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From: bl@hplabsb.UUCP
Newsgroups: net.movies
Subject: Re: 3D movies on TV
Message-ID: <3106@hplabsb.UUCP>
Date: Mon, 14-Oct-85 13:48:33 EDT
Article-I.D.: hplabsb.3106
Posted: Mon Oct 14 13:48:33 1985
Date-Received: Tue, 15-Oct-85 20:00:57 EDT
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Organization: Hewlett Packard Labs, Palo Alto CA
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> The original article implied that the movie had been shown on TV in 3D. In
> order to do this the original movie must have been shot in b&w or the print
> must be transmitted in monochrome as the process used (at least here in 
> Portland) alternates each frame from the left and right film using a red
> and green filter. A pair of glasses using red and green lenses are used to
> separate the images. Obviously a color TV set is required.

It's not necessary to alternate frames between the left and right films.  The
two prints can be broadcase simultaneously, one in green and the other in red.
However, it would be awful to watch on a B&W TV.

BTW, let's not forget the totally bad 3D movie from two years ago, "Parasite".
This was so bad that even the 3D part was backward!  One had to wear the
polaroid glasses upside down to see the 3D effect.