Text: In the 1960s and 1970s, the company altered the tint of its film to correspond to Japanese notions of skin tone (and I realize how weird that sounds), and also invented film that could be developed in normal light because so few Japanese photographers had darkrooms.
Entailment: The company made changes to it's film in the 1960s and 1970s.
Contradiction: The company did not care about the Japanese market for film sales.