Datacolor User to User Support Group.

Profile targets are not printed through an intent (or a profile), so  
they are not intent-specific, they can be used for any intent.

Intents, for the most part, only effect out of gamut colors. Since  
most of the colors in SpyderProof are in gamut, you won't see much  
change with different intents when testing them from there. But check  
the color ramps in the upper left image; they will change.

The Saturation intent gives prioity, when choosing a printable color,  
to replace an unreachable color, to the color's saturation, at the  
expense of the color's exact hue or brightness. This offers more punch  
and is often what people want.

If your printer can't reach the exact deep, saturated orangey yellow  
of a New York cab, then you most likely will prefer a somewhat less  
deep, somewhat less orange color that retains that saturated punch,  
instead of a much duller color that has less of the visual impact you  
remember, but is more literal by being a darker, duller orange.

Relative Colorimetric will give you that darker duller result, which  
for some uses may be what you need. And Perceptual will give you  
something in between; some times a compromise is the best answer.  
Absolute Colorimeteic is for painting the entire page the color of  
another media; typically only used for things like emulating newsprint  
on white proofing stock.

This all pertains to Datacolor printer profiles; other companies do  
things somewhat differently.

C. D. Tobie
Global Product Technology Mngr.
Digital Imaging & Home Theater
Datacolor.com
CDTobie@...

On Sep 4, 2009, at 10:24 PM, "dsainsbu"  
<david.sainsbury@...> wrote:

> What are the advantages/disadvantages of the various rendering  
> intents when creating printer profiles?
> Do you have to use the same rendering intent when printing an image  
> as the intent used to create the profile?
> Dave Sainsbury
>
>
>
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