Originally Posted by Zimbalo
Thanks Ted, I know perfectly well that it is so, but my target for plasma is not to get more cd/m2 as possible for Kuro's, but to get a good dynamic range without side effects.
Otherwise, calibrating at higher contrast levels the dynamic range will have no way to breathe properly ... In fact the ABL intervention crush the high levels of luminance making indistinguishable from each other (of course this is seen in scenes with high-high APL), causing sunburns and unwanted changes in color.
Hello, when you have some free time, do the following test:
Display a full field 100% White Pattern; measure it and track down your peak luminance level using your KURO with contrast level @ 40,39,38,37,36,35,34.
Later do the same by measuring again you peak white with the above contrast settings but now by using a 11.11% Window Pattern.
After that compare the luminance differences, you will see that with full field patterns the difference are very small or it's the same luminance level but will 11.11% the differences are bigger.
Look these screen captures below:
I used LightSpace CMS to take Quick Profiling measurements to generate these RGB Separation Charts.
The definition of 'good RGB separation' is when the grey scale is an exact sum of the individual RGB values, combined with colour channel independence, where changing the value of one colour channel has no effect on the other two colour channels - there is no cross-talk between the colour channels. Please note this is not a simple RGB/3 calculation, and can vary for each and every individual grey scale value.
You need 21-Point WRGB Readings to generate this RGB Separation Chart, it's different from RGB Balance Chart that requires only 21-Point Grayscale.
These are pre-3D LUT Profiling reports, I took them to see if by reducing the peak luminance it improves the channel separation and less crosstalk. If the display will be out of 'gas' it will be visible using these charts.
By viewing these charts...as closer to Black line are the RGB lines then it's better performance. As you see there very small changes if you count the meter repeatability / display stability over the time.
There is no improvement by reducing the peak to 120 cdm/2 since the panel can output 135 cd/m2 with no problem.
Contrast Setting @ 31, Peak Output ~120.9 cd/m2
Contrast Setting @ 32, Peak Output ~124.8 cd/m2
Contrast Setting @ 33, Peak Output ~128.1 cd/m2
Contrast Setting @ 34, Peak Output ~131.7 cd/m2
Contrast Setting @ 35, Peak Output ~135.0 cd/m2