QTR-Quadtone RIP

milogiacomorambaldi47 wrote:

> 
> If not, then I'm still confused.  Otherwise, then perhaps there's hope
> for my previous workflow, which begins with Canon RAW files, then
> Adobe Camera Raw, then 16-bit ProPhotoRGB, etc.  I'm hoping that
> converting to QTR-GrayLab early in the process, editing entirely in
> 16-bit, converting to 8-bit only when all is ready, then converting to
> QTR-RGB-Matte with Qimage, and finally printing with QTR... will do
> the trick.  Sound plausible?
> 
> Michael

If I recall it correctly Roy addressed the QTR profile 
compatibility of Qimage again when QTR's profiling application 
became part of QTR. However the process I found the most 
reliable (over a longer period) is in converting the Greyscale 
image to QTR-gray-matte profile (or another QTR based gray 
profile) in Photoshop, make it 8 bit, and load the Tiff in 
Qimage for further processing without color management on. It 
doesn't influence the extrapolation and sharpening functions 
of Qimage and keeps the file small till it drops in Qimage. In 
the past I have seen some shadow issues with QTR profiles in 
Qimage which probably had to do with the BPC interpretation in 
Qimage. The last has been changed later on in Qimage but 
Qimage is also a moving target with all its upgrades (a good 
thing) that I'm not willing to test every time its CM 
compatibility with QTR profiles. In theory it should work though.
One feature could tempt me to use Qimage's CM with quad prints 
again and that is the profiling per image on more images per 
print page. I've made some profiles for gloss varnished canvas 
and matte varnished canvas. Both can then be printed on the 
same canvas sheet but individually get the right profile for 
the varnish type used per print.

Ernst

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           Ernst Dinkla


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