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

["Paul D. DeRocco" <pderocco@ix.netcom.com>]

> 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.
>
> i.e. a picture of a car with its brake lights on in the middle of the
> day. The result is an unusually 'bright' red result on film that does
> not appear in the print, but does appear in the scan.
>
> 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?

If I take you literally, you seem to be saying that the hot colors appear on
the film, as well as the scan. If they're on the film, then they ought to be
in the scan, too, and your problem may be that the printer gamut isn't large
enough to represent the color.

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.

By the way, quite a few of my pictures have traffic or brake lights in them,
and I haven't noticed any funny effects when scanning either Kodachrome or
E6 slides on my LS-2000.

--

Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@ix.netcom.com


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