Archived posting to the Leica Users Group, 1997/06/11

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Subject: Re: Noncoated filter
From: Dennis Painter <dwp@deltanet.com>
Date: Wed, 11 Jun 1997 23:22:24 -0700

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