French exhibition celebrates 'king of the sky' Boudin A key forerunner of the Impressionist movement and a mentor to Monet, Eugène Boudin was one of the greatest landscape painters France has ever known, christened the "king of the sky" for his mastery of outdoor light. Now, a Paris museum has collected some of his best-known works for the city's first major Boudin exhibition. A natural-sound version of an AFPTV report