How to preserve Super 8 and 16mm film: vinegar syndrome
To preserve film, keep it on its reel or in its can, in a cool, dry and stable place (never in attics, garages or damp basements), away from light and sun. If you smell vinegar when you open the can, the film may have vinegar syndrome, a breakdown of the acetate base that cannot be reversed: it is best to digitize it as soon as possible.
1. Why film degrades
Film is a photochemical medium: an emulsion carrying the colours on a plastic base. Over the years three things can go wrong:
- •The emulsion: colours fade, often towards reddish tones.
- •The base: acetate-base film can shrink and become brittle.
- •The splices: adhesive tape joins dry out and come apart.
Heat, humidity and sudden temperature changes speed up all of these processes.
2. How to store it
- •Temperature and humidity: a cool, dry and stable place; as a guide, a relative humidity between 30% and 50%. Avoid attics, garages, storerooms and damp basements.
- •Away from light and sun: keep reels in their boxes or cans.
- •Boxes that breathe: avoid sealing them airtight with film in poor condition, because the gases from decay speed up the process.
- •Handling: touch the film only by the edges, with clean, dry hands.
- •Don't project it more than necessary: every run wears the film and can break weak splices.
3. Vinegar syndrome: how to recognize it
Vinegar syndrome is the breakdown of acetate-base film. Some signs:
- •A smell of vinegar when you open the can or box.
- •Warped, wavy or shrunken film that won't lie flat.
- •Brittle film that snaps when handled.
- •Bubbles or liquid on the surface.
It is a process that cannot be reversed and that can spread to other films stored together. If you suspect a film is affected, separate it from the rest and contact us for a free assessment.
4. When to digitize
The sooner the better: degradation advances over time and cannot be undone. A digital copy preserves the images even if the film keeps deteriorating.
At Videoconversion Digital Lab we digitize Super 8, 8mm, 9.5mm, 16mm and 35mm with frame-by-frame scanning, up to true 4K. Film with early-stage vinegar syndrome can be digitized with special precautions; in advanced stages recovery may be partial.
- •The 3-2-1 rule: three copies of the digital file, on two different media, one of them away from home.
- •Originals: keep the films, even after digitizing them, if you can.
Frequently asked questions
What is vinegar syndrome?
It is the chemical breakdown of acetate-base film. It is recognized by a smell of vinegar, and the film warps and becomes brittle. It cannot be reversed.
Where should I store my Super 8 films?
On their reel or in their can, in a cool, dry and stable place, away from light. Avoid attics, garages and damp basements.
Can film with vinegar syndrome be digitized?
We assess each case individually. In an early stage it can be digitized with special precautions; in advanced stages recovery may be partial.
How long does Super 8 film last?
It depends on the base and how it has been stored. Well kept, it can last decades, but degradation never stops, which is why digitizing is advisable.
Do you have film reels you want to save?
Check the film rates or write to us on WhatsApp and we will advise you based on the format and condition of your films.