Michel Sima was a Polish sculptor, photographer, ceramist and engraver, member of the New School of Paris. He frequented the circle of Gertrude Stein and her brother Leo, and made many friends: Jean Cocteau, Francis Picabia, Paul Éluard, Robert Desnos and his companion Youki Foujita, Max Ernst, Pierre Tal Coat. He met Pablo Picasso in 1936. He participated in several group exhibitions in Paris and on the Côte d'Azur. Under the pseudonym of Michel Sima, he practised the art of the artist's portrait. He created his own style, which reveals his deep attachment to his models. In the following years, he painted portraits of almost all the artists of the Paris School. After the war, on his return from the concentration camps and on the advice of Picasso, Sima turned to photography. His state of health no longer allowed him to be a full-fledged sculptor, although he continued to produce small pieces, engravings and to practice ceramics. He covered Picasso's work in a very personal way and documented it. A book resulted, published in 1948, Picasso à Antibes.