Fifty Shades of Grey Dakota Johnson as Anastasia Steele and Jamie Dornan as Christian Grey in the film version of "Fifty Shades" Photo: Universal

Adapting an erotica book for the big screen may seem like a tricky task for filmmakers. But fortunately for “Fifty Shades of Grey” producers (rumored to be aiming for an R-rating), the film is now being described as both “tasteful” and "artistic" ahead of its first trailer release. 

“I knew right away it would be tasteful and artistic,” Eloise Mumford, who plays lead Anastasia Steele’s best friend, Kate Kavanagh, told E! News Tuesday. “In the end, the story is really a romance and a love story so it's about that more than anything.”

Mumford said that director Sam Taylor-Johnson, of “Nowhere Boy" fame, is to thank for keeping the film’s integrity intact. “She’s such a great director,” said the 27-year-old actress who also praised cinematographer Seamus McGarvey for the look and feel of "Fifty Shades." "He did 'Anna Karenina,'" she said. "It's going to be beautiful."

While Mumford didn’t give any hints about what filmgoers can expect when E.L. James’ best-selling book comes to theaters in February (the cast has reportedly been “sworn to secrecy"), she did rave about the film’s two leading stars. Mumford said that 24-year-old Dakota Johnson who will play the virginal Ms. Steele to 32-year-old Jamie Dornan’s BDSM-practicing Christian Grey are “the perfect pair to play Ana and Christian.”

Eloise Mumford Actress Eloise Mumford at the panel for "Lone Star" during the Fox summer Television Critics Association press tour in Beverly Hills, California, Aug. 2, 2010. Mumford stars in the highly anticipated "Fifty Shades of Grey" film adaptation. Photo: Reuters

Mumford’s comments follow rumors that the film’s first official trailer will debut this fall. According to speculative reports, the trailer’s release may have been delayed due to the National Association of Theatre Owners new guidelines, implemented in January 2014, which states that a film can't release its trailer more than five months before its theatrical debut.

In an effort to curb fans' curiosity, Universal Pictures released the first official head-on image of Dornan as Christian Grey on the fictional character’s 31st birthday, June 18. “Happy Birthday Christian Grey #FiftyShades,” the film’s social media network shared alongside an image of Grey behind the wheel of a car. The posting already has more than 56,000 Facebook “likes.”

Universal Pictures first unveiled footage of “Fifty Shades” at CinemaCon in Las Vegas in March. Those in attendance said the 2-minute extended trailer was “Twilight-esque” and featured some of the book series’ most memorable one-liners. 

“Fifty Shades of Grey” is scheduled for a Feb. 13, 2015 U.S. release.