Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 exptools 1/6/84; site ihuxk.UUCP 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