Winterbottom's 'difficult' scenes
Michael Winterbottom has admitted filming the violent scenes in his new movie was "difficult" for some of the stars.
The director's flick The Killer Inside Me has led to accusations, from some people who have seen the movie, of misogyny over violence against its female characters.
Michael said: "There were difficult days, the days of the violence, where I think Casey (Affleck) found it quite hard to find some way into being Lou Ford, something that he thought would be believable and true to how Lou Ford would be in those situations."
The film stars Casey as Lou, a psychotic deputy sheriff in 1950s Texas, Jessica Alba as Lou's lover Joyce Lakeland, and Kate Hudson as Lou's girlfriend Amy Stanton.
The movie, which premiered at the Sundance Film Festival, is based on the 1952 pulp novel of the same name by Jim Thompson.
The director said of Casey: "I think he's a great actor ... he has a great ability to be saying one thing, his surface is one thing - but you kind of feel there is something else going on inside."
He added: "Casey is quite a reluctant actor... He doesn't like the process, he doesn't like all that sort of stuff, he doesn't like travelling.
"When he came on set, the first day on set we were in New Mexico, and he'd driven from Los Angeles to New Mexico because he doesn't like flying. He arrived at like 4am before a 6am call".
The film is released in the UK on June 8.