Actor Colin Farrell says he adopted a business-like approach while shooting sex scenes with actress Nicole Kidman in "The Killing of a Sacred Deer".

"I think from the minute (Colin and I) met, I just felt safe, which is always a great place to be with another actor," etonline.com quoted Kidman as saying.

Farrell agreed, and stressed that at the end of the day, it's all just a part of the job.

"You get through (those scenes) as quickly as you can, while not rushing it at the same time. It's very much business," Farrell said.

"You're there to tell a story. You're there to honour the characters that have been written by somebody else and whose voice you are now beginning to adapt to yourself. You hear, 'Cut,' and everyone looks away, and you make sure that the person you're working with has cover," he added.

Kidman, who plays Farrell's wife in the film, added that those particular scenes are often essential to telling a good story.