turbogps wrote:I am new to the website. Thanks for the interesting info.
a) LE820 question. You mention green/yellow push. Can this be calibrated? looking at the LE820 manual, colour calibration seems to be possible.
It should be possible with the CMS but the optimal picture setting may vary a lot from one LE820 to another LE820. The thing with gamut variations are that they're hard to correct but the CMS system should help.
I didn't do a complete CMS calibration because I think there's a mismatch in writing a consumer review with this "false" approach. The review should tell consumers what they can expect from the TV, not what they can achieve if they're hardcore calibrators.
I also received this question in a few e-mails.
b) General question: You describe black level and clouding/backlightbleeding. What is the difference? Are these factors interconnected e.g. if there is backlightbleeding, then blacklevel cannot be low?
The black level measurement tells us how deep a black level the panel in the TV can achieve. (you can also compare the black level measurement to other TV reviews here on FlatpanelsHD)
The clouding test tells us if light is distributed homogeneously across the panel.
But you're right. If clouding is very bad, black level will also be reduced. Also, bleeding is not constant on the panel. You might experience that bleeding is only visible in one of the corners.
Black level in this corner might 0.08 cd/m2 and 0.05 cd/m2 on the rest of the panel. We have experimented with a graph that tells us the black level on 30 different spots on the panel but in the end I think that a picture tells a better story, and I think that most readers agree.
