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: Henry Davis via colorsync-users <email@hidden>
- Date: Wed, 8 Jan 2020 17:10:00 -0500
If the input sensitivity is different for various camera sensors it
makes sense to me if they are compared to each other as "gamuts".
Surely manufacturers describe their sensor's capability - what do they
call it? Maybe range, or dynamic range? But drill one step deeper
into the word "range" and you will find numbers. If all sensors are
sensitive beyond visible light then I can understand that there is no
color gamut for sensors because all sensors would have the same color
gamut - that is, all colors. Entirety(all color) isn't limited, and
calling it a "gamut" suggests some sort of limits. If that's the case
then "gamut" would not be the best word to describe it.
As for numbers . . .
Within the spectrum there is a portion that represents colors of
visible light. The wavelengths of visible colored light start and
stop at specific places(numbers). Are these numbers color, no they
are numbers. Regardless, to my way of thinking that is the "gamut" of
visible light within the entire spectrum. I'm still fussing with
myself over that word and its proper use. Within the entire spectrum
visible light has limits. Unlike the sensor description above,
"gamut" would seem like a good word to describe it because color is
limited within the entire spectrum.
Saying that numbers aren't in fact colors seems to contradict the
numeric gamut plot of an output device. An output device's gamut is
represented by numbers. Of course, numbers are not colors - but they
represent colors in both input and output.
Gamut, limits, range - I think any of these words could be used to
describe a sensor's capability and anyone would grasp the subject of
the conversation. Of course, somebody might object to either of these
words being used - depending on their "sensitivity".
Henry Davis
On Jan 8, 2020, at 3:52 PM, Wayne Bretl via colorsync-users wrote:
<Snip>
I would add the further note that sometimes the sensor gamut is the
limiting
factor on the final color output, and sometimes the color space
(e.g. sRGB)
is the limiting factor.
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