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It helps so much being on location. It's like the difference between performing for the rectangle of the camera versus a world being created and then the camera finds things within that. There's a huge difference in that, because what it takes away is performance. You don't feel like performing. You're just kind of doing it. You're existing.

"Christian Bale, Casey Affleck, Woody Harrelson, Zoe Saldana, and Director Scott Cooper Talk OUT OF THE FURNACE, Filming Entirely On Location, and More". Interview with Sheila Roberts, collider.com. December 2, 2013.
It helps so much being on location. It's like the difference between performing for the rectangle of the camera versus a world being created and then the camera finds things within that. There's a huge difference in