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A nice little collection of essays by Madame Sontag about photography, many aspects of which are studied here : the influence it got on the modern art scene - or even the journalistic one ; how, as spectators, it influenced the way we look at the world, our education, our sensibilities, how it relates to what is real...in a surreal way, its position vs other art techniques. The "act" of taking a picture is also analyzed, the potential reasons why people take pictures (the theory that photographs are predators made me smile), and so on...
The book was written during the 70's...that would be the only negative point of it...the digital age has somehow changed the way photography can be reproduced, altered, edited...which is something that is not discussed in the book (and make some of its theories outdated) but this is the only negative aspect of a very good book.