Cannes Turns 60

The people who run the world's most glamorous convention have a funny way of marking its 60th birthday. The huge lobbies of Festival Palace, its main meeting venue, are usually bedecked with gigantic photos of its great and good. But they are bare this year, as if hitting 60 were something to hide, not trumpet. It's either a false modesty or a decorative oversight, for Cannes has not forgotten how to promote itself. The celebrity quotient is high—Leo and Matt, George Clooney and Brangelina—and this Riviera redoubt is also crawling with esteemed auteurs, including a couple dozen top-prize winners of Palmes...