Franz Roh, Jan Tschichold. L. Moholy-Nagy, 60 Fotos. Berlin: Klinkhardt und Biermann, 1930
“Moholy has been productive in all branches of photography, whereas the majority of modern photographers confine to a single one. Hitherto his endeavour was to gather and master all possibilities of photography. Moholy has been concerned with the reality-photo which primarly aims at nothing but holding fast a bit of immediate reality. Yet he has drawn new objects into this sphere of fixation, and this is a progress, for in the jog-tro of man's sensible life the selection of objects he enjoys offers but a conventional and limited number of things. The old, Moholy has seen in a new way: by bolder plasticity, new shades of light and dark, a different distribution in the degrees of distinctness, and above all by a change of perspective. We usually focus sections of reality in a horizontal view-line. The daring sight from above and from below by sudden change of level which new technical achievementshave brought about (lift, airplane) had not been made use of very much in pictures. Moholy was one of the first to take delight in these ups and downs. The slanting pictures of a vertical line thus offered (of a house, mast or chimney) are significant, for in a way the open astronomic perspectives: vertical in this broader sense is radial position corresponding to an imaginery centre of the earth.”
Franz Roh. "Moholy-Nagy and New Photography" In: L. Moholy-Nagy, 60 Fotos. Berlin: Klinkhardt und Biermann, 1930 (p. 7)