German painter (b. 1708, Reutte, d. 1783, Reutte) Austrian painter. Trained initially by his father, Paul Zeiller (1658-1738), he subsequently studied in Italy (1723-32) with Sebastiano Conca and at the Accademia di S Luca in Rome, and with Francesco Solimena in Naples, then at the Kaiserliche Akademie in Vienna. From 1733 to 1743 he was a regular collaborator on Paul Troger's frescoes, contributing mainly architectural frameworks painted in the style of the Bolognese quadraturisti. He retained such frameworks in his own paintings throughout his life, even in south Germany where this was generally unusual. Troger's influence on the style of Zeiller's figures and on his iconographic repertory was such that his first independent works in Austria