RE: Humans (and cameras and scanners) do not have a color gamut (?)
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: Roger Breton via colorsync-users <email@hidden>
- Date: Tue, 7 Jan 2020 17:18:46 -0500
Henry,
I agree, the visible spectrum has a (physical) "limit" but not the camera? No
two cameras are likely to have the same response to the spectrum locus. The
limit, in this case, is in the "object" being captured -- not in the camera
itself.
Do you see the difference?
/ Roger
-----Original Message-----
From: colorsync-users
<colorsync-users-bounces+graxx=email@hidden> On Behalf Of Henry
Davis via colorsync-users
Sent: Tuesday, January 7, 2020 5:17 PM
To: email@hidden
Subject: Re: Humans (and cameras and scanners) do not have a color gamut (?)
Thanks Roger. What I don’t understand is the idea that the visible spectrum as
I understand it has some sort of gamut - it has defined ends. That seems like
a gamut to me.
Henry Davis
> On Jan 7, 2020, at 4:55 PM, Roger Breton via colorsync-users
> <email@hidden> wrote:
>
> Henry,
>
> I'm not a digital camera designer but what don't you understand about the
> fact that a camera is a sophisticated "light detection system"? It's pretty
> much a color measuring instrument (others could correct me) but an i1pro does
> not have a "gamut" per se or a filter-based colorimeter, they take light in
> and spit out numbers in response -- same with digital cameras, they take
> light in and spit out sets of RGB numbers. Surely there's a lot of math going
> on inside the CPU of a Nikon or a Canon or a SONY camera, like estimation of
> scene illuminant by which tonal responses are likely adjusted. There may very
> well be some kind of "model" of various 'natural scenes' because, just like
> during the creation of output profiles, it helps to have some kind of
> "assumptions" as to what ranges of colors or luminances are to be expected.
> But is that a"gamut" per se? A gamut is a physical construct, it comes from
> something measurable that have "limits".
>
> I hope that helps...
>
> / Roger
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