A-PEN (Annealed-Polyethylene Naphthalate)
Techniques Glossary A-PEN (Annealed-Polyethylene Naphthalate) ...
A-PEN Annealed polyethylene naphthalate-a polyester material used as the base on Advanced Photo System film; thinner, stronger and flatter than the acetate base traditionally used in consumer photographic roll films.
 See also: Format, Acetate base, Base, Camera, Speed
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