Digital BW, The Print

David,

The way I understand relative is that it somehow does a clipping of 
out-gamut values without re-evaluating in-gamut values oppositely to 
perceptual that compresses them all.

Extrapolating this to L*, while it still runs from media white to 
media black (with BPC) in both case, L* would be re-scaled in 
perceptive and not in relative ?

I know it doesn't add anything to anyone's workflow, I just can help 
thinking about it without finding out and get obsessed...

As said, I'm new to this so thank for being patient...

Olivier

 
> In a message dated 2/27/06 12:57:45 AM, odesmais@... writes:
> 
> 
> > Sorry if I was unclear. QTR is quite well documented, so one 
knows 
> > perceptual is to be used.
> > 
> > What I can't figure out due to limited understanding is WHY 
perceptual 
> > instead of relative is being implemented by Roy.
> > 
> > It's about pure personal understanding...
> > 
> > 
> 
> I would guess because its the most common default. So it would be 
selected, 
> not because its actually related to what the software's doing, 
intentwise; but 
> because its the default intent that is most commonly autoselected, 
and 
> therefore the best choice for single intent functions.
> 
> C. David Tobie
> Product Technology Manager
> ColorVision Business Unit
> Datacolor Inc.
> CDTobie@...
> www.colorvision.com
> 
> 
> [Non-text portions of this message have been removed]
>