Grammatica officinalis

"Grammatica Officinalis circulates around immateriality - to photograph what is not really there. The book takes us on three journeys: first via so-called celestographs and conformal clouds, where the theory that there is only one set of clouds that regularly moves around the earth, is tested between Malmö and Paris. The second journey, Châteaux disparus, maps six vanished castles around Paris. And the third guides us through a foggy Malmö where each captured view has been selected by the principle of the polaroid technique (it takes three minutes between an image in color and one in black-and-white)."--Publisher's website.