Re: f/stop calculation

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From: Jan Pietrzak (jpptprnt@gte.net)
Date: 08/04/00-03:40:19 PM Z

Michael,

According to Jim Stull 'The Hole Thing' take .028" and divide it into 4
inches equaling 142.85714 ot f/150. Stull states that .029" would work
better with a 13" focal length.

Just a thought jp

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