A photograph can be viewed on several
levels. To begin with, it is a physical
object, a print. On this print is an
image, an illusion of a window on to the
world. It is on this level that we usually
read a picture and discover its content:
a souvenir of an exotic land, the face of
a lover, a wet rock, a landscape at night.
Embedded in this level is another that
contains signals to our mind's perceptual
apparatus. It gives 'spin' to what the
image depicts and how it is organized.




Image Credit:

Dieter Appelt
The Mark on the Mirror
That Breathing Makes
1977