[filmscanners] RE: how to scan 'red' 'green' or 'blue' lights?

["michael shaffer" <michael@shaffer.net>]

Paul D. DeRocco writes ...

> > From: Dieder Bylsma
> >
> > I've noticed something over the past while when scanning pictures
> > that have 'stop' lights or green 'go' lights in them. The result from
> > scanning usually ends up in an strange 'hot' red, green, or blue
> > result that looks a bit bizarre.
> >
> > [...]
> >
> > Is this just a function of the LED light source of the LS-4000, or is
> > this a function of RGB sensitivity by the CCD sensor?
>
> [...]
>
> On the other hand, you seem to be speculating about a problem in the
> scanner, suggesting that you may have intended to say that the hot colors
> that appear in the scan aren't on the film at all. If they're not on the
> film, and they're not on the print, then it may be that the monitor is
> miscalibrated. After all, when you look at a scan, you're looking at it on
> your monitor.

  Is Dieder judging these "hot" colors as they appear on the print, versus
how they appear on the monitor after a scan?  Could Dieder essentially be
judging the gamut of a print versus the gamut of scan & monitor, which
surely should be different(?)

cheerios ... shAf  :o)
Avalon Peninsula, Newfoundland
www.micro-investigations.com (in progress)


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