Archived posting to the Leica Users Group, 2001/02/27

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Subject: Re: [Leica] Filters and Lens Testing
From: Mark Cohen <markc@binaryfaith.com>
Date: Tue, 27 Feb 2001 11:42:51 -0800 (PST)

So, where is that thread on DOF when we need it? ;)

*ducks*

- -Mark

On Tue, 27 Feb 2001, George Lottermoser wrote:

msmall@roanoke.infi.net (Marc James Small)2/25/016:07 PM

> and the cost of my Leica gear is a burden on me -- so why
should I then
> deliberately degrade the performance of wonderful lenses?

Isn't it fairly wide and accepted optical knowledge that adding
air-glass surfaces to the light path reduces contrast? 35 years
ago, my first reading of Ansel Adams put that in my head; along
with, only use filters when you need their effect to achieve your
intention.

George




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Mark Cohen 	(BALUG LHSA AFA)				
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