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From: dsg@mhuxi.UUCP (David S. Green)
Newsgroups: net.rec.photo
Subject: Re: \"Match-needle\"
Message-ID: <324@mhuxi.UUCP>
Date: Wed, 22-May-85 23:52:10 EDT
Article-I.D.: mhuxi.324
Posted: Wed May 22 23:52:10 1985
Date-Received: Fri, 24-May-85 02:23:52 EDT
References: <2029@decwrl.UUCP> <10473@brl-tgr.ARPA> <577@sfmag.UUCP>
Organization: AT&T Bell Laboratories, Murray Hill
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> 	If the aperture is changed, the camera will get more or less
> 	light in thru the lens and will require a shorter or longer
> 	exposure, accordingly, to properly expose the image.

What you have described is a sub-set of match needle called
"stop down" match needle.  If the lens is coupled to the exposure
meter there is no need to stop-down to take a reading unless you
have filters in front of the lens and you don't know how to set
the ASA dial for filter factors.
BTW, on a historical note, match needle originally referred to hand-
held exposure meters.  SLRs are not the be-all and end-all of photography.