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Re: Ooops - D65 != D65 ???
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Re: Ooops - D65 != D65 ???


  • Subject: Re: Ooops - D65 != D65 ???
  • From: Graeme Gill <email@hidden>
  • Date: Wed, 20 Jun 2007 11:26:09 +1000

Steve Upton wrote:
At 3:03 PM +0200 6/19/07, Uli Zappe wrote:

This only refers to ICC *monitor* profiles, of course ...

actually all profiles should have white points that are D50 relative. It just doesn't
> come up as an issue for most print work as spectral measurements tend to be converted
> to XYZ/Lab using the D50 illuminant. In the case where a different illuminant is used,
> the colors still need to be adapted to D50 prior to being written into the profile.

No, V4 display profiles are different. All profiles have base device behaviour
model that is D50 white relative, because this is the Relative Colorimetric
intent model. The change with V4 display profiles is that even their Absolute Colorimetric
intent is D50 relative, unlike a print profile Absolute Colorimetric intent.

Graeme Gill.
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References: 
 >Re: Ooops - D65 != D65 ??? (From: Andrew Rodney <email@hidden>)
 >Re: Ooops - D65 != D65 ??? (From: Uli Zappe <email@hidden>)
 >Re: Ooops - D65 != D65 ??? (From: Graeme Gill <email@hidden>)
 >Re: Ooops - D65 != D65 ??? (From: Uli Zappe <email@hidden>)
 >RE: Ooops - D65 != D65 ??? (From: "Robert Rock" <email@hidden>)
 >Re: Ooops - D65 != D65 ??? (From: Uli Zappe <email@hidden>)
 >Re: Ooops - D65 != D65 ??? (From: Uli Zappe <email@hidden>)
 >Re: Ooops - D65 != D65 ??? (From: Steve Upton <email@hidden>)

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