I need to ask a favor. I'm struggling with the fangraph method. Maybe just silly again? Figuring the K fangraph is straightforward, but not the CMY. I'm in the 2009 G7 How-to (http://www.idealliance.org/downloads/g7-how-2009-g7-manual). In "3.4 Measuring the P2P Target", the instructions state:
Measure the ND (Neutral Density) values of the K-only gray scale (P2P column 4) and the CMY only gray scale (P2P column 5)
Is "Neutral Density" the same as ISO (Status T) Visual density? Is seems that way since the next paragraph reads :
The target can be measured with spot readings using a hand-held densitometer set to the Black, or Visual channel
So, to me, that much should be clear. Well, on page 12, "3.5 Plotting the Common CMY NPDC Curve", in Figure 3.8, the ND values are listed under the Cyan column. Is this correct? I assume it is. Where I seem to get confused is in the next sentence which reads :
... Use blue ink as the initial CMY sample graph becomes the cyan graph when correcting gray balance.
In other words, the "ND" values, which are also ISO Visual (?) are to be treated as "Cyan" density values? For the purpose of drawing the graph? In other words, is the initial press curve to be drawn based on ISO (Status T) Visual densities? Best / Roger P.S. I'm doing this manually for my students as an exercice in press calibration using the G7 method (I know there is always IDEALinkCurve...).