Candles
The legendary director, ever the taskmaster, berated the gaffer, the grip, and the unfortunate production assistant who just happened to be nearby.
"There's still light leaking in. Should I send everyone to lunch while you learn how to hang a curtain?"
They'd been on set for more than three weeks, yet hadn't finished a single take.
Eventually, the cinematographer felt the mad genius had been indulged long enough.
"Listen Stanley, shooting all your interiors with natural light may have worked on Barry Lyndon, but how do you imagine we're going to illuminate this entire bloody hotel with nothing but candles?"