A distinctive type of painting, combining elements of the portrait, history, and genre painting was the tronie. This was usually a half-length of a single figure which concentrated on capturing an unusual mood or expression. The actual identity of the model was not supposed to be important, but they might represent a historical figure and be in exotic or historic costume. Jan Lievens and Rembrandt, many of whose self-portraits are also tronies (especially his etched ones), were among those who developed the genre.