How did Seurat break from Impressionist conventions? He used thin layers of transparent paint to create carefully blended tonal values. He portrayed casual scenes of carefree Parisians enjoying leisure activities. He made unstructured paintings directly from life, without any preparatory sketches. He applied discipline and order to the Impressionists' spontaneous use of color.
The method he used is also called the scientific approach, making him the first of his kind to try it during that era. He applied discipline and order to the spontaneous use of color by the impressionist.
