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Re: [OM] Film holders for Chromega 4x5

Subject: Re: [OM] Film holders for Chromega 4x5
From: "Brian Swale" <bj@xxxxxxxxxxxxxxx>
Date: Sun, 06 Jan 2013 05:49:04 +1300
Thinking about Ken's quest for absolute stability for his enlarger.

I remember back in the day reading either Pop Photography or Modern 
Photography, and they showed pics of their lens testing lab somewhere in 
New York city with all its vehicular  traffic and similar vibration-creating 
activity.

I think it was in a basement (ie close to Mother Earth) and incorporated a 
very large block of concrete AND a significant slab of steel - or a heavy rail 
of steel.

Lots of inertia ( physics-speak there) provided, and I suspect there was 
isolation from Mother earth as well.

Brian Swale
-- 
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