QTR-Quadtone RIP

Hi Dave,

It's correct that there's no neutral curve. The typical workflow in QTR is
to choose two curves, like cool and carbon/warm, and then choose a blend
between those two curves at print time to create neutral. You can start with
a 50/50 blend and then move in either direction until you get a tone that
you're happy with. 

QTR will accept RGB images. You might want to check out Roy's grayspace ICC
profiles which you can use to convert your images before printing.

Download grayspaceXYZv2.zip from Roy's download page:
http://homepage.mac.com/royharrington/FileSharing2.html

Instructions are included in the file.

Great to hear that the UT2 inks has worked well for you for such a long
time! I struggled a lot with those curves and I think you were the only one
who actually ended up using them besides myself. 

I just got my densitometer half an hour after writing the last post.
Fortunately it was in good condition with the calibration plaque included.
It was really easy to calibrate and now I'm busy relinearizing my curves. I
might have some ready this evening already. Let me know if you need curves
for any specific papers. I currently plan to do EEM, Photo Rag, Condor
Britewhite and Somerset Velvet Enhanced.

Thanks for the link, I'll check it out!

--
Daniel Staver
http://daniel.staver.no


> Long time no write. My kids are still happy here in Geneva 
> with that print you sent us.
> 
> Thanks for clearing up the curve question - I thought that 
> was the answer but wanted to be sure. BTW I see curves in the 
> Files section here and on your Petraflux site for Carbon, 
> Cool and Sepia for EEM. 
> No neutral as far as I can see....
> 
> Also, my preferred method of converting my digital captures 
> to monochrome (after experimenting with many)is John Paul 
> Caponigro's method which consists of bringing into an RGB 
> file any or all of the RGB channels plus or minus the 
> luminance channel as separate (and therefore, monochrome) 
> layers and editing their effect on the image through layer 
> masks. What I like about this method is the ability to handle 
> the conversion differently in different parts of the 
> image...similar to PKS sharpening I suppose. More for those 
> interested is here:
>  
> http://www.adobe.com/digitalimag/ps_pro_primers.html
> 
> This leaves me with an RGB, as opposed to a grayscale 
> file...this makes no difference (I would assume) to working 
> with the files in QTR I assume, correct?
> 
> I'm sure you'll put the new densitometer to good use and I'll 
> be happy to continue using your curves Daniel - in fact up 
> until now I have been working with the UT2 inks and your 
> curves from way back when...