Work at that resolution was unforgiving. 4K made lies show themselves. He had to decide what to conceal and what to lay bare. He rendered a test frame and watched the woman—no longer an actress in a loop but a person reconstituted by light—open her eyes. They were hazel, flecked with something tired and brave. She blinked at nothing, then at the camera, and for a second, her gaze searched as if testing the boundary between the viewer and herself.