The treatment of this subject by Ingres is indicative of Leonardo's iconic status and also specifically that he was of particular significance to the school of French Classicism. A number of his paintings had passed into the Royal collection and certain elements of them were much imitated. Leonardo's manner of soft shading known as sfumato was particularly adapted by Ingres, Jacques-Louis David and their followers. An influential painting was "Leda and the swan", now regarded as by a pupil of Leonardo but then generally accepted as the master's work.