13 Nature of materials

While I was working on the sets of a film, I noticed the nature of walls: how they reflected light, the way they age, their weight distribution, and so on. The nature of different materials means that they offer the artist a range of exciting possibilities. Only when you know how a material behaves under different conditions will you be able to portray it realistically. Observe the folds on a leather jacket and those on a cotton shirt, or the sharp highlights on a metal ball, versus those on a rubber ball.