Hi Dave,

I got the equations from the excellent Bruce Lindbloom's site
http://brucelindbloom.com/Eqn_T_to_xy.html

Many people are using that, which I think comes from CIE, but I cannot  
locate any reference. If you have an extended range equation set I  
will be glad to include it in the code.

Regards
Marti


Dave Thorup <li...@kuwan.net> escribió:

> I'm finding the valid range for cmsWhitePointFromTemp(...) to be a  
> little odd:  4000K-25,000K. 25,000K seems far too high for  
> "ordinary" usage (but that's fine) while 4000K isn't low enough.  
> Especially since the documentation talks about temperatures lower  
> than 4000K:
>
>> Higher color temperatures (5,000 K or more) are cool (bluish white)  
>> colors, and lower color temperatures (2,700–3,000 K) warm  
>> (yellowish white through red) colors.
>
>
> So is there any chance of getting the valid range lowered to  
> something like 2500K?
>
> Thanks,
>
> Dave
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