Originally Posted by sotti
xy, u'v', U*V* or even a*b* are all equally tricky to do CMS with. What you want is actual Hue and Saturation values, which of course we give you.
You can see our Quick View of gamut has RGB balance, directional hue, saturation and luminance indicators and x,y,Y values to help you adjust whatever kind of CMS you have.
That looks very nice - too bad I cheaped out and got the colormunki display instead of the i1
First, thank you for your informative response, even to someone who is not a customer of your software, respect.
I've figured a method for the above with HCFR which is less elegant, but should work, and which I will post here in case anyone else has the same question I had.
There are a few colorspace calculators online, here's an example - http://www.easyrgb.com/index.php?X=CALC#Result
If all you have is RGB controls in your CMS, in HCFR what you can do is go ahead and measure your primaries and secondaries and white. In the datatable screen you now have your xyY measurements and your dE and delta luminance amounts calculated against xy reference and your white measurement and reference gamma.
Click "editable data" at the top.
Change each of the primary and secondary color xy coordinates in the top box based on their rec709 reference positions
rec709 references (Click to show)
Red primary: x=0.640 / y=0.330
Green primary: x=0.300 / y=0.600
Blue primary: x=0.150 / y=0.060
Yellow secondary: x=0.419 / y=0.505
Cyan secondary: x=0.225 / y=0.329
Magenta secondary: x=0.321 / y=0.154
Then in the Y coordinate, adjust the measured Y value by your "delta luminance" to get your target Y and input that as well. Now you should have deltaE = 0 and delta luminance = 0 in your primary and secondary measurements screen.
Uncheck "editable data" and click one of the colors in the table. The box in bottom left will now have your target RGB amounts (among other information). Put a pattern up and go into free measure mode in HCFR and adjust your RGB cms controls so that the RGB free measurements match the RGB reference you just calculated.
Certainly not as easy as what was posted above but it should work for the rest of us cheapskates out there