| abstract |
A base film for a photographic film, wherein (A) the base film is formed of a polyethylene-2,6-naphthalenedicarboxylate copolymer formed from 2,6-naphthalenedicarboxylic acid as a main acid component and ethylene glycol as a main glycol component; (B) a solution of 10 mg/ml of said copolymer in a hexafluoroisopropanol/chloroform mixed solvent having a hexafluoroisopropanol/chloroform weight ratio of 2/3 shows a light transmittance, T400, of at least 97%/cm at a wavelength of 400 nm; (C) the film has a yellow index, YID, of 5 or less; and (D) the film has a haze value of 2.0% or less. |