In article ,
William Sommerwerck wrote:
Oh, but there was. The original delta gun shadow mask tubes used the
correct NTSC phosphors. Which gave a pretty pure red. The rot really
came in with PIL tubes which used a very 'orange' red phosphor simply
because it allowed a brighter picture. And that had real implications
to flesh tones. Took many years before that was corrected.

I would almost bet my life that this is absolutely backwards -- it was
the original phosphors that were orangish, improving only with the
rare-earth phosphors of the early '60s. (I remember Sylvania's radio
ads.)

Colour TV didn't arrive in the UK 'till the late '60s. PIL tubes were some
years after that.

In fact, I'm pretty certain that most of what's being posted about color
TV and color analysis/reproduction is utter bilge. But I don't have a
comprehensive understanding of this material (it's not easy), so I'm
pretty much keeping my mouth shut.

Quite a bit of what I'm saying comes from working in TV production -
although I'm on the sound side. But hear plenty from those who work on the
vision side of things. ;-) And it was certainly the case that Grade 1
picture monitors continued with delta gun tubes long after PIL were
introduced domestically - and stuck with the original NTSC phosphors. As
this was the standard the cameras were 'calibrated' to.

--
*Can fat people go skinny-dipping?

Dave Plowman London SW
To e-mail, change noise into sound.