If there was anyone made to catch the intimacy of New York City’s Subway crowd, it is Stanley Kubrick:
“I wanted to retain the mood of the subway, so I used natural light,” he said. “People who ride the subway late at night are less inhibited than those who ride by day. Couples make love openly, drunks sleep on the floor and other unusual activities take place late at night.”
To make pictures in the off-guard manner he wanted to, Kubrick rode the subway for two weeks. Half of his riding was done between midnight and six a.m. Regardless of what he saw, he couldn’t shoot until the car stopped in a station because of the motion and vibration of the moving train. Often, just as he was ready to shoot, someone walked in front of the camera, or his subject left the train.
I think I have to do a modern-day version of this.