Re: converting printable colours
Re: converting printable colours
- Subject: Re: converting printable colours
- From: Steve Upton <email@hidden>
- Date: Fri, 16 Apr 2004 10:02:11 -0700
At 7:46 AM -0400 4/16/04, Roger Breton wrote:
>
> John Swift wrote:
>
>> I am trying to figure out why converting files to output profiles in
>
>> which none of the colours are out of gamut, produces different results
>
>> using perceptive and relative rendering intents.
>
>
>
> Because perceptual should be doing gamut compression, and relative
>
> colorimetric should be clipping. Gamut compression means reproducing
>
> a larger input gamut while keeping some degree of relative distance
>
> between the colors. This means that to "make room" for out of gamut colors,
>
> in gamut colors have to be compressed into a smaller space in the
>
> gamut.
>
>
>
>
What may not be so obvious at first is that even if the source image does
>
not contain any out-of-gamut colors compression nevertheless applies. That
>
behavior is by design.
right AND the compression can be in 3D. Gamut compression does not only occur in the a/b plane. So you can see this even if you are analyzing neutrals.
Regards,
Steve
____________
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o Steve Upton CHROMiX www.chromix.com
o (hueman) 866.CHROMiX
o email@hidden 206.985.6837
o ColorGear ColorThink ColorValet ColorSmarts ProfileCentral
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