"... the arrival of digital technology and the migration of photographic production to its ranks, introduced transformations so drastic that it became necessary to rethink all this theory in the light of this unexpected metamorphosis. José Pablo Concha Lagos addresses this task. He does this by discussing with some of the authors who have contributed the most significant concepts to the construction of that theory. From a philosophical perspective, he removes the assumptions rooted in the heart of such concepts and puts them to the test, both within his own discursive logic and in relation to his systems of references and the paths adopted by digital photography today. The obstinacy of Concha Lagos for rethinking photography from its material, cultural, aesthetic and philosophical properties is stimulating even if, in order to do so, it is ready to deny its own object of study. And undoubtedly, he behaves in an attitude that is not insignificant for an author who considers himself a photographer, and who in his analytical horizon encounters the recurring need to apprehend and characterize the (im) possibility of a photograph ... "