Re: Simulate Paper Color and A2B0 tags
Re: Simulate Paper Color and A2B0 tags
- Subject: Re: Simulate Paper Color and A2B0 tags
- From: Steve Kale <email@hidden>
- Date: Tue, 27 Sep 2005 22:05:45 +0100
- Thread-topic: Simulate Paper Color and A2B0 tags
Thanks - that's what I thought
Cheers
Steve
> From: Steve Upton <email@hidden>
> Date: Tue, 27 Sep 2005 09:57:22 -0700
> To: <email@hidden>
> Subject: Re: Simulate Paper Color and A2B0 tags
>
> 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
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