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Arfa Daily wrote:

The LCD only filters light from the backlight. If you don't have a full
spectrum white in the first place the you can't expect decent colour.
White LEDs aren't quite there yet are they?

Archie


Absolutely true, except that this particular TV doesn't use white LEDs in
its 'revolutionary' backlighting scheme. It uses small RGB arrays, which
is
why I was questioning whether there was any control over the individual
elements in each array, such that the colour temperature of the nominally
white light that they produce, could be varied. Which would then, of
course,
have a corresponding effect on the displayed colour balance. It just
seemed
to me that given they have gone to the trouble of using RGB arrays,
rather
than white LEDs, the reason for that might have been to get a full(er)
spectrum white.

Arfa

colour temp can be controlled using the LEDs or the LCD, I'm not sure
it makes any big difference which one.

RGB LEDs would give the same white as a triphosphor&uv white LED, but
with more colour control. The standard 2 colour white LED would be
useless on a 3 channel display. And fwiw bichromic white LEDs have
huge colour balance variation, way outside of whats acceptable for a
display.


NT

Which is why, given that they've put these LEDs under at least some kind of
control in order to implement their (claimed) enhanced black reproduction
scheme, that I was questioning whether the scheme maybe allowed for a degree
of user intervention under the guise of "tint" or whatever, and which might
have accounted for why on this particular TV - the only example that I've
seen on and working so far - the flesh tones were so poor compared to Pan
and Sony offerings in the same display stack, showing the same picture. I'm
trying to get a handle on why a company with the products and reputation of
Sammy, are a) using advertising terminology that appears to be questionable
in the context that it appears, and b) producing a set, claiming it to be
the dog's ******** of display technology, which does not appear - to my eye
at least - to be as good as their traditionally CCFL backlit offerings, or
those of other manufacturers.

I saw the latest all singing and dancing LCD HD Pan, just released, in my
friend's shop yesterday. Uses conventional CCFL backlighting. Not as thin as
the Sammy, but getting there. Apart from the usual slight gripes that you
could direct at any LCD panel when examined closely, the picture was quite
stunning, and the colour rendition was as close to 'perfect' as you could
reasonably expect. Certainly, flesh tones *appeared* accurate, but I accept
that is subjective. Anyway, whichever-whatever, more accurate than they
appeared on the LED backlit Sammy ...

Arfa