... photography was a profound transformation of the world it entered. Before, every face, every place, every event, had been unique, seen only once and then lost forever among the changes of age, light, time. The past existed only in memory and interpretation, and the world beyond one's own experience was mostly stories. The rich could commission paintings, the less rich could buy prints, but a photograph reproduced its subject with an immediacy and accuracy art made by hand lacked, and by the 1850s it offered the possibility of mass reproductions, images for everyone. Every photograph was a moment snatched from the river of time. Every photograph was a piece of evidence from the event itself, a material witness. The youthful face of a beloved could be looked at decades after age or death or separation had removed that face, could be possessed like an object. Daguerreotypes, which were soon sold in elaborately molded cases with cut-velvet linings facing the image that sat within, were alluring objects. Soon countless were lining up to possess images of themselves, their families, their dead children, to own the past.
Rebecca Solnit: Rivers of Shadows. Eadweard Muybridge and the technological Wild West