Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Mitch Alland
<malland@x> wrote:
> For: John Hollenberg
> 
> >   The reason
> > I ask is that Andrew Rodney on Imaging Revue web site told me that
> > there was no advantage to grayscale for IP..
> 
> Really? I though that the advantage was that grayscale does not use
the 
> yellow ink which reduces metamerism.

Let's be clear here.  Of course there is an advantage to using the
GRAY profiles.  What Andrew was saying is that there is no advantage
to converting image to grayscale from RGB before bringing into IP. 
The RGB  image must be in B&W, of course, but the associated profile
can still be Adobe 1998 or whatever.  When I said there was no
difference in prints, I was comparing these two workflows:

1) Take color image and convert to B&W using Convert to B&W Pro Plugin
2) At this point, image is still tagged with Adobe RGB
3) For first method, print this file in IP using gray profile
4) For second method, convert to gray gamma 2.2 in Photoshop, then
   print in IP using gray profile

I believe Andrew was saying (but I don't know if it is true) is that
if you convert to gray gamma 2.2 in Photoshop first the "Black Point
Adjust" slider doesn't function in IP.

--John