"David Hockney" pencil

I have been reading a book by the painter and art historian David Hockney. In this book, titled "Secret Knowledge" Hockney proposes that certain Old Masters used optics (such as mirrors and lenses) to aid in creating many of there precise drawings and paintings. One artist he argues of using this is Jean August Ingers. Hockney Takes many of Ingers drawings and shows how the use of a type of Camera Obscura was most likely used to create his portraits. His theory is very convincing.

For this drawing, as Hockney would say, I eyeballed it. That is to say I sketched out observation with out the aid of any outside aides.