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Member Since: February 19, 2007

Country: United States

  • Modern film negatives can be made from polyester or cellulose acetate. I know polyester film stock is transparent to infra-red light but acetate might not be. You can detect polyester film stock by viewing it in between two polarising filters and it should have an iridescent effect. All the Ilford film I've ever used has been acetate-based.

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