Dakota Johnson still doubts her portrayal of Anastasia Steel even with "Fifty Shades of Grey" releasing on Valentine's Day . Meanwhile, the model said filming the sex scenes with Jamie Dornan was more technical than erotic, according to the news from UK's Telegraph https://www.telegraph.co.uk/culture/film/starsandstories/11395314/Fifty-Shades-Dakota-Johnson-on-sex-scenes-and-her-famous-parents.html.

When the publication asked her if she has doubts over playing the sexy role, she replied: "Yes. Of course. Absolutely. The whole time. Even now there are moments when I think, 'What the f- have I done?' But most of the time I feel pretty solid about it."

"Fifty Shades of Grey" is the film that could make or break Dakota Johnson, who is used to the relative anonymity of being a model even if she's the daughter of famous parents, Don Johnson and Melanie Griffith.

Dakota Johnson told the publication that one of her greatest fears is to lose that anonymity, particularly with all the hype on the news that the "Fifty Shades of Grey is getting.

While the 25-year-old has no problems with nudity or the sex scenes in the movie, she recounted that filming them was quite tricky, and so she never felt comfortable.

"I definitely did trust Sam completely: she created a very safe, protected environment," she said, referring to director Sam Taylor-Johnson. "The set was very closed. It's not like there were hundreds of people around."

However, even if she's filming with a hot co-star in Jamie Dornan, the whole sex scenes were very technical.

"Sam and I would watch playback and really figure out: 'Do we need to put a camera here? Should I take a breath at this moment?'" she said. "It was really important to us to convey the underlying intense emotion throughout all of these sex scenes."

In previous "Fifty Shades of Grey" news, it was revealed that 20 minutes of over 100 minutes of running time for the movie are sex scenes, which makes the film one of the raunchiest of the last decade.