GUIDO DA SIENA
(active in the second half of 13th century in Siena)

Altarpiece (detail)

1270s
Tempera on wood
Pinacoteca Nazionale, Siena

The left panel of the altarpiece depicts the Transfiguration. The feast of the Transfiguration (6 August) was not celebrated by the medieval Latin church and is therefore not often shown in early Italian painting. This panel is one of the two rare examples, the other being the very damaged thirteenth-century fresco on the east wall of the north transept in the Upper Church of San Francesco, Assisi.