Archived posting to the Leica Users Group, 1996/12/01

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Subject: Re: Photographing my TV
From: David Young <youngs@IslandNet.com>
Date: Sun, 1 Dec 1996 16:29:31 -0800 (PST)
 
At 03:19 PM 01/12/96 -0700, you wrote:
  >Anyone know what the minimum shutter speed required to make a picture of my
  >TV w/out the scanning effect? I've been making strange pictures with my son
  >in front of the set and keep getting the raster-scan pattern.
  >ben

North American (NTSC) TV's scan the screen 60 times a second, but each scan
(or field) contains all the odd or even numbered lines. Two fields makes one
complete picture (or frame).  Thus you must shoot at no higher speed than
1/30th of a second, so that the film sees a complete frame.

Hope this helps.
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