Tim, Thanks for the link. http://www.imx.nl/photo/Film/page169/page169.html An interesting article that confirms what most here already knew, but it's nice to have an authorative confirmation, I look forward to reading Erwin's future articles on the subject. As an aside there was an article on the BBC's website recently http://news.bbc.co.uk/1/hi/programmes/click_online/8711747.stm that implies that the life of a CD as a storage medium is currently no better than 3 years, which I thought compared rather poorly with the small piece of film needed to hold the same information. Regards Dave