Sistine Chapel ceiling how the work progressed. It was customary for fresco painters to use a full-sized detailed drawing, a "cartoon", to transfer a design onto a plaster surface—many frescoes show little holes made with a stiletto, outlining the figures. Here Michelangelo broke with convention; once confident the "intonaco" had been well applied, he drew directly onto the ceiling. His energetic sweeping outlines can be seen scraped into some of the surfaces, while on others a grid is evident, indicating that he enlarged directly onto the ceiling from a small drawing. Michelangelo painted onto the damp plaster using a wash technique to apply
Illusionistic ceiling painting Sant'Ignazio, Rome. Illusionistic ceiling painting belongs to the general class of illusionism in art—art designed to create accurate representations of reality. Di sotto in sù (or "sotto in su"), which means "seen from below" or "from below, upward" in Italian, developed in late Quattrocento Italian Renaissance painting, notably in Andrea Mantegna's Camera degli Sposi in Mantua and in frescoes by Melozzo da Forlì. Italian terminology for this technique reflects the latter artist's influence and is called "prospettiva melozziana", or "Melozzo's perspective". Another notable use is by Antonio da Correggio in the Duomo of Parma, which foreshadows Baroque grandeur. The technique