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: Andrew Rodney via colorsync-users <email@hidden>
- Date: Tue, 7 Jan 2020 13:56:28 -0700
> On Jan 7, 2020, at 1:51 PM, WAYNE BRETL <email@hidden> wrote:
>
> (changing the subject now that the seemingly interminable is seemingly
> terminated) :>)
>
> Could you (and/or others) expand on this statement?
> "Humans (and cameras and scanners) do not have a color gamut."
See:
http://www.color-image.com/2012/08/a-digital-camera-does-not-have-a-color-gamut/
<http://www.color-image.com/2012/08/a-digital-camera-does-not-have-a-color-gamut/>
Further (and getting back to Fairchild), I asked this question directly to Mark
D. Fairchild from RIT and I just would like to share his answer here:
"This one is easy for me … cameras absolutely do not have gamuts.
A color gamut is the range of colors produced by a device or system. I can take
an image from any camera and produce any colors I like. The colors produced are
not a property of the camera or limited by the sensors. Some argue that the
cameras can only detect a certain range of colors and that also has nothing to
do with “gamut” even if it were true. I can put any visible stimulus in front
of any camera (that responds to visible light) and I will get some response.
How that response is rendered to a display has an impact on the quality and
color accuracy of the camera, but it in no way creates a gamut (only the
display or some arbitrary limitation of the display such as R=G=B to make only
grayscale images limits the color gamut.).
So I fall strongly, and unequivocally, on the side that says cameras do not
have color gamuts. (FWIW, this isn’t even a discussion among the faculty in our
program, we all agree on this.)
The human eye also does not have a gamut. The spectral locus on chromaticity
diagram (which is also missing a dimension) simply shows the response of the
eye to monochromatic light. The limit is in the light, not the eye. The camera
can also respond to all that light."
Andrew Rodney
http://www.digitaldog.net/ <http://www.digitaldog.net/>
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