Defining photography is impossible. Revealing it is another matter, and that's what The Concise Focal Encyclopedia of Photography does,with each turn of the page.History: The technical origins and evolution of photography are half of the story. The other half consists of the ways that cultural forces have transformed photography into a constellation of practices more diverse than any other mode of representation. Photographers can tell a more in-depth story through a photo like Dorothea Lange's "Migrant Mother? than a journalist ever could with the written word alone.Major