 Ingres ' portrait of Bertin was a critical and popular success , but the sitter was a private person . Although his family worried about caricature and disapproved , it became widely known and sealed the artist 's reputation . It was praised at the Paris Salon of 1833 , and has been influential to both academic painters such as Léon <unk> and later <unk> including Pablo Picasso and Félix <unk> . Today art critics regard it as Ingres ' finest male portrait . It has been on permanent display at the Musée du Louvre since 1897 . 
