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From: dca@iedl02.UUCP
Newsgroups: net.rec.photo
Subject: RE: Dedicated flashes
Message-ID: <1667@iedl02.UUCP>
Date: Sun, 12-Feb-84 22:41:54 EST
Article-I.D.: iedl02.1667
Posted: Sun Feb 12 22:41:54 1984
Date-Received: Fri, 17-Feb-84 05:37:52 EST
Lines: 21


Close...but no cigar.  One should not be too restrictive when discussing
what the term "dedicated" means.  In some cameras, true, it refers to
a feedback quenching effect generated in the camera from off the film
metering.  Canon doesn't have this but nonetheless it does do other
things beside just set the X-Sync mode.

a) lights a flash ready light in the viewfinder when the flash is
   up to charge (essentially the same as setting X-Sync mode).

b) The speedlight 199a has three power settings each of which requires
   a different aperture setting on the lense.  The ASA of the film is
   set on the flash and the proper aperture is conveyed to the camera
   due to its dedicated circuitry.  Also the 199 has a shutter speed
   overide which allows the use of shutter speeds below 1/60 (on an
   A-1 anyway) with the flash and the flash will compensate accordingly.

Enough said, personally I think dedicated flashes are wonderful things.

To bad it doesn't send the ASA of the film that would certainly be nice
also.