On Mon, 23 May 2005, James Burgess wrote:

Hmmm, do you know for sure that's why they recommend it as a whitepoint? Seems odd to tie your viewing whitepoint to the details of the input side (especially since that means negative in motion picture). Wouldn't you want it to be based on something like the viewing conditions in a theatre?

Nope, pure speculation on my part. I agree that theater viewing conditions are also important and 5400K is not much different than the 5300K and 5200K recommended for cinema viewing in the US and Europe respectively. It seems that Germany prefers 5500K.

Also most scanners I can think of use silicon detectors which I would think would have a very wavelength dependent response (blue would be very much lower)?

Do telecines/datacines use a similar detection mechanism? My understanding is that these usually sweep a CRT beam accross the film to be scanned so that data is captured sequentially. This differs from a typical "scanner" in which a CCD captures an entire line or even the entire image at once.

Bob
======================================
Bob Friesenhahn
[EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/


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