Yahoo Groups archive

Digital BW, The Print

Index last updated: 2026-04-28 22:56 UTC

Message

Re: QTR: relinearizing an existing curve

2010-04-04 by igor_mountain

Yes, it can, QTR supports both.  

Igor

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "William" <agiprop@...> wrote:
>
> Hi,
> 
> Can the procedure below be done with a densitometer? So the LINEARIZE="..." data will be in density not LAB?
> 
> Jon
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "David Wroblewski" <dawroblewski@> wrote:
> >
> > Roy, could you confirm that this is the right procedure for
> > re-linearizing a curve that already has LINEAR="..." data,
> > such as the one Carl sent me this afternoon:
> > 
> > (1) Edit the .txt file and comment out the existing LINEARIZE="..."
> > line. Verify CALIBRATION=NO.
> > 
> > (2) Process and install the curve with quadprofile/quadcurves
> > scripts.
> > 
> > (3) Print out 21Step.tif using the curve of interest
> > with Output Mode=Quadtone Rip, *NOT* Quadtone Rip Calibration.
> > 
> > (4) Measure the patches and add result to the .txt file as a 
> > LINEARIZE="..." data, then reprocess and install the result, 
> > 
> > (5) Reprint 21Step.tif to make sure you got a sensible result.
> > 
> > Thanks,
> > David
> >
>

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.