Assumption of the Virgin (1526-30) by Correggio
Fresco, 1093x1195 cm. Duomo, Parma.
This fresco (a painting in plaster with water-soluble pigments) anticipates the Baroque style of dramatically illusionistic ceiling painting. The entire architectural surface is treated as a single pictorial unit of vast proportions, equating the dome of the church with the vault of heaven. The realistic way the figures in the clouds seem to protrude into the spectators’ space is an audacious and astounding use for the time of foreshortening.
(via Web Gallery of Art, image collection, virtual museum, searchable database of European fine arts (1000-1850))