Digital BW, The Print

Can you talk me through that?

Logically, a colour profile must include white, shades of grey and
black? Or am I missing something?  I suppose I must be, because
otherwise you wouldn't bother with black and white profiles.  Perhaps
the issue is the translation from grayscale using a colour profile
could introduce a slight colour shift?  In which case, couldn't a
conversion program from colour to B&W ICC remove this?

How does a profile actually work?  I suppose I assume that a colour
profile is essentially a set of curves in RGB whereas a B&W profile is
a grayscale curve.  Is that right?

Regards
Gareth

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Steve Kale
<stevekale@b...> wrote:
>
> This would not make any sense as the workflow/driver component for
B&W is
> different than colour.
> 
> 
> > From: garethjolly <garethjolly@b...>
> > Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> > Date: Wed, 28 Dec 2005 09:11:51 -0000
> > To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> > Subject: Re: [Digital BW] Advanced B&W printing and ICC profiles
> > 
> > Actually, while I think about it, can anyone come up with (or know of)
> >  a program that will convert colour profiles to B&W?
> > 
> > For those of us without spectrometers, it would be great to be able to
> > take a 'canned' profile off the net then simply convert to a B&W
profile.
> > 
> > Regards
> > Gareth
> >
>