OK I have my RS1 dialled in well for greyscale/gamma and gamut but I think the colour brightness (Y) is well off.
I would appreciate help with the calculations. From the calibration sticky I can get the colour brightness values by dividing the coulor values of RG and B in to a simlar white field ie 75/100% ire.
Now I am taking the white measurement of Y from the 100% white field as measured in the 'Greyscale' measurements and the Y value in the 'saturation' measurements and dividing one by the other.
I would appreciate a confirmation thet this is the correct procedure.

A gratefull newbie :)

Measure 100%, then whatever the Y is for that, then use that percentage of the respective color to that Y..

For example..if Y for 100% white is 100, then Red being that it should read 21% Y of the 100% of the white, then your Y will be 21 for Red..hope that makes sense..

Measure 100%, then whatever the Y is for that, then use that percentage of the respective color to that Y..

For example..if Y for 100% white is 100, then Red being that it should read 21% Y of the 100% of the white, then your Y will be 21 for Red..hope that makes sense..

Thanks Rich. Yes I understand how to work it out, I just neeed to make sure I am using the correct numbers from HCFR. The white Y value I am using is the 100% white value ie the last of the greyscale measurements and the Y value of the primaries.

I want to make sure as my calculations seem to put the primaries well below what I am expecting.

Am I correct to select the xyY values for this ?

Cheers

Thanks Rich. Yes I understand how to work it out, I just neeed to make sure I am using the correct numbers from HCFR. The white Y value I am using is the 100% white value ie the last of the greyscale measurements and the Y value of the primaries.

I want to make sure as my calculations seem to put the primaries well below what I am expecting.

Am I correct to select the xyY values for this ?

Cheers

It depends on what percentage field/window you are using to measure the primaries. If you are using 75% fields for primary measurement, then you should use 75% gray for calculation. Likewise for 100%. If you use 100% gray (white) with 75% primary measurements, then the primaries will come out low.