 This was the first major Hollywood film to be shot in Panavision.  The Panavision process faced its first major test when  Audrey Hepburn (qv) expressed worries that the widescreen process  would distort her already square face. Test footage made in  Panavision revealed this not to be the case, and reportedly received  applause when it was shown for Hepburn and others in a test  screening.