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RGB space gamut volume and output profile gamut volume

Subject: RGB space gamut volume and output profile gamut volume
From: "Olivier Desmaison" <email@hidden>
Date: Sun, 18 Feb 2007 19:30:12 +0100
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There are many references that indicate that sRGB has a gamut volume of 820,000 colors and AdobeRGB about 1,2 million. If I check a good RGB glossy output profile, it comes close to 1,4 million shown in MonacoProfiler. The same plotted on an xyY 2D graph shows some consistency.

In a 3D graph the story is totally different : the output profile is far smaller. I'm on XP but it seems that on some other systems, Gamut Work from Monaco shows that AdobeRGB is about 2.5 million, and sRGB 1.4, this is also where I got the output profile volume.

I assume this is a gamut volume calculation issue, but I don't understand.

Any help ? Olivier

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References:
	>iSis Colorport and/or diagnostics (From: "edmund ronald" <email@hidden>)

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