Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "bwbonkers" 
<PeterDLevis@a...> wrote:
 
> Thanks for the info. I have downloaded PM4. I have read Roy's 
readme 
> on using measure tool to linearize QTR curves. To use the Measure 
> Tool I see that you have to create a ReferenceMT.txt file of the 
grey 
> scale tiff that you want to scan. For QTR Roy supplies these.
> 
> Question: How do I create this reference file for IJC 26 step grey 
> scale file ?
> 
> Peter.

You don't need a reference file.  IJC isn't able to read a 
measurement file so there's no point in producing one.  I simply 
followed the instructions to measure the "L" value of each patch 
using the spot option in the measure tool.  These are then entered 
into the table in the linearization screen.  I was a bit concerned 
that the values I had measured were the opposite way round to the 
density readings in the examples (i.e. high L = low density), but the 
linearization process handles this ok.  It would certainly be nice to 
be able to read in a strip of patches, but no doubt this will come in 
due course.  (Are you there, Paul?)

John