The primary focus of the painters of the Early Renaissance was the imitation of nature and the creation of a believable three-dimensional reality on flat surface of a painting. The Early Renaissance in visual art encompasses the first half of the 15th century, and in Italy, Florentine artists took leadership in the development of a new style of painting focusing on illusion.
Perugian, Florentine, & Roman periods – Roman most famous
"The young painter from Urbino thus adopted the artistic innovations of his elder colleagues, in particular those of Leonardo and Michelangelo, and synthesized them with his own aims." - Toman
Raphael Portrait of Julius II 1511-12 Oil on wood, 108 x 80,7 cm National Gallery, London … a portrait "so animated and true to life that it was frightening to behold, as though it were actually alive" (Vasari).
The School of Athens 1510-11 Fresco Vatican, Stanza della Segnatura