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Piezography method 3 and custom QTR profiles for digital negatives

Piezography method 3 and custom QTR profiles for digital negatives

2014-03-06 by <gfrancophoto@...>

Hello,
I have been using the Piezography method 3 inkset for digital negatives for Pt/Pd and Cyanotypes and am happy with the quality of the negatives but was wondering if anyone has recently tried to create their own QTR profiles for this inkset instead of using the supplied 1.4 to 1.8 profiles provided with the inkset. I would like to have a method that includes the correction curve in the profile(wasn't this the big reason for using QTR negs over other methods in the first place?) and didn't know if I could expect results that might compare favorably to those achieved using the supplied profiles. I have made profiles from scratch using color inks before and don't mind doing so with the Piezography inks, but just thought I would ask if someone has tried already and liked the results or not before I invest the time. I am using Piezography 3 Digineg ink set on an Epson R2880 and print to Pictorico Ultra Premium(TPS) and Pictorico Premium(TPU) transparency media. I am also considering moving to the new method 2 which would add more ink channels and presumably might make for even better negatives using a traditional profile.

Thanks for any replies,
Greg Franco

Re: [QuadtoneRIP] Piezography method 3 and custom QTR profiles for digital negatives

2014-03-06 by Yashasvi Bhuta

I exchanged emails wd mr cone couple of months back with the same question and he replied saying that it is not viable


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From: gfrancophoto@... ;
To: ;
Subject: [QuadtoneRIP] Piezography method 3 and custom QTR profiles for digital negatives
Sent: Thu, Mar 6, 2014 4:33:36 AM

Hello,

I have been using the Piezography method 3 inkset for digital negatives for Pt/Pd and Cyanotypes and am happy with the quality of the negatives but was wondering if anyone has recently tried to create their own QTR profiles for this inkset instead of using the supplied 1.4 to 1.8 profiles provided with the inkset. I would like to have a method that includes the correction curve in the profile(wasn't this the big reason for using QTR negs over other methods in the first place?) and didn't know if I could expect results that might compare favorably to those achieved using the supplied profiles. I have made profiles from scratch using color inks before and don't mind doing so with the Piezography inks, but just thought I would ask if someone has tried already and liked the results or not before I invest the time. I am using Piezography 3 Digineg ink set on an Epson R2880 and print to Pictorico Ultra Premium(TPS) and Pictorico Premium(TPU) transparency media. I am also considering moving to the new method 2 which would add more ink channels and presumably might make for even better negatives using a traditional profile.

Thanks for any replies,
Greg Franco

RE: Piezography method 3 and custom QTR profiles for digital negatives

2014-03-06 by <sanking@...>

Jon Cone's Method 3 and Piezography 2 are both capable of very smooth digital negatives. The advantage of the 2 system is that you can use the same printer to make regular Piezography prints as well as digital negatives without changing the inks. With both systems you will choose a curve that gives you approximately the correct density range for your process, and then apply an .acv curve to the image file for final correction.

You could of course write your own profile for digital negatives with the K7 inks. How well it will compare to the Method 3 and Piezography profiles would depend on your profiling skills, and the alternative process you plan to use. For cyanotype or pt/pd I think it is possible to create profiles that would compare favorably, though they might lack the smoothness for printing on smooth papers with silver.

Sandy

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