Not about photography but interesting how scan of painting revealed a lot of unknown stuff about it.
If you're not in the UK you will probably need to use an UK based http proxy to watch this.
http://www.bbc.co.uk/iplayer/episode/b06ryn6l/secrets-of-the-mona-lisa
If you're not in the UK you will probably need to use an UK based http proxy to watch this.
http://www.bbc.co.uk/iplayer/episode/b06ryn6l/secrets-of-the-mona-lisa