Telecine's and film scanners these days fall into two camps, the CCD camp tend to use Xenon lamps, but some use HMI's some high power LED lights, the CRT camp tend to use some kind of detector like a photo-multiplier and so on. As was already pointed out the CCDs are tri-linear meaning no bayer type pattern and a 'true' full coverage sensor so when we say 4K we mean 4096*3 sensor sites not a fractional amount determined by the filter array (we also mean 6K when we say 6K :-).
there are lots of things that need 'negative' values (but not in absolute systems), the most obvious is allowing for out of gamut colours to pass through linear matrix systems when doing RGB type conversions. Kevin -- | Kevin Wheatley, Cinesite (Europe) Ltd | Nobody thinks this | | Senior Technology | My employer for certain | | And Network Systems Architect | Not even myself | ------------------------------------------------------- This SF.Net email is sponsored by Yahoo. Introducing Yahoo! Search Developer Network - Create apps using Yahoo! Search APIs Find out how you can build Yahoo! directly into your own Applications - visit http://developer.yahoo.net/?fr=offad-ysdn-ostg-q22005 _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user