Raphael
Raphael was enormously productive, running an unusually large workshop and, despite his death at 37, leaving a large body of work. Many of his works are found in the Vatican Palace, where the frescoed Raphael Rooms were the central, and the largest, work of his career. The best known work is "The School of Athens" in the Vatican Stanza della Segnatura. After his early years in Rome much of his work was executed by his workshop from his drawings, with considerable loss of quality. He was extremely influential in his lifetime, though outside Rome his work was mostly known from his collaborative printmaking.
Sprezzatura
Raphael as an artist exemplified "sprezzatura" from the beginning of his career, starting with his first signed work "The Marriage of the Virgin". "Inspired by his teacher Perugino's rendering of the same subject, Raphael's painting can be found to differ primarily from its model by its unique awareness of the importance of "sprezzatura"."