BERLIN.- Lszl Moholy-Nagy (1895-1946) is one of the most important exponents of Modernism. Berlins Martin-Gropius-Bau has mounted an exhibition of his art as represented by over 200 works: paintings, photographs (black-and-white and colour), photograms, collages, films and graphics. The show will focus on the years in which Moholy-Nagy was developing his theory of art as an art of light. This covers the period from 1922 to the end of his life and beyond, in view of the influence he exerted after his death. For Moholy-Nagy was always a theoretician and practitioner in equal measure, always wanting to be a holistic artist. He approaches his work painting, photography, commercial and industrial design, film, sculpture, scenography from a wide variety of aspects and practises it as a radical, extreme experiment, by refusing to place his hugely differing works in any sort of aesthet