Re: native white point
Re: native white point
- Subject: Re: native white point
- From: email@hidden
- Date: Mon, 22 Nov 2004 18:03:55 +0200
Thanks Mike,
I have i1 with PM5.
But one more question.
If I already made profile for monitor and changed monitors RGB settings,
should I reset these setting to factory defaults to get native white point?
Does changing RGB settings change monitor white point?
regards,
bebris
"Mike Eddington"
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m Re: native white point
2004.11.22 17:59
What software are you using to create your monitor profile? Most new
software packages for monitor profiling now allow you to select native
white point when creating profiles, but some older versions don't. Monaco
Profiler 4.6 and GretagMacBeth ProfileMaker 4.0 did not offer this as an
option.
Here's one possible way you can measure white point...I'm sure the pro's
will chime in if there is an error in my methodology:
1. Download ColorLab from
http://www.gretagmacbeth.com/index/products/products_color-mgmt-spec/products_professional-cm/products_pm5-publish/products_pm5-publish_sw.htm
2. Use the Spot Measure feature in Logo Color Lab to measure a white patch
on your monitor
3. Display the results in XYZ
4. Go to www.bruclindbloom.com, click on the Calc button and select the CIE
Color Calculator
5. Enter you XYZ values in the appropriate fields and click the XYZ button
to display the Color Temp
The above assumes your spectrophotometer is supported by ColorLab and can
work in emissive mode.
In my case, a white patch on my Eizo CG21 monitor gave XYZ readings of
129.4, 135.3, 140.7, which calculates to a white point of 6136.1 k.
mike _______________________________________________
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