On a windy day at a Belgian beach, a film crew sets up mirrors in the sand. Some lie flat, reflecting a blue sky and scattered clouds, while others sway on hooks between ocean and salt grass. In this early scene of Agnès Varda’s auto-portrait, The Beaches of Agnès (2008), the filmmaker lands in the blue-green strata of shore, sky, and the North Sea, where she spent summers as a child. “If we opened people up, we’d find landscapes,” she says.