QTR-Quadtone RIP

Hello to everybody,

I would like to report some strange behaviour between QTR and Qimage:

I have worked with an image as .psd in the gray LAB workspace and 
converted it to QTR - RGB Matte Paper for further use in Qimage (and 
printing out with QTR- Gray Matte Paper). However Qimage does not 
recognize the profile and says "no embedded icc profile". I have now 
noticed that if I save the image as a .tif instead of a .psd Qimage 
well reads the embedded profile. 

Anybody has had similar experiences? Seems to be mor a Qimage problem 
than a QTR issue?

Regards,

Ignacio

smack0606 wrote:
> Hello to everybody,
> 
> I would like to report some strange behaviour between QTR and Qimage:
> 
> I have worked with an image as .psd in the gray LAB workspace and 
> converted it to QTR - RGB Matte Paper for further use in Qimage (and 
> printing out with QTR- Gray Matte Paper). However Qimage does not 
> recognize the profile and says "no embedded icc profile". I have now 
> noticed that if I save the image as a .tif instead of a .psd Qimage 
> well reads the embedded profile. 
> 
> Anybody has had similar experiences? Seems to be mor a Qimage problem 
> than a QTR issue?
> 
> Regards,
> 
> Ignacio

Be careful with PSD files in Qimage. Stay with Tiffs. But 
there are other things going on.

I have used converted greyscale Tiffs so far in Qimage (older 
version) but recently I have seen strange artifacts in the 
resulting RGB print files too (with Qimage CM off). Several 
months ago Mike has changed the recognition of images without 
profiles (or profiles it doesn't know, or EXIF's it can't 
guess the profile by). So it becomes more difficult to get 
already to printer profile converted greyscales through as 
with CM off there are 1 step pixel changes in flat areas of 
the resulting RGB print to file Tiff (PS does that too with CM 
off I have seen, but Picture Window Pro doesn't with CM off) 
and with CM on you get profile recognition problems.

I'm afraid that the Qimage route is becoming an RGB only route 
and possibly the conversion to the printer profile has to be 
done with Qimage too + the new QTR generated profiles. I have 
done some greyscale testing again and it just doesn't work 
anymore. Had no time for the RGB route right now.

                    --
           Ernst Dinkla


www.pigment-print.com
(         unvollendet         )

Hi Ernst,

this is really weird. I have had no problems with the icc recognition 
of Tiff files but Qimage simply refuses to read psd files. 

I use to convert the file in PS to the QTR RGB profile and save it as 
a tiff (everything colormanaged). I thought it would be the best way 
to print in QTR via Qimage in order to stay in RGB (however the print 
seems to be the same if the Qimage output profile is the QTR-RGB Gray 
or simply the QTR Gray profile).

I will check if Qimage recognizes the profile in a grayscale Tiff 
file.

Thank you and regards,

Ignacio

> Be careful with PSD files in Qimage. Stay with Tiffs. But 
> there are other things going on.
> 
> I have used converted greyscale Tiffs so far in Qimage (older 
> version) but recently I have seen strange artifacts in the 
> resulting RGB print files too (with Qimage CM off). Several 
> months ago Mike has changed the recognition of images without 
> profiles (or profiles it doesn't know, or EXIF's it can't 
> guess the profile by). So it becomes more difficult to get 
> already to printer profile converted greyscales through as 
> with CM off there are 1 step pixel changes in flat areas of 
> the resulting RGB print to file Tiff (PS does that too with CM 
> off I have seen, but Picture Window Pro doesn't with CM off) 
> and with CM on you get profile recognition problems.
> 
> I'm afraid that the Qimage route is becoming an RGB only route 
> and possibly the conversion to the printer profile has to be 
> done with Qimage too + the new QTR generated profiles. I have 
> done some greyscale testing again and it just doesn't work 
> anymore. Had no time for the RGB route right now.
> 
>                     --
>            Ernst Dinkla
> 
> 
> www.pigment-print.com
> (         unvollendet         )
>