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Path: utzoo!watmath!clyde!burl!ulysses!mhuxj!ihnp4!ihuxk!rs55611
From: rs55611@ihuxk.UUCP (Robert E. Schleicher)
Newsgroups: net.rec.photo
Subject: Re: Cold Weather Photography
Message-ID: <763@ihuxk.UUCP>
Date: Thu, 27-Sep-84 14:26:24 EDT
Article-I.D.: ihuxk.763
Posted: Thu Sep 27 14:26:24 1984
Date-Received: Fri, 28-Sep-84 07:07:34 EDT
References: hou2d.486 <1348@browngr.UUCP> <391@voder.UUCP>
Organization: AT&T Bell Labs, Naperville, IL
Lines: 11

The problem with cameral lenses fogging when brought out in the cold
IS still a situation where dew forms when warm air hits a colder object.
In this case, the warm air is the air inside the camera, and/or between
the filter and lens, or between the lens and filter.  The solid parts of the
camera (metal or plastic) cool off quicker than the air does, resulting in
condensation.  This is why the worst condensation is often on the INSIDE
of the lens, or inside a filter or lens cap.  If you could put your camera
in a vacuum and then bring it into the cold, there'd be no problems.

Bob Schleicher
ihuxk!rs55611