Künl was trained in painting at the Vienna academy, but his art was subsequently shaped in relation to his artistically unambitious Slovenian clients. He was also a copyist and restorer. He executed commissions placed by the Church and took care of the art collection of Eduard von Strahl at Stara Loka (Altenlack). The quality of Künl’s works fluctuated and his style extended from the contemporary Biedermeier back to Baroque and 17th century Netherlandish painting. Particularly attractive in his vast oeuvre of religious paintings, genre scenes and portraits seem to be his cityscapes, which are, due to their topographical details, of particular documentary value.