“Technically, traditional photography is a medium of memory, from the moment it is taken via processing to the final photograph. It always shows something which was present but is already past. It captures for the observer, among other things, fleeting eventful experiences in the form of a reproduction on a two-dimensional surface. The observer remains outside the scene and as such can only revive it through his imagination. Vice versa, since becoming mobile and liberating themselves from being hung on walls as illustrations and prints, images have become a possibility of observing something distanced in space and time, of being, of traveling somewhere else, without moving from where one is.”
Quote from Re:Photography written by Florian Rötzer.