-SHADING-

Ziolkowski, Gregor. THE STOVE. 1975. Photograph. PENCIL OR INDIA-INK DRAWINGS ON PAPER. Http://www.ziolkowskigregor.de. Web. <http://www.ziolkowskigregor.de/Gallery%20Drawing.html>.

Shading is the technique of adding contrast to an image in a way that creates depth.