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Re: Calibrating Engine RPM

Subject: Re: Calibrating Engine RPM
From: G. Innes John G. Innes <rsenzer@primenet.com>
Date: Mon, 6 Oct 1997 20:25:09
Duncan McFadyean wrote:
> 
> Using a video camera to check tacho. accuracy is supposed to work very
> well. This is on the basis that the shutter speed in a video camera is
> timed at 1/500 sec. ...

Careful, do not assume all have 1/500th second shutter speed. According
to the July 1997 catalog from B&H Photo/Video in New York (also online
at www.bhphotovideo.com), all new Sony Video Cameras have multiple
shutter speeds, and Panasonic PV-A207 has variable speeds between
1/100th and 1/10,000th of a second. Descriptions of some other brands of
video cameras mention "Sports mode", which is a term used to describe
one of the Sony shutter speed settings.

John G. Innes


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