Archived posting to the Leica Users Group, 2004/01/12

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Subject: Re: [Leica] transmission/reflection ideal on rf mirrors
From: Patrick Jelliffe <pbjbike@yahoo.com>
Date: Mon, 12 Jan 2004 12:34:25 -0800 (PST)

Javier,

This shop does resilvering and may be willing to share
a trade secret or two with you:

http://www.crrluton.co.uk


Patrick


- --- Javier Perez <summarex@lycos.com> wrote:
> Hey everyone
> I asked this before on other lists but have gotten
> no answer It's one for the psyco-optics geeks mind
> you.
> 
> I'm going to be re-mirroring the rf on a Paxette and
> got to wondering what the ideal
> trannsmission/reflection ratio for the semi silvered
> mirror might be. I went into the project assuming it
> was 50/50. But have since started wondering if the
> overall finder might be too dark. The other option
> might be 70/30, but the second image  might not show
> upo well. Anyway, was wondering if there was an
> accepted best ratio for this. I'm sure there must be
>  after a few hundred years of optical rangefinder
> development. Any ideas or comments are very much
> appreciated
> 
> Javier
> 
> 
>
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