Hans Holbein the Younger (1479-1543) was a German/Swiss Painter and printmaker who worked in a Northern Renaissance style.
Holbein learned how to paint from his father, Hans Holbein the Elder. He produced religious art, satire, and Reformation propaganda but is best known for his portraits. Holbein is considered one of the finest portraitists of the Early Modern Period.
In the Hockney-Falcothesis, David Hockney speculated that Holbein used a concave mirror to project an image of the subject onto the drawing surface and then trace it.