QTR-Quadtone RIP

Great and promising new program for my alt photography palladium 
printing. Question: I'm doing my first linearization curve. I tried the 
L values from a scan and started as per instructions in the upper left 
with the L value for the lightest patch (95%). I continued through the 
21 steps ending with 4%. I entered each value as an absolute value, but 
when I tried to save, I got the error message that because the values 
were not increasing (well, I wasn't using the densinometer). So how do 
I enter these Lab color values?
Thanks,
Jim

First of all: were the data you were putting actually steadily 
increasing? If not, either your ink setup or your readings are not 
correct. You should fix that first then. If you readings are steadily 
increasing, you still may get that error message if the increments are 
rather small. This happens on a regular basis with 51 step wedges. But 
you're using the 21 step wedge, which is the way to go. So my 
assumption would be that your ink setup/gray curve parameters are not 
good enough in the first place. One should have a somewhat linear L 
curve prior to the linearization. Linearization can't fix errors in the 
ink setup/cray curve parameters. Tom Moore's user guide should be of 
help here. 

Joost


 
--- In QuadtoneRIP@yahoogroups.com, "jcmanleyy" <jcmanleyy@...> wrote:
>
> Great and promising new program for my alt photography palladium 
> printing. Question: I'm doing my first linearization curve. I tried 
the 
> L values from a scan and started as per instructions in the upper 
left 
> with the L value for the lightest patch (95%). I continued through 
the 
> 21 steps ending with 4%. I entered each value as an absolute value, 
but 
> when I tried to save, I got the error message that because the values 
> were not increasing (well, I wasn't using the densinometer). So how 
do 

> I enter these Lab color values?
> Thanks,
> Jim
>