filmscanners_owner@halftone.co.uk <> wrote:
>> 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.
,
>> 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?
I do not have a scanner that utilizes LEDs; but if this will help all to
the better. I have found that, when I get files printed via a
Chromira - which does utilize LED as opposed to lasers - at my local
professional custom photo lab, there are limitations in reproducing REDs
and YELLOWs with the same saturation levels as are on the film or I can
get off a scan on my monitor or when I print it on my Epson dye based
inkjet. In my case the are significantly less saturated. Thus, your
problem just might be a function of the LEDs' characteristices and
capabilities.
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