Patronage from the church diminished and private patronage from the public became more capable of providing a livelihood for artists. Three art movements which contributed to the development of abstract art were Romanticism, Impressionism and Expressionism. Artistic independence for artists was advanced during the 19th century. An "objective interest in what is seen", can be discerned from the paintings of John Constable, J M W Turner, Camille Corot and from them to the Impressionists who continued the "plein air" painting of the Barbizon school.