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Re: Humans (and cameras and scanners) do not have a color gamut (?)
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Re: Humans (and cameras and scanners) do not have a color gamut (?)


  • Subject: Re: Humans (and cameras and scanners) do not have a color gamut (?)
  • From: Iliah Borg via colorsync-users <email@hidden>
  • Date: Thu, 9 Jan 2020 11:30:50 -0500

Useful definitions help advancing knowledge.

What is the upside of ascribing colour gamut to a sensor? What practical tasks
are facilitated with that? What would be a strict, communicable definition?

On Jan 9, 2020, at 11:21 AM, Henry Davis via colorsync-users wrote:

> It keeps being suggested that without an observer there is no such thing as
> color - for there to be color it must be perceived.  That old tree falling in
> the forest . . .
>
> Since there is no proof one way or another we have to settle for opinion at
> this point.  For me, if the existence of color depends on being observed why
> not take that position all the way to its end, to where there is no spectrum,
> no waves of energy, no trees.  Without an observer there are no things at all.
>
> I believe that things exist without observers.  Maybe that’s partly the
> reason why I have trouble with a sensor not having a color gamut.  A camera
> sensor isn’t designed to amplify sound waves.  It sounds absurdly obvious to
> say that a camera sensor is sensitive to, um, color.
>
> Does the eye distinguish color prior to the brain’s post processing?  Yes,
> the eye has already begun the work of distinguishing color before the brain
> gets involved.
>
> Henry Davis

--
Best regards,
Iliah Borg
LibRaw, LLC
www.libraw.org
www.rawdigger.com
www.fastrawviewer.com



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  • Follow-Ups:
    • Re: Humans (and cameras and scanners) do not have a color gamut (?)
      • From: Henry Davis via colorsync-users <email@hidden>
    • Re: Humans (and cameras and scanners) do not have a color gamut (?)
      • From: edmund ronald via colorsync-users <email@hidden>
References: 
 >RE: perceptual differences in Lab deltaE (From: Roger Breton via colorsync-users <email@hidden>)
 >Re: perceptual differences in Lab deltaE (From: Wire ~ via colorsync-users <email@hidden>)
 >Re: perceptual differences in Lab deltaE (From: Andrew Rodney via colorsync-users <email@hidden>)
 >Humans (and cameras and scanners) do not have a color gamut (?) (From: WAYNE BRETL via colorsync-users <email@hidden>)
 >Re: Humans (and cameras and scanners) do not have a color gamut (?) (From: Andrew Rodney via colorsync-users <email@hidden>)
 >Re: Humans (and cameras and scanners) do not have a color gamut (?) (From: Henry Davis via colorsync-users <email@hidden>)
 >Re: Humans (and cameras and scanners) do not have a color gamut (?) (From: Iliah Borg via colorsync-users <email@hidden>)
 >Re: Humans (and cameras and scanners) do not have a color gamut (?) (From: Henry Davis via colorsync-users <email@hidden>)
 >Re: Humans (and cameras and scanners) do not have a color gamut (?) (From: Iliah Borg via colorsync-users <email@hidden>)
 >Re: Humans (and cameras and scanners) do not have a color gamut (?) (From: edmund ronald via colorsync-users <email@hidden>)
 >RE: Humans (and cameras and scanners) do not have a color gamut (?) (From: Roger Breton via colorsync-users <email@hidden>)
 >RE: Humans (and cameras and scanners) do not have a color gamut (?) (From: WAYNE BRETL via colorsync-users <email@hidden>)
 >Re: Humans (and cameras and scanners) do not have a color gamut (?) (From: Graeme Gill via colorsync-users <email@hidden>)
 >Re: Humans (and cameras and scanners) do not have a color gamut (?) (From: WAYNE BRETL via colorsync-users <email@hidden>)
 >Re: Humans (and cameras and scanners) do not have a color gamut (?) (From: Henry Davis via colorsync-users <email@hidden>)

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