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 16:57:39 -0800
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 PHOTOGRAPHY
*DAVID SCHARF*
http://www.electronmicro.com
On 1/5/20 8:33 AM, Andrew Rodney wrote:
I don't totally agree. Again, we can produce billions of numbers. Some
are not colors. Some differing numbers are the same colors:
R0/G255/B0 in ProPhoto RGB isn't a color. We can't see it. If you
can't see it, it's not a color. It's a set of numbers.
In sRGB, 1/255/240 and 2/255/240 are different triplets of numbers.
They ARE the same color as the dE between the two device values is 0.01:
http://digitaldog.net/files/ColorNumbersNotColors.jpg
16-bit color, the math allows us to define billion’s of color values,
but that doesn’t change the fact we still can’t see 16.7 million
colors in the 24 bit encoding of these pixels. As such, it’s best to
talk about encoding having a potential to define millions or billions
of numbers, device values, that could be associated to a color
value thus color, if we could see them. But if we can’t differentiae
them visibly, it is silly to suggest they are indeed colors. Don’t
confuse a color number, a device value, for a color, a color you can see!
Andrew Rodney
http://www.digitaldog.net/
On Jan 4, 2020, at 11:06 PM, David Scharf <email@hidden
<mailto:email@hidden>> wrote:
Well we can see 16.7 million or even 1 billion colors but we just
can't differentiate them.8-)
David
http://www.electronmicro.com
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