The 34-year-old Irish actor, who plays the lead role of Christian Grey in movie, said adapting a popular novel makes things tough, according to The Hollywood Reporter.
"Essentially I feel like all of that pressure when you're making the first of a franchise of (movies based on) books that mean so much to people that has so much attention on it can be quite paralyzing I think," Dornan said.
But the actor is enjoying the experience of working on the second installment.