Legendary director of photography Sven Nykvist, who famously worked with directors like Ingmar Bergman, Woody Allen, and Andrei Tarkovsky, has some interesting things to say in this rare interview from 1986, with BTS footage from the film Fanny and Alexander. The conversation ranges from his duties as the DP to how his work suffers with fatigue (thanks to Cinephilia & Beyond and Eyes On Cinema):
It's interesting that he mentions the working hours in the US. This is something we've talked about quite a bit here, that the United States tends to work insane hours compared to the rest of the world. While lots of productions in Europe try to stick to around 10 hours or less, shows in the States frequently go well beyond that. While Sven wasn't exactly a spring chicken during the BTS footage and the interview, the camera team rarely gets a break, so there is a lot of truth to what he's saying about fatigue.
Source: Eyes On Cinema