Casey Affleck believes that Christian Bale makes his co-stars better actors.
Affleck teams up with Bale for new movie Out of the Furnace and has praised the positive effect that Bale has on a set; going on to calle him an 'anchor of reality'
Affleck and Bale play brothers in the new film that has been directed by Scott Cooper.
Speaking to Collider, Affleck said: "It's awkward to say because he's sitting right there, but I think he just makes everyone better around him and is an anchor of reality.
"If someone's in a scene with you and they're listening to what you say and they're looking at you in that way, then you're having a real conversation and there are real feelings and relationships.
"On the very first day or two, we were doing those scenes [in a prison] and Christian was very patient. I did and said some things that just immediately made me trust him and then it just went smoothly from there."
Out of the Furnace brings together an all star cast as Affleck and Bale are joined by Zoe Saldana, Sam Shepard and Woody Harrelson.
Affleck is currently filming science fiction film Interstellar, the latest movie from director Christopher Nolan.
Out of the Furnace is released 31st January 2014.
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