A film base is a transparent substrate which acts as a support medium for the photosensitive emulsion that lies atop it. Despite the numerous layers and coatings associated with the emulsion layer, the base generally accounts for the vast majority of the thickness of any given film stock. Historically there have been three major types of film base in use: nitrocellulose (cellulose nitrate), cellulose acetate, (cellulose triacetate, cellulose diacetate, cellulose acetate propionate, and cellulose acetate butyrate), and polyester (polyethylene terephthalate (PET) (Kodak trade-name: ESTAR)).
Read more about Film Base: Nitrate, Acetate, Polyester, Identifying A Film Base
Famous quotes containing the words film and/or base:
“His education lay like a film of white oil on the black lake of his barbarian consciousness. For this reason, the things he said were hardly interesting at all. Only what he was.”
—D.H. (David Herbert)
“Thou treacherous, base deserter of my flame,
False to my passion, fatal to my fame,
Through what mistaken magic dost thou prove
So true to lewdness, so untrue to love?”
—John Wilmot, Earl Of Rochester (1647–1680)