QTR-Quadtone RIP

Howard,

You've got a good start.
Usually a "toner" ink runs all the way into the shadows.  In general 
that works
just fine.  But if you'd like it just to match the warm grays, one 
simple way is
to just use COPY_CURVE to copy the warm gray curves into the cool gray 
curves.
You'll want to reduce all of the grays ink limits since there's twice 
as much ink.

This ought to give you a pretty neutral curve set.  Now just vary the 
ink limits
to tilt the hue warm or cool.  Warm highlights means more light warm 
less light cool,
and opposite for the dark grays.

As long as you are doing subtle amounts the transitions should be fine.

Roy

On Thursday, October 27, 2005, at 03:42  AM, Howard Shaw wrote:

> I'm wondering if anyone has tried split toning effects with qtr and 
> how they
> went about it.
>
> I'm using UT7 and wish for example to create a print that is 
> _slightly_ cool
> in the shadows and midrange and warmer in the highlights.
>
> I thought the best way to approach this would be to use a basic warm 
> curve
> and then introduce the cooler magenta inks as toning curves (M as toner
> curve & LM as toner curve 2).
>
> However I can't seem to get the toner curves to start at anything 
> other than
> 100 no matter what I put in the density box for these inks. The two 
> toner
> curves also almost completely overlap each other so it doesn't seem 
> possible
> to have one toner ink smoothly graduate into the other.
>
> Any ideas?
>
> Thanks
> Howard
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
-
Roy Harrington
roy@...
Black & White Photo Gallery
http://www.harrington.com