You tell me that I can start using my printer and inks and that “I can forge ahead on my own if I wish”, but the question I am asking from the beginning is with which “Curve 1” should I start my calibration. I have a printer and inks that cannot yet be used because I still do not know which “Curve 1” to use. With the exchange rate, it’s almost $ 1,000 that I invest in this process (Printer, inks and films) without being able to use it yet. It’s pretty frustrating. You will understand why I still hesitate to invest more to get the PiezoDN program.
Guy, we are not saying you can not start using your printer. But, as Walker mentioned to you, you bought an ink set that requires the use of PiezoDN software. We think that you should calibrate your system using it.
What you are asking us for is a starting curve1 for use with QTR Curves Tool so you can calibrate using QTR Curves Tool. QTR Curves Tool is free and part of your QTR download which you licensed from QuadTone RIP and is supported by QTR.
[li]The QTR Curve Tool uses .qdif curves. QDIF curves are not compatible with PiezoDN software.[/li][li]QDIF files can only be made and edited with the QTR Curves Tool.[/li][li]We do not use the QTR Curves Tool and we can not produce QDIF files for you.[/li][li]What PiezoDN software produces are .quad files.[/li][li]QUAD files are not compatible with and can not be edited nor adjusted with the QTR Curves Tool.[/li][/ul]
So, we can not give you what you are asking. What you are asking for is something that you need to make yourself and then continue using the free tools to calibrate with.
With PiezoDN software, you will
[li]determine your optimum exposure using a blank piece of Pictorico OHP Ultra Premium film. You can not use any other film of your choice if you are going to use the PiezoDN software because PiezoDN software produces .quad curves in which the ink output is too great for any other film.[/li][li]Then you will print a PiezoDN film target using a PiezoDN base .quad curve and contact print it to determine if you need to limit the dynamic range of the output.[/li][li]Then you will print a PiezoDN film target and contact print it and measure it using a Spectrophotometer (a scanner or your eye are other less desirable (because they are not as accurate) measuring devices that we support).[/li][li]The measurements are put into one of the PiezoDN software tools to create your FINAL curve. You would then at that time be calibrated and linear.[/li][li]On OS X you can option to make a linear output curve that matches your screen display by creating an ICC profile to use in combination with the .quad final curve. Windows version of QTR can not print with an ICC profile so this is not an option on Windows.[/li][li]On OS X or Windows, you can option to use another PiezoDN tool that can create a creative intent (from you) that is incorporated into a linearization curve that includes that creative intent. The creative intent would be derived from making a Photoshop Adjustment Curve that influences how an image appears on your display (e.g. high contrast, or very flat contrast, or any curve that you imagine… this curve is not applied in Photoshop but transposed into the PiezoDN software to inform the linearization tool of your creative intent when it produces a .QUAD file.[/li][/ol]
If you forge ahead on your own - you will need to rely on the author of the QTR Curves Tool or and the QTR Community that uses the QTR Curves Tool and they are numerous and you will find that some of them are making digital negatives. This is not done because of value. Your hours and learning curve will be steep and long. It is done purely for the satisfaction of using the QTR Curves Tool and knowing you made your own. The standard produced by this tool set are not at the Piezography standard. But the inks you use will give you substantially greater benefits than those using QTR Curves Tool and Epson blacks and color inks to make their negatives. Those benefits include absence of digital artifacts, smoothness, higher acuity, greater shadow and highlight separation, tens of thousands more gray levels.
I hope that we have now adequately explained to you why we believe PiezoDN is a requirement for use with the PiezoDN digital negative system.