Quote:
Originally Posted by Dialhot
Old TV sets had problems with extrem values as picture too dark or too bright. That is why the standard CCIR601 was decided. As on these old screens, the material wasn't black indeed but very dark green, I think this problem wasn't a real one.
Now, as there are TV set with perfectly dark screen, that is an other question.
Same for limitation in high value : the problem appears only on weak electronics (the image seems to "pump" when you have a very bright area to display). In 2003, all TV set can handle very high luma.
I think Jorel can say something more on this point : that is his everyday labor
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exact Phil,
i can't find better words.
the old tv "delta tubes" have extreme bright limitations
and show the very high light as "neon lights".
then if one matiz is changed,all the colors change too cos
the white is the result all basic colors in tv
(59%green,30%red and11%blue = pure white.
pure white means.....
"not so pure"
the "intention" of the limiter filter is special for this cases.
the instable linearity from black to white change the matizes
and the "background" grey of the luminance
can't show the light grey or black cos the "cannons"
don't do the perfect job.
in the new tvs is different and we got more bright
with less "miliamperes" and better balance betwwen the cannons.
sorry my poor english.
ps:
"instable linearity" ?
ahhh,you understand what i mean.