If you were founding a collection of European art today, which Renaissance painter would you start with? Probably not Sebastiano del Piombo (c.1485-1547), although his Raising of Lazarus (c.1517-19) bears the inventory number NG1 in our national collection. Sebastiano’s star has faded since the National Gallery’s foundation in 1824, but his credentials are now being burnished in a joint exhibition with an artist whose fame has never dimmed: Michelangelo Buonarotti (1475-1564).