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Path: utzoo!watmath!clyde!cbosgd!ihnp4!zehntel!hplabs!nsc!voder!gino
From: gino@voder.UUCP (Gino Bloch)
Newsgroups: net.rec.photo
Subject: Re: Multiple exposures ??
Message-ID: <552@voder.UUCP>
Date: Fri, 7-Dec-84 16:14:25 EST
Article-I.D.: voder.552
Posted: Fri Dec  7 16:14:25 1984
Date-Received: Mon, 10-Dec-84 01:39:06 EST
References: <41600001@hpfcms.UUCP>, <1539@drutx.UUCP> <4257@cbscc.UUCP>
Organization: National Semiconductor, Santa Clara
Lines: 14

[expose this line to the bug]

> To make a multiple exposure, what settings do I use?
The general rule is to use 1/n the exposure for each shot of an n-fold exposure.
If n is 2, that means close the lens 1 stop, or double the shutter speed, or
double the ASA/ISO setting.  For programmed automation, the only alternatives
are the film-speed change and the exposure compensation knob (set that toward
UNDEREXPOSURE).  Remember that `n' is linear and `stops' are logarithmic.
Remember to return everything to normal when finished.

Sometimes you may want to break the above rules for esthetic reasons.
-- 
Gene E. Bloch (...!nsc!voder!gino)
Mr Humility