Hi Sandy
The Linearize= command takes either L values or the log density values.
The goal is always linear L-values so densities are automatically converted.
It handles regular prints with the order white to black, and dig negatives
with the order black to white.
So for negs with density its like:
LINEARIZE="1.9 1.8 .... 0.2 0.1"
Roy
On Wed, Jul 19, 2017 at 8:00 PM, sanking@... [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com> wrote:
For some years I have been linearizing my digital negatives with an iOne spectrophotometer and the Linearize command. I invert the 21 step wedge file in the iOne folder, make a positive print in my process, then scan the step wedge to create a .txt file. I then drop the data from the .txt file on the QTR-Linearize data tool and, if all has gone well, get two sets of Linearize numbers, one for positive prints, a second for digital negatives. I enter the data for the digital negative and this has worked great for me.
What is the correct way to use log density measurements made with a reflection densitometer with the Linearize command. Should I enter the log density values in the Linearize line from low to high, or high to low? I have tried both ways but seem to be getting inconsistent results in that sometimes the resulting quad file looks like a quad file created with the iOne, at other times it appears that the curve is reversed.
Sandy