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Old Feb 25, 2016, 7:59 AM   #21
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Eight bit sRGB and eight bit Adobe RGB both have the same number of colors in their gamut: 16,777,216.

The sRGB gamut encompasses about 35% of all visible colors, while the Adobe RGB gamut encompasses about 50% of all visible colors, the increase appearing mostly in greens/cyans.

Those extra colors must come from somewhere. If you add greens/cyans to the 16,777,216 available colors, you must give up some colors elsewhere in the gamut.
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Old Feb 25, 2016, 8:58 AM   #22
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There are still only 256 levels of available Green. If you start measuring at a lower point of the green spectrum, the same number of steps means the steps have to be larger. You can't assign 'extra' blue levels to green.
256 Green, 256 Blue, and 256 Red.
If you want more colors, you must increase the bit depth.
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Old Feb 25, 2016, 10:06 AM   #23
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Quote:
Originally Posted by VTphotog View Post
There are still only 256 levels of available Green. If you start measuring at a lower point of the green spectrum, the same number of steps means the steps have to be larger. You can't assign 'extra' blue levels to green.
256 Green, 256 Blue, and 256 Red.
If you want more colors, you must increase the bit depth.
Yes, but with a finite number of colors, and more greens/cyans, some of the blues and reds in the palette get skewed toward green/cyan. [1,0,0] will always be pure red whatever the color space, but [1,0.1,0.1] in Adobe RGB will be greener than [1,0.1,0.1] in sRGB.

Remember that sRGB is a standard color space for monitors, while Adobe RGB is a color space intended to accommodate as much as practicable the CYMK color space used by printers. sRGB doesn't have to convert to anything, but Adobe RGB is intended to converts to CYMK. When you edit an sRGB image on an sRGB monitor, you'll get the sRGB color palette. But when you edit an Adobe RGB image on an sRGB monitor, the colors you see won't be the colors you'll get when you print.
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Old Feb 25, 2016, 10:45 AM   #24
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Until earlier today, you never mentioned Adobe RGB was part of your workflow, so I never mentioned it like VTphotog did. Otherwise I'd have cautioned you against it earlier.
I know, VT made me realize it was part of the workflow, which made me bring it up.
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Old Mar 5, 2016, 10:32 AM   #25
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i really sympathize with you conor, many years ago now i designed a pamphlet for a local business, i spoke with the printers first and they told me which pantone set to use in photoshop, i cant remember how i did it now but i know theres a lot of them in there to choose from, anyway on my monitor colours looked dull and lacked contrast, but when they printed them out they looked amazing.
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