In 1978 Henri Cartier-Bresson reminded us that Photography has not changed since its origin except in its technical aspects, which for me are not a major concern. (Zakia, 2000, p. xv) This statement, by one of the great artists in photography, is worth pondering particularly with the increasingly sophisticated imaging technology now available. Regardless of the medium used, how high tech it might be, and with what speed images can be captured, manipulated, and transported, it is the human factor that is most important. Pictures, regardless of how they are created and re-created, are intended to be looked at. This brings to the forefront not the technology of imaging, which of course is important, but rather what we might call the “eyenology” (knowledge of the visual process—seeing). What is known about vision and the visual process is overwhelming; what is directly applicable to pictures is not, and this is some of what will be covered in this section.