Laukiu YZF ir Struktur "puolimo" apie faktus:

"There has always been a large dependence by some forum members and 
enthusiasts on cd/m2 black level figures within reviews and trying to 
compare these on forums, where the measuring equipment, method and 
surroundings have always made these types of measurements useless in any 
kind of comparable manner. The results really are based on certain factors 
that for us are never as repeatable or properly measurable to make them a 
useful tool for readers to use. You cannot take measurements we make here 
with a K-10 meter and then compare them to readings taken by say a Spyder 
III in a different country. There are just too many factors that make that 
approach bad practice in terms of imaging science and that’s before we take 
into account that doing these measurements on, say, an LCD that switches it’s 
backlight off at 0IRE, makes the measurements pointless. Mind you that hasn’t 
stopped a few from complaining about the lack of such measurements in our 
reviews and while we will start to mention our results, they will not be 
used for marking purposes or any other evaluation process. We do not 
recommend trying to compare black level readings with any other source, be 
that another review elsewhere or measures taken by forum members. The only 
real comparable difference you could take as being minimally accurate is by 
the same reviewer using the same equipment, method and conditions.

So, with that important disclaimer out of the way, the VT30 measured with 
our Klein K-10 in dark surroundings and calibrated mode we got 0.02 cd/m2 at 
0IRE and 79.35 cd/m2 at 100IRE (approx. 3,967:1 on/off) using standard 
window patterns from our Sencore VP401. Our 8 month old VT20 measured 0.04 
cd/m2 at 0IRE and 75.12 cd/m2 at 100IRE calibrated (1878:1 approx on/off). 
Our 2 year old Pioneer LX5090 Kuro measured 0.03 cd/m2 at 0IRE and 110.1 
cd/m2 at 100IRE calibrated (3,670:1 approx). Ansi-contrast measurements on 
the Pioneer were 0.04 cd/m2 black and 85.4 cd/m2 white averaged results, 
with the VT30 managing 0.03 cd/m2 black and 72.4 cd/m2 white averaged 
results."

Šaltinis: 
http://www.avforums.com/review/Panasonic-VT30-TX-P50VT30-42VT30-50VT30-55VT30-65VT30-3D-Plasma-Review.html