Posts tagged with museum storage

Caring for our photographic negatives

  • Cellulose acetate film was used for negatives from the 1920s.  It tends to break down to acetic acid, causing the film to shrink.  This makes the binder layer form channels and spots, and the image becomes difficult to read.
  • Steve McStay and Paul Simpson sliding an empty drawer into the plan chest unit.
  • Steve McStay and Paul Simpson sliding an empty plan drawer into the unit.
  • An acetate negative with 'vinegar syndrome'

We have an enormous collection of photographic negatives and transparencies on glass and film, going back to the 1870s. They include all sorts of images from studio portraits to holiday snaps, landscapes, photographs of sports teams, and artists’ negatives and transparencies. Many negatives are chemically unstable and, if left in an uncontrolled environment, will deteriorate to… Read more »