Archived posting to the Leica Users Group, 1997/06/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]User Surachai V. at UNESCAP4 is not defined Original text follows ---------------------------------------------- Received: from gatekeeper5.un.org by mail-in2.un.org (SMTPLINK V2.11.01) ; Thu, 12 Jun 97 03:07:05 EST Return-Path: <owner-leica-users@mejac.palo-alto.ca.us> Received: by gatekeeper5.un.org; id AA285258421; Thu, 12 Jun 1997 02:53:41 -0400 Received: from mejac.palo-alto.ca.us(192.147.236.1) by gatekeeper5.un.org via smap (V3.1) id xma028323; Thu, 12 Jun 97 02:52:26 -0400 Received: by mejac.palo-alto.ca.us id AA06415; Wed, 11 Jun 97 23:15:54 -0700 Received: by mejac.palo-alto.ca.us id AA06409; Wed, 11 Jun 97 23:15:50 -0700 Received: from dennis (ana1056.deltanet.com [199.171.191.56]) by mail2.deltanet.com (8.8.5/8.8.5) with SMTP id XAA22935 for <leica-users@mejac.palo-alto.ca.us>; Wed, 11 Jun 1997 23:15:19 -0700 (PDT) Message-Id: <339F95A0.6A60@deltanet.com> Date: Wed, 11 Jun 1997 23:22:24 -0700 From: Dennis Painter <dwp@deltanet.com> X-Mailer: Mozilla 3.0 (Win95; I) Mime-Version: 1.0 To: leica-users@mejac.palo-alto.ca.us Subject: Re: Noncoated filter References: <199706120543.WAA29261@axionet.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-leica-users@mejac.palo-alto.ca.us Precedence: bulk Reply-To: leica-users@mejac.palo-alto.ca.us Jacques Bilinski wrote: > > > >uncoated. Is it less important for a filter to > > >be coated than for a lens? > > > > Take it back. It will be the first surface to greet the incoming light > > rays. If it's uncoated, a lot of scattering, reflecting, and other ugly > > phenomenon will take place. > > > It seems to me that any light reflected from the first surface of the > filter will simply be reflected back to the subject and therefore not > degrade the picture. I can understand why the surface of the filter closest > to the lens benefits from coating. Am I missing something? I would expect it to lower contrast. Dennis - -- Experience is a tough teacher. It gives the test before the lesson. - -unknown