So I was reading the American Cinematographer article on Damien Chazelle's Babylon, lensed by Linus Sandgren, and I came across his strategy for push-processing the film stock:
When I shoot film stills in my camera, if I have a 200 ASA rated film, and I want to push it by +1 stop, I change the light meter to read at 400 ASA and then tell the lab to push +1 stop.
So why is he rating the film -1 stop lower if he's pushing it? Is he simply overexposing it? It might be really obvious but I'd love to know!