Originally Posted by HDTVChallenged
: So in other words you're saying that the yellow sub-pixel is *not* being "fired" when white is being displayed? Just the R,G, and B sub-pixels? Again, having trouble following your logic.
: A spectro will include *everything* it sees (including the yellow) in the calculation of "white." There's nothing special about white ... or yellow.
: All I'm getting from your statement translates to 'Sharp completely broke the HDTV/R.709 color system, therefore it must be the (colori)meter's fault that it doesn't see the Quattron "correctly."'
I give up ...
-- The yellow pixel is advertised as adding to brightness.
The phosphor on the blue LED has a lot of yellow wavelength light,
so it is exploited in combination with the blue light. The yellow is not
controllable from the white temperature adjustments -- which means
other adjustments have to pivot around its output.
-- Ok, you kill off my theory of what goes wrong when
guys with colorimeters seek out the lowest (reddest) setting and
then remove maximal blue and still complain that their readings are
too high on blue, despite having obviously trashed the white into the
yellow and the fleshtones into the green. What is your theory of why
this is happening? Saying that the yellow wavelength is foreign to a
RGB program is nothing radical. Ok, it's Sharp's 'fault' for using a
color that colorimeter makers do not acknowledge.
The tail is wagging the dog here, with calibrators telling manufacturers what
to do with their research and the materials available on the market.
It is shrewd to use yellow to counteract the blue of the LED, but it
would be better to have a balanced backlight, in my opinion.
Meantime, what do you think is driving the colorimeters crazy about
the Sharps? If there were that much excess blue in the picture, it
would be obvious. Going into a BestBuy, the Quattrons are no more
garish blue than all the other LED-backlit LCD screens. Why does the
colorimeter say otherwise?
-- Sharp has done little more than exploit the yellow
phosphor to counteract the industrial-strength blue LED to give some
brightness boost. The primaries are NOT outside the norms by any
significant amount. They had promised to move the green deeper
into the colorspace and use yellow to compensate, but the blue LED
has scotched that idea for now. Instead, yellow merely counteracts
blue. But the colorimeter doesn't see it, or so it seems.
Meantime, I got my set looking quite splendid, and shared my
settings far and wide to overwhelming acclaim (thank you, thank you) and I'm really just interested in your idea of what is going wrong
with the calibration tools on these sets 5 years into their existence.
The snark, I can do without...