Re: NEC PA271Q "Native" chromaticities
Re: NEC PA271Q "Native" chromaticities
- Subject: Re: NEC PA271Q "Native" chromaticities
- From: David Scharf via colorsync-users <email@hidden>
- Date: Sun, 5 Jan 2020 21:12:55 -0800
So you're saying that when these "color" numbers come up that we will
see only gray? Nah, I don't think so. I think that most of us understand
the Physics and and perceptive aspects of color. Perhaps you mean that
these "invisible" colors do not exist as perceptually different from
other colors close by in number?
DAVID SCHARF PHOTOGRAPHY
*DAVID SCHARF*
On 1/5/20 5:26 PM, Andrew Rodney via colorsync-users wrote:
I'm talking both.
Color, is a perceptual property. So if you can't see it it's not a color. Color
is not a particular wavelength of light. It is a cognitive perception, the
excitation of photoreceptors followed by retinal processing and ending in the
our visual cortex, within our brains. Sounds like biology to me.... As such,
colors are defined based on perceptual experiments.
Fairchild's "Color Appearance Models". Page 1!
"Like beauty, color is in the eye of the beholder. For as long as human scientific
inquiry has been recorded, the nature of color perception has been a topic of great
interest. Despite tremendous evolution of technology,fundamental issues of color
perception remain unanswered. Many scientific attempts to explain color rely purely on
the physical nature of light and objects. However, without the human observer, there is
no color".
Further on the same page:
"It is common to say that certain wavelengths of light, or certain objects are a
give color. This is an attempt to relegate color to the purely physical domain. It is
more correct to state those stimuli are perceived to be a certain color when viewed under
specific conditions".
Page 1 paragraph 2 of Digital Color Management by Giorgianni and Madden:
"But color itself is a perception and perceptions only exist in the mind".
Page 11 of The GATF Practical guide to Color Management:
"Although extensive research has been conducted, we still not completely understand what
happens in the brain when we "see" color. The visual sensation known as color occurs when
light excites photoreceptors in the eye called cone cells".
Page 75 of Understanding Color Management by Sharma:
"Color is an impression that we form in our brains".
On Jan 5, 2020, at 5:57 PM, David Scharf <email@hidden> wrote:
Hi Andrew,
I think your talkin color science and engineering and I'm talkin biology.
Inability to differentiate close colors does not mean their non-existence or
imperceptibility. That's not silly, its actual!
DAVID SCHARF
http://www.electronmicro.com <http://www.electronmicro.com/>
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