Re: ICC v4
Re: ICC v4
- Subject: Re: ICC v4
- From: Roger Breton <email@hidden>
- Date: Fri, 18 Nov 2005 22:31:36 -0500
> Same primaries as sRGB, but with an expanded device value range,
> which expands the gamut.
Do we know how far do those new primaries definition expands in XYZ or yxY?
Say compared to WideGamutRGB or ProPhoto. I'm trying to get a grasp for the
size of this thing. Any URL?
>>> (hence the large allowance for overrange or "specular
>>> component" values.)
>
>> You mean the portion over 1.0 to 7.5?
My god, that's huge specular component! Is that designed to to map out
logarithmically or on some other scale the range of scene luminances /
illuminance? Like from 50,000 Lux down to, I don't know, something crazy
like 100 Lux?
> No, they are separate things. XPS is the
> so called "PDF killer", a page description language.
Oh yes, I'd forgot about this one.
> It seems to depend on ICC profiles for it's color
> definitions.
How ironic.
> Graeme Gill.
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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| >Re: ICC v4 (From: Graeme Gill <email@hidden>) |