Colmar Altarpiece

Caspar Isenmann was the leading painter in Colmar in the mid-fifteenth century, and his major work — the Colmar Altarpiece of 1462–65, now dispersed across several panels — represents the most ambitious altarpiece commission in Alsace before Schongauer's arrival in Colmar. Isenmann's style synthesises the Flemish influence that reached Alsace through Cologne and Basel with a local Rhenish tradition, creating a distinctive regional manner. The altarpiece, made for the collegiate church of Saint Martin in Colmar, depicted the Life of Christ across multiple panels with careful narrative organisation and sophisticated spatial construction.

Isenmann employs an oil-tempera mixed technique, his figures modelled with the Flemish-derived attention to material surfaces and spatial depth. The surviving panels show strong narrative construction — figures interact with psychological conviction, and architectural settings are rendered with spatial ambition unusual in Alsatian painting of the 1460s. The palette is rich and warm, with the deep reds and blues of the Flemish-influenced South German tradition.