Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "John Houghton" 
<j.houghton@n...> wrote:
> 
> --- 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

Many thanks for the reply. I'm a little in the dark about using Eye 
One because I have'nt actually used one yet. I'm just trying to get a 
feel for the tool before I purchase one. I do have IJC and was 
planning on buying a densitometer because it seemed so easy to 
measure the patches and enter the values into IJC. However Eye One 
would do so much more for me and in the longterm be better value. 
Hence the questions regarding using it with IJC. I will have another 
look at the help files in Measure Tool for spot measurements.

Regarding my orignal post I have now worked out how to create the 
reference file. If I have read Roy's readme correctly on QTR/Eye One, 
then this reference file can be read by Measure Tool in strip mode 
and then saved as a text file. IJC can import data as a scan or text 
file. If IJC can read this data text file then I think you have your 
wish. It would save having to enter 26 values every time !! 

What do you think.

Peter.