Jacopo Carucci, called Pontormo after the Tuscan town from which he came, was one of the leaders of the Mannerist movement, but as Mannerism increasingly focused on masks and artificiality, there was little room for his keen sensitivity and profound feeling for human states of mind. This quality is unmistakable in the elegant *Portrait of a Halberdier,* which shows Pontormo introducing an insightf