Search results
Results from the WOW.Com Content Network
Cellulose acetate is also known as "safety" film and started to replace nitrate film in still photography in the 1920s. [1] There are several types of acetate that were produced after 1925, which include diacetate (c. 1923 – c. 1955), acetate propionate (1927 – c. 1949), acetate butyrate (1936–present), and triacetate (c. 1950 – present). [1]
A film splicer (also called a film joiner, usually in Europe) is a device which can be used to physically join lengths of photographic film. It is mostly used in film motion pictures. The units are made in various types depending on the usage: Single-8, Super 8 film, 16mm, 9,5 mm, 35mm and 70mm. Used in film editing to make a cut (transition ...
Film cement is a special glue designed to join motion picture film. It is made of film base dissolved in a solvent. Two cut sections of film are spliced together in a film splicer using film cement. [1] [2] [3] Splices can be made either with a "hot" splicer, or the splicer unplugged and at room temperature.
Acetate can also be spliced with film cement, while polyester can only be spliced with tape or an ultrasonic splicer, so polyester is hard to edit. Acetate film does not burn under intense heat, but rather melts, causing a bubbling burn-out effect — this can be seen simulated in films such as Persona (1966), Two-Lane Blacktop (1971) ,The ...
Cellulose diacetate film was first created by the German chemists Arthur Eichengrün and Theodore Becker, who patented it under the name Cellit, from a process they devised in 1901 for the direct acetylation of cellulose at a low temperature to prevent its degradation, which permitted the degree of acetylation to be controlled, thereby avoiding total conversion to its triacetate.
Acetate film stock is still used in some applications, such as camera negative for motion pictures. Since the 1980s, polyester film stock (sometimes referred to under Kodak's trade name "ESTAR Base") has become more commonplace, particularly for archival applications. Acetate film was also used as the base for magnetic tape, prior to the advent ...
Negative cutting [1] (also known as negative matching and negative conforming) is the process of cutting motion picture negative to match precisely the final edit as specified by the film editor. Original camera negative (OCN) is cut with scissors and joined using a film splicer and film cement.
Photographic emulsion is a light-sensitive colloid used in film-based photography. Most commonly, in silver-gelatin photography, it consists of silver halide crystals dispersed in gelatin. The emulsion is usually coated onto a substrate of glass, films (of cellulose nitrate, cellulose acetate or polyester), paper, or fabric.