Artist Introduction: Russian painter, sculptor, designer and photographer. He was a central exponent of Russian Constructivism, owing much to the pre-Revolutionary work of Malevich and Tatlin, and he was closely involved in the cultural debates and experiments that followed the Revolution of 1917. In 1921 he denounced, on ideological grounds, easel painting and fine art, and he became an exponent of Productivism (see CONSTRUCTIVISM,