French painters who prepared the way for Impressionism include the Romantic colourist Eugène Delacroix, the leader of the realists Gustave Courbet, and painters of the Barbizon school such as Théodore Rousseau. The Impressionists learned much from the work of Jean-Baptiste-Camille Corot and Eugène Boudin, who painted from nature in a style that was similar to Impressionism, and who befriended and advised the younger artists.
