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From: farren@well.UUCP
Newsgroups: net.misc,net.tv
Subject: Re: NTSC vs. PAL (525/30 vs. 625/25)
Message-ID: <540@well.UUCP>
Date: Thu, 23-Jan-86 16:56:40 EST
Article-I.D.: well.540
Posted: Thu Jan 23 16:56:40 1986
Date-Received: Fri, 24-Jan-86 22:26:14 EST
References: <215@unh.cs.cmu.edu> <873@vortex.UUCP>
Organization: Whole Earth Lectronic Link, Sausalito, CA
Lines: 17
Xref: watmath net.misc:9197 net.tv:3911

In article <873@vortex.UUCP>, lauren@vortex.UUCP (Lauren Weinstein) writes:
> But 625/25 sets flicker quite noticeably even on relatively small
> areas of solid color.  The difference between 25 frames and 30 frames IS
> significant to the human eye.

   Were you looking at one of these TV's in Europe, where the line freq.
is 50Hz, or here?  I had occasion to do some work with a Thompson CSF home
computer, rigging up a 110 to 220 converter for it, and found that if I
tried to watch the PAL screen with ANY 60Hz lighting source nearby, the
10Hz "beat" between the 60Hz lights and the 50Hz screen killed me.  when
I turned off ALL of the lights in the office, the flicker disappeared, and
the display was quite nice.

-- 
           Mike Farren
           uucp: {your favorite backbone site}!hplabs!well!farren
           Fido: Sci-Fido, Fidonode 125/84, (415)655-0667