is often irrecoverably lost. Vinegar Syndrome — the classic with acetate film — leads to warping, discoloration, and chemical decay. The smell of vinegar is the first indicator.
Digitization makes these damages visible — sometimes only in the DCP or during a 4K scan. Digital restoration then works with frame-by-frame cleaning, but completely removing genuine scratches without losing information is technically demanding. Automatic tools are often too aggressive and destroy fine details. Professional scans work in multiple layers: maximizing optical quality, then digitally removing only the unavoidable flaws. Sometimes, it's even aesthetically desirable to retain slight scratches — they give vintage material authenticity, and too much smoothing looks unnatural and expensive.
For your daily work: When color grading digitized archival material, first check the raw scans for systematic color loss (weakened red channel?) instead of treating local errors. When creating a DCP: Print damages affect compression — poorly restored material generates artifacts in the codec. And if you work with internegative or print film yourself, store it correctly: cool, dry, in acid-free boxes. Every print created today is archival material tomorrow.