[argyllcms] Re: Low brightness got even lower
- From: Nikolay Pokhilchenko <nikolay_po@xxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Fri, 27 May 2011 17:02:13 +0400
Wed, 25 May 2011 22:18:52 +0200 Christophe wrote:
Hi,
after editing pictures on my Thinkpad R60 I've been noticing that the
pictures look quite different on other displays. So I got myself a DTP94
and calibrated my monitor using dispcalcgui and argyllcms. I didn't
touch any settings but the color temperature (6500 K) and the gamma (2.2).
I'm quite pleased with the results, I know calibration won't turn the
display into a magical device. Still I'm a bit unhappy about the
decrease in brightness, as it was already quite low.
What would you suggest? Is this mainly caused by the change of color
temperature?Yes, You are right. There is only one way to change temperature for
such displays - decrease the brightness of one or 2 channels. When requested
color temperature is differ from native color temperature of display, the
brightness fall will be significant. It seems is Your case.
Native temperature:
White Correlated Daylight Temperature = 4802K, DE 2K to locus = 6.5
Calibrated temperature:
White Correlated Daylight Temperature = 6420K, DE 2K to locus = 1.2
If You shouldn't compare the image on screen with print in controlled light and
You work at only one display at a moment, there is no particular need to choose
non-native temperature for calibration. Try to use -t key for dispcal without
the numbers. If the temperature after calibration to native become too warm,
You can choose higher temperature, 5000K for example. This way You can find the
balance between warmness and brightness.
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