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QTR-Quadtone RIP

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Message

Re: ColorMunki and QTR?

2008-04-12 by Keith Cooper

Hi

After realising I could actually do some other things with the CM...

I've been trying it out with some of the QTR Eye One targets and have a
few notes that might be of help for anyone looking to use the data from
the CM

1 If you use the standard targets, they are too small for easy use with the
CM. If you expand the 21x4 target so that it comfortably fits on a single
A4 sheet (with at least an inch before and after the patches start) then it
scans very easily in scanning mode in ColorPicker

2 The randomised set of targets often miss the first/last patch at 30%  I
swapped them with the 45% patches and readings were much more accurate.

3 You can sort a set of patches (say a single 21 patch set) into luminosity
order. However if you export the data set then the values in the file are still
in the original scanned order. If you take all your measured patches (sorted)
and place them in a new project, and export this (as CSV) then you get the
values in sorted order

4 If you do this sort then of course you lose any crossovers which the
profile generator would catch.

5 The CSV file contains 'names' for colours, so with my rather poor K80 on
plain paper, the full 21 patches were given the following names (randomised
order 30/45 swapped): 

Bluish Gray
Dark Purplish Gray
Bluish White
Light Bluish Gray
Dark Grayish Green
Light Bluish Gray
Grayish Purple
Dark Grayish Brown
Light Bluish Gray
Dark Gray
Purplish White
Purplish Gray
Dark Grayish Blue
Light Purplish Gray
Dark Purplish Gray
Bluish White
Pale Blue
Dark Gray
Purplish White
Purplish Gray
Dark Grayish Brown

If anyone wants a full CSV measurements file to play with (it does have
non-linearity in it) then drop me a mail directly

I suspect that a 'ColorMunki version' of the Eye-One folder should be
quite feasible...

bye for now

Keith Cooper

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