On 28 Dec 2003 at 10:29, Tapani Tarvainen wrote: > On Sun, Dec 28, 2003 at 03:52:10AM +0100, Willem-Jan Markerink > ([EMAIL PROTECTED]) wrote: > Never found much more about this aspect > of the Canon RAW-format, > being tamperproof because it could only be > written by Canon software, > from the raw camera data, not by anything > else > > There already are Open Source programs that can read Canon RAW, > and a quick look at the source of dcraw it doesn't seem there's > any real reason it couldn't be modified to write RAW as well, > even though there are some fields of unknown significance in > the files. > > In principle it would be possible to create a raw format that'd > be very hard to forge, by including a cryptographically secure > "camera signature" in the file, but it doesn't look like Canon > has done that - at least they don't provide any software to > verify it, as far as I know.
Someone in nl.foto wrote that the 1Ds can be had with a socalled 'Data Verification' kit....it also seems the info at Canon can't be linked directly, being Flash-based, but here are some commercial links: http://www.videodirecteoscameras.com/canoneosotheraccessories.html http://www.bhphotovideo.com/product/266214/CADVKE1/REG/4969 Price is stiff though....8-)) -- Bye, Willem-Jan Markerink The desire to understand is sometimes far less intelligent than the inability to understand <[EMAIL PROTECTED]> [note: 'a-one' & 'en-el'!] * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
