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[OM] Re: E-1 bits & parts advice

Subject: [OM] Re: E-1 bits & parts advice
From: Philippe Dambournet <zuikomane@xxxxxxx>
Date: Sat, 5 Jan 2008 01:11:42 -0600
The price of excellence, I take it... most expensive sandwich I've  
heard of so far -- but what's the point of a filter that would fall  
apart?

Phil

On Jan 04, 2008, at 20:35, Listar wrote:

>
>> I think I know what your next question will be - what's the extra  
>> cost of
>> a
>> kaesemann filter giving me?
>>
> Here's how it was explained to me. Polarizing filters are made by
> sandwiching a layer of plastic polarizing material between two thin  
> pieces
> of glass, as it is impossible to make polarizing glass. The sandwich
> delaminates over time, a process accelerated by heat and humidity. The
> Kaesemann filter adds an extra step to the manufacturing and the  
> cost by
> sealing the edge in some special way.
>
> For whatever reason, there are supposed to be only a few places  
> that can
> make these polarizing filters, and that's why Tiffen's are made in  
> Japan and
> bear a ressemblance to other brands.
>
> Bill Pearce


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