Ben Barnes has admitted he couldn't believe how Jeff Bridges remains so cool at all times, when he worked with him on Seventh Son.
The trailer has just been revealed for the action fantasy epic based on Joseph Delaney's young adult novels about a teen, the seventh son of a seventh son played by Ben, who is learning about wizardry from a forbidding spook, played by Jeff.
Ben revealed: "It's very exciting, it's Jeff Bridges, wonderful Jeff Bridges, playing a very grizzled old witch hunter and fighter of the dark side. And Julainne Moore is a vicious old witch and we're hunting her and her minions down
"And I play Jeff's apprentice, he's teaching me and guiding me through this world, rather begrudgingly and it's going to be great.
"Jeff is so cool! He's so relaxed when he's working, he doesn't allow the pressure to get to him. I don't know if he meditates or what he does, but he's so focused and cool and he's never rushed by anyone. He does his own wonderful thing in his own inimitable way and it's cool to be around it."
The trailer shows the pair battling an enormous dragon, fighting with swords and also reveals Anna Karenina star Alicia Vikander's character to be a potential love interest in the film.
The Seventh Son is due for release in cinemas in January 2014.