Beginning in the mid-nineteenth century, artists began to contradict the rigorous nature of art which was centered on technique and consumer pleasure. Pissarro was one of many artists who decided to resist these rules involved in art during the 1850s and thereafter. Born into a bourgeois family, he began studying art to make it a profession. He soon began to tire of bourgeois life and decided to counter it through anarchist ideals. Because of his exuberant personality, he began to challenge the socially acceptable art critics of the time and, in coalition with some other artists of the time, began a new art form. Some aspects that made art unique before the mid-19th century changed during the new movement. Although Monet is considered the most impactful Impressionist artist of the era, Camille Pissarro was the father of the Impressionist movement seen through his contribution to the definition of Impressionist art, becoming a mentor to other artists and being included in all eight exhibitions of the new artistic style. The change in characteristics that made the art unique in the mid-19th century gave rise to the new Impressionist movement led by Pissarro which gave only a general idea of ​​what the painting actually represented. The movement was seen as a contrast to the very rigorous, detailed and precise strokes of the art before this movement. The focus on technique was immense before Impressionism and since the revolutionary type of art seemed to discard all these ideas, it was seen as a radical movement. One of the most important factors of the art itself in this movement was the use of light. In impressionism, artists use lighting to draw the viewer's eye to the painting. It is also used to create atmosphere... center of the paper... work: St. Martin's Press, 1977. Bomford, David, Kirby, Jo, Leighton, John and Roy, Ashok. Art in the making: impressionism. London: National Gallery, 1990.Kunstler, Charles. Pissarro: Cities and Landscapes. New York: French and European Publications, Inc., 1967. Lacambre, Genevieve. Impressionist and post-impressionist masterpieces at the Musée d'Orsay. New York: Thames and Hudson in collaboration with the Éditions de la Réunion des Musées Nationaux, 1987. Rewald, John. The history of impressionism. New York: Museum of Modern Art, 1973.Sérullaz, Maurice. The concise encyclopedia of impressionism. Seacaucus: Chartwell Books, Inc., 1974. Shikes, Ralph E., Harper, Paula. Pissarro: his life and work. New York: Horizon Press, 1980.Thomson, Richard. Camille Pissarro: impressionism, landscape and rural work. New York: Amsterdam New Books, 1990.