Re: fundamental question - monitor profile as working RGB
Re: fundamental question - monitor profile as working RGB
- Subject: Re: fundamental question - monitor profile as working RGB
- From: John Hee Soo Lee <email@hidden>
- Date: Mon, 15 Dec 2003 18:39:29 -0800
Roger,
The definition of "Gray Balance the Monitor with Linear Video LUT,"
should be:
Adjust the monitor so that, desired white-point (correlated color
temperature)
at RGB value white (255,255,255) is same in dark gray / black; lowest
value
measurable by your colorimeter.
This step can be optional since the profile LUT can document
white-point difference across measured gray patches. That's your choice
to make.
But if you want repeatable color from your display devices, it'll be
best to set a calibration standard and stable viewing condition.
-j
On Dec 10, 2003, at 5:29 PM, Roger Breton wrote:
John,
You should state that an important assumption in this process is that
you
choose to leave the gun amplifiers alone resulting the monitor being
calibrated in whathever color temperature it's currently at when you
start
off at step No1, no?
Regards,
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
john hee soo lee wrote his prescription for perfect monitor
calibration:
1. Gray balance the monitor with linear video LUT
2. Measure your monitor RGB primaries.
3. Measure the 255 gray patches (0,0,0),(1,1,1)...(255,255,255) or
subset that is most important.
4. Build a working space profile with the all the data sets: white
point, RGB primaries, and RGB 10bit LUT that describe response curve
of
your monitor.
--
john hee soo lee @ pixar animation studios
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