This document discusses the emergence of representational painting techniques during the Renaissance. It describes how innovations like oil paint, codified rules of perspective, and direct study of human anatomy allowed artists to create more realistic representations. These new techniques, like thin layers of oil paint, helped artists capture fine details and create the illusion of three-dimensional space. Masters would take on apprentices to teach these specialized skills. The document also provides examples of frescoes painted by Raphael that demonstrate these techniques.