Transition from the Romanesque and Byzantine or "Greek Manner" to the Late Gothic and Renaissance Styles in Painting

Virgin and Child, 
from the Auvrgne region, France. c1150-1200
Oak with polychromy, height 31", 
Metropolitan Museum of Art
French Romanesque
Greek Classic, Pheidias
Pediment of the Parthenon
Three Goddesses c438BCE

Detail of Pulpit from Pisa's Baptistry c1259
Italian Gothic,

Mary as the "Throne of Wisdom"

Also see the images from Chartres

Cimabue, Virgin and Child Enthroned, 
from the Church of Santa Trinita, Florence
c 1310. Tempera and gold on wood, 12' 7"x7'4"
Galleria degli Uffizi, Florence

Giotto di Bondone, Virgin and Child Enthroned, 
(Ognissanti Altar,) c 1310. 
Tempera and gold on wood, 10'8"x6'8"
Galleria degli Uffizi, Florence

Cimabue, Crucifix, 1268-71 Tempera on wood, 
64,5 x 53 cm, San Domenico, Arezzo
Gothic and Late Gothic Paintings Altar or panel paintings (600's-1300's)
Guild and Apprentice System

How Paintings were commissioned and bought.