QTR-Quadtone RIP

Hi Frans.
I can't speak for others but it wouldn't have occurred to me to be
concerned over that issue. The reason being that I would never have a
reason for doing it anyway. It is a Photoshop issue not a QTR one. If
you use that method you are accepting whatever Photoshop wants to do
in the conversion. I prefer to control the conversions myself in so
far as my current skills allow. I'd be surprised to hear that folks
heavily involved with editing and printing B&W don't already know all
this, even as you apparently do. It's certainly not a documentation
issue for QTR. It's hard to discern where you are coming from with all
this.

It looks like your concerns and my somewhat ham handed responses to
them have initiated some actions toward trying to improve the basic
information for newcomers to QTR. That is all to the good, however,
it's unlikely to become so all inclusive as to explain all there is to
know about Color management and best Photoshop practices for B&W etc.
Some of this has to be assumed as part of the skill set held by the
prospective user. A lot of it is still shadowy stuff, I would
speculate, for most of us including me.

Let me tell you where I am coming from in this. Just as you eventually
did, I read and reread every bit of information that I found within
the QTR package. That was several years ago now. After I had done
that, in a few hours over the course of a couple of days I set up from
scratch QTR curves for a half dozen different papers and an ink set I
had diluted to grays myself. This was done for two printers that Roy
had provided drivers for but did not otherwise support with built in
curves. I then printed a few prints. One look at them and I
immediately e'mailed Roy and asked where to send a check. He responded
and I did so.

Now I am not some intellectual giant, yet it was possible for me to
manage to work out any puzzles I encountered in the process. I am, by
no means, an expert on any of this. I don't even like the word. It
brings to mind those learned people who held the prevailing views that
the earth was flat or that the universe revolved around it.

It would be wonderful if Roy and the "experts" were to write a
detailed book about every aspect of QTR and all the forknowledge
required to use it. I'd be the first to dive in and learn more but
would never think to demand it of them.

Once you or others are past the beginning stages of learning how to
use QTR, make some popcorn, type the word "Roy" into the group search
engine and sit back and review all his expressed wisdom through time
:-) Then pick out a few other names such as Stephen and do the same.
Yes, the search engine stinks, but it will work for this.

OK. Over and out. If I have offended anyone here it is not intentional
and I apologize.

Regards
Duane



--- In QuadtoneRIP@yahoogroups.com, "Frans Waterlander"
<frans2001@...> wrote:
>
> Tom,
> 
> There is indeed no loss of contrast when converting a desaturated 
> image to grayscale, but there is a definite loss of contrast when 
> converting an RGB color image to grayscale as compaired to 
> desaturating an RGB image. So for an RGB image, it seems logical to 
> me to NOT convert to grayscale but desaturate instead. That's my 
> whole point here.
> 
> Frans Waterlander
> 

>