Re: 1 billion colors
Re: 1 billion colors
- Subject: Re: 1 billion colors
- From: John Gnaegy via colorsync-users <email@hidden>
- Date: Mon, 06 Jan 2020 15:07:42 -0800
> #SomeHugeNumberOfColors
"#SomeHugeNumberOfRGBTriplets" is more accurately what I meant, if you're
defining "color" as a user's perception of light stimuli. But then what's the
name for what a spectrophotometer reads? Is that a "color"? Maybe it's a set of
measured values.
At any rate, you've got:
1) the number of RGB triplets (let's just stick with RGB for now) so
8 bit: ((2 to the power of 8) to the power of 3) = 16,777,216
10 bit: ((2 to the 10th) to the 3rd) = 1,073,741,824
12 bit: ((2 to the 12th) to the 3rd) = 68,719,476,736
2) the number of different measured values your spectrophotometer will will
read when pointed at your display as it's trying to display those triplets.
How many? It depends on both your display and your spectro.
3) the number of individually perceptible colors you could perceive given any
of those large sets of inputs, for a given environment, meaning for a given
light level and color surround. Your eye (well, your brain) adapts constantly
for your surround.
And it all seems pretty unnecessary and over the top until you're trying to
make a nice smooth gradient between two similar colors. 10 bit vs 8 bit gives
you four times as many bands...and although 4 is better than 1, it can still be
obviously noticeable depending on the two colors you're trying to go between.
Same with 12 vs 10 I'd think, 16 is better than 4 but it still might not be
enough to get an imperceptibly smooth gradient between two similar colors.
So is there anywhere you can see a nice, smooth, imperceptibly changing
gradient? Turns out yeah. The sky. Go out and look at how smoothly the sky
transitions from one color overhead to a wildly different color at the horizon
(I mean without clouds). It's pretty amazing. And it kind of makes me want to
never look at a display again.
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