safety base, triacetate
type: Concept
in scheme: Motion picture: base of film
definition: Cellulose triacetate film base.
scope note: Cellulose triacetate is a high acetal compound with very low flammability and slow burning characteristics. From 1951, triacetate has been used for professional as well as for amateur produced moving image film.
notation: t

mixed base (nitrate and safety)
type: Concept
in scheme: Motion picture: base of film
definition: Combination of nitrate base and safety base film.
scope note: The use of a mixed base was common in the early 1950s when nitrate base stock shots were spliced with safety base film for low-budget motion pictures. In such releases, up to 50% of the film consisted of stock shots on nitrate base film.
notation: m

Motion picture: base of film
type: ConceptScheme
type: Dataset
alternative: MARC21 007/12 values for motion pictures expressed using RDF
description: Base of the film.
disambiguating description: SKOS Concept Scheme for MARC 00X Values
publisher: http://viaf.org/viaf/139541794
source: bd007.html
source: marc21rdf.info
provenance: marc00Xvalues
creator: http://viaf.org/viaf/139541794
contributor: http://viaf.org/viaf/151962300
issued: 2024
contributor: Metadata Management Associates
language: en
license: http://creativecommons.org/publicdomain/zero/1.0
version: 1-0-0
format: RDF XML
has format: motion picture base of film.ttl
has format: motion picture base of film.nt
has format: motion picture base of film.jsonld
has format: motion picture base of film.html

unknown
type: Concept
in scheme: Motion picture: base of film
definition: Base of the film is not known.
notation: u

safety base, acetate undetermined
type: Concept
in scheme: Motion picture: base of film
definition: Acetate safety base film whose exact type cannot be determined, i.e., where it is unknown if the type is diacetate or triacetate.
notation: c

nitrate base
type: Concept
in scheme: Motion picture: base of film
definition: Cellulose nitrate film base.
scope note: Cellulose nitrate support or base was used in the manufacture of 35 mm. film (and some 17.5 mm. film) until 1951. Nitrate base film is no longer manufactured.
notation: i

safety base, undetermined
type: Concept
in scheme: Motion picture: base of film
definition: Safety base film whose type has not been identified.
notation: a

safety base, polyester
type: Concept
in scheme: Motion picture: base of film
definition: Film base made of a synthetic resin.
scope note: E.g., estar.
notation: p

other
type: Concept
in scheme: Motion picture: base of film
definition: Base of film other than safety base, undetermined, safety base, acetate undetermined, safety base, diacetate, nitrate base, mixed base (nitrate and safety), not applicable, safety base, polyester, safety base, mixed, safety base, or triacetate.
notation: z

safety base, mixed
type: Concept
in scheme: Motion picture: base of film
definition: Mixed safety base films spliced together; but contains no nitrate film.
notation: r

safety base, diacetate
type: Concept
in scheme: Motion picture: base of film
definition: Cellulose diacetate film base.
scope note: Introduced before World War I for home movies, diacetate base was more expensive and unpredictable than nitrate base and so failed to gain acceptance in professional 35 mm. film production.
notation: d

not applicable
type: Concept
in scheme: Motion picture: base of film
definition: Item does not have a film base.
scope note: E.g., paper film.
notation: n