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[filmscanners] RE: Newish Digital Tech
Nikon film scanners use one broadband linear CCD and three colors of
illumination. I believe the light sources are LEDs, and since LEDs have
fairly narrow spectral bands (narrower than the typical filters over
tri-colored CCDs), they have more metamerism (although this can be solved
with proper profiles).
--
Ciao, Paul D. DeRocco
Paul mailto:pderocco@ix.netcom.com
> From: Robert Meier
>
> Scanners often use either three rows of CCDs each sensitive to a different
> color or three different light sources. Therefore you will get the full
> color information for each pixel. While a few digital (video) cameras also
> use a three CCD approach most of them use just one CCD with a
> color pattern.
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