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Film base: Difference between revisions
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The base side of a print will look shinier and the emulsion side will appear more matte.Using a flashlight, move the film back and forth and observe how the light reflects off the surface. On the emulsion side you can often see the raised edges within the frame where the emulsion is thickest. It is easier to tell which side is which with certain prints more than others. Black and white prints are often the easiest, very worn prints or newer color prints can be difficult. | The base side of a print will look shinier and the emulsion side will appear more matte.Using a flashlight, move the film back and forth and observe how the light reflects off the surface. On the emulsion side you can often see the raised edges within the frame where the emulsion is thickest. It is easier to tell which side is which with certain prints more than others. Black and white prints are often the easiest, very worn prints or newer color prints can be difficult. | ||
===Why is it important to know what | ===Why is it important to know what type of base a print has?=== | ||
* '''For Projection:''' Only venues who are properly equipped to project nitrate film should do so. Many projectors require gate tension adjustments between prints that are polyester and acetate the latter is slightly thicker. This difference in thickness also means adjustments in focus must be made if acetate and polyester films are spliced together in a single reel (such as a trailer reel). | * '''For Projection:''' Only venues who are properly equipped to project nitrate film should do so. Many projectors require gate tension adjustments between prints that are polyester and acetate the latter is slightly thicker. This difference in thickness also means adjustments in focus must be made if acetate and polyester films are spliced together in a single reel (such as a trailer reel). | ||
* '''For Storage:'''Nitrate and acetate films have very specific needs with regard to long term storage. Improper storage can lead to deterioration of the film base. | * '''For Storage:'''Nitrate and acetate films have very specific needs with regard to long term storage. Improper storage can lead to deterioration of the film base. | ||
* Acetate tends to become more brittle with age and may require gentler handling | * Acetate tends to become more brittle with age and may require gentler handling | ||
* Knowing the type of film base can help you determine when the print was manufactured. | * Knowing the type of film base can help you determine when the print was manufactured. | ||
==Types of Film Bases== | ==Types of Film Bases== | ||