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From: doug@terak.UUCP (Doug Pardee)
Newsgroups: net.misc,net.tv
Subject: Re: NTSC vs. PAL (525/30 vs. 625/25)
Message-ID: <1025@terak.UUCP>
Date: Mon, 27-Jan-86 19:40:14 EST
Article-I.D.: terak.1025
Posted: Mon Jan 27 19:40:14 1986
Date-Received: Sat, 1-Feb-86 03:30:28 EST
References: <215@unh.cs.cmu.edu> <873@vortex.UUCP>
Organization: Calcomp Display Products Division, Scottsdale, AZ, USA
Lines: 24
Xref: watmath net.misc:9240 net.tv:3938

> In the mid-60's when NTSC color was becoming popularized here in the
> U.S., there were indeed serious color control problems.  The need to
> adjust the flesh tones away from purple or green using the "tint" and
> "color" knobs was frequent and delicate.  HOWEVER, the main reason
> for this problem was lack of accurate color references and stability
> in the broadcast and transmission systems used at that time.  As the
> years went on, color stability improved massively, until now, as far
> as I'm concerned, ongoing manual color adjustments are no longer required
> on modern NTSC receivers.

This is due to improvements in the "modern NTSC receivers".  The
designers of these marvels have found some clever ways to deliver a
satisfactory color image from wildly varying inputs.

I had to search for quite a while to find a set which didn't have a
full-time color-correction circuit (I mainly wanted to display computer-
generated images, and I didn't want them "fixed up").  Finally found
one made by RCA.  If I use it to watch broadcast TV, I have to keep
my fingers on the saturation and tint knobs.

The tint and saturation excursions aren't quite as extreme as I recall
from the late '60s, but they're still well beyond "acceptable".
-- 
Doug Pardee -- CalComp -- {hardy,savax,seismo,decvax,ihnp4}!terak!doug