Re: Simulate Paper Color and A2B0 tags
Re: Simulate Paper Color and A2B0 tags
- Subject: Re: Simulate Paper Color and A2B0 tags
- From: Steve Upton <email@hidden>
- Date: Tue, 27 Sep 2005 09:57:22 -0700
At 1:34 PM +0100 9/27/05, Steve Kale wrote:
>Hi guys - I hope this question makes sense and is on-topic.
>
>If I were to print and measure a colour test target on non-white (eg light pink) paper and then ICC profile this, what colour would a 100% white page appear in a Photoshop soft proof with this profile WITHOUT Simulate Paper Color checked? White?
monitor white, yes
>When writing A2BO tags, my understanding is that the measured data is luminance scaled to be media relative. How are the a* and b* components scaled (if at all) or rather how should the measured data be scaled such that L*, a* AND b* are scaled properly?
the scaling happens in XYZ and happens on all three coordinates. Subsequently the derived Lab values will be scaled as well. You can find out more in the appendix of the ICC spec.
Regards,
Steve
________________________________________________________________________
o Steve Upton CHROMiX www.chromix.com
o (hueman) 866.CHROMiX
o email@hidden 206.985.6837
o ColorGear ColorThink ColorValet ColorSmarts ProfileCentral
________________________________________________________________________
--
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden