how film restoration works - film polyester
How movies deteriorate, and the choice between digital film production may be one of the personal preferences, and we can be sure that over time, film film has a higher risk of damage or destruction than video film.
With the aging of plastic and emulsion and exposure to elements such as light and temperature, the color fades and the image is destroyed.
The culprit is often something called nitrate deterioration.
Until the 1950 s, most American films were filmed on cellulose nitrate film.
When the nitrate changes Mass, the film often shrinks and begins to release the various acids that separate the emulsion from the alkali, and the yellow individual still photographs, making the film so fragile that it eventually crashes and turns into dust.
High temperature and humidity can speed up the process.
Although subsequent versions of acetate film will also rot, modern polyester film is considered to have a shelf life of hundreds of years [1 [
Source: Kodak Library of Congress.
Because many of these films have been restored and transferred to digital formats, there is not necessarily a risk that Hollywood classics will be destroyed.
Instead, it is little known for its independence and avant-garde
Garde's work, as well as old news films, documentaries and silent time films scattered all over the country over the years.
Experts say these "orphan films" are important outside of the scope of previous restoration and preservation projects, as they provide insight into shooting and recording [the Life]
Source: National Film Protection Foundation.