"it is a mistake to associate photography, by reason of its technical origins, with the notion of a dark
passage (camera obscura). It is camera lucida we should say...for, from the eye's viewpoint,
'the essence of the image is to be altogether outside, without intimacy, and yet more inaccessible and
mysterious than the thought of the inner-most being; without signification, yet summoning up the
depth of any possible meaning; unrevealed yet manifest, having that absence-as-presence which
constitutes the lure and fascination of the Sirens'"
  Roland Barthes, Camera Lucida