QTR-Quadtone RIP

--- In QuadtoneRIP@yahoogroups.com, "dlruckus" <dlruckus@...> wrote:
>
> Hello Jeff.
> Actualy, if everything is calibrated and profiled properly, and you
> use the ICC profile for softproofing, it probably doesn't matter what
> you use as the working space. You are visually adjusting the file for
> what the output will be anyway. The point of the softproof is to be
> WYSIWYG onscreen. Since Roy used Lab as the basis for linearization of
> the printer curves, it isn't a surprise that it might print ok
> directly from Gray Lab. The match should be as good as the printers
> linearization is.


If my file is actually grayscale, I agree. But I often work in RGB even
for monochrome images (for instance if I want the web version to be
slightly toned).  So I wanted to see which ICC profile I should convert
to in QImage to get the best results when printing, as well as see if
this workflow would be any different from converting to gray-lab in
Photoshop and then saving that as a tiff to print in QTR.



> Why do you use perceptual intent with B&W since nothing can possibly
> be out of gamut? (Not a criticism, just curious.)


Gamut isn't just about color. Can your printer reproduce L* values from
zero all the way to 100? Mine can't, especially on matte paper where the
darkest I can get is about L=17.