Saint Francis [far left panel]

Cosmè Tura was the founding genius of the Ferrarese school of painting, creating a visual language of extraordinary intensity and individuality that combined the linear rigour of Mantegna with bizarre, almost expressionistic distortions of form and space. This panel of Saint Francis from c. 1470–1480 belongs to a dismembered altarpiece of which several panels are known, suggesting an original multi-panel work of considerable ambition. Tura's Saint Francis — gaunt, intense, bearing the stigmata — is rendered with the harsh, crystalline clarity that characterises his manner: faces like carved flint, drapery like hammered metal, backgrounds of fantastic rock formations that suggest both geological reality and visionary hallucination. His influence on his immediate successors in Ferrara — Cossa, Roberti — shaped Italian Renaissance painting in one of its most distinctive regional variants.

Tura's characteristically hard, linear technique is fully in evidence — the figure is drawn with almost metallic precision, the forms built through crisp transitions from light to shadow rather than soft blending. The gold ground and tooled halo reflect Tura's synthesis of Byzantine formal authority with Renaissance spatial ambition.