LCD Warm-up
I found this Apple KB article http://docs.info.apple.com/article.html?artnum=25242 which states that some LCD panels used by Apple need to warm up before reaching their "normal brightness". I have never heard of this before. Is this common with all LCD panels?
Comments
On notebooks, that effect is even worse, so don't try to "save" battery life by turning the display on and off every few minutes. Decrease the brightness instead.
Btw, the CRT monitors had to warm up as well, as you might remember. And when using colour calibration devices, you need to leave the display on for at least 30 minutes before running the calibration software.