Dunst praised director Sofia Coppola - her frequent collaborator from The Virgin Suicides and Marie Antoinette - for being sensitive during the revealing shoot.
"At least Sofia's like, 'We're going to get this done quick, I'm just gonna shoot it here, we'll do three takes, be done,' whereas male directors want to 'shoot it from every angle,'" Dunst said, New York Post reports.
Irish actor Farrell said sex scenes were "harder" for female actors and he was sensitive to it.
"It's harder for women. And women have in the history of cinema ... been more exploited of course, through the means of sexuality, by men than men have," Farrell said.
