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ATM changing camera f stop

To: "Frank Ward" <thewards@pop.mindspring.com>, "Michael Perata @ p-solutions" <michaelp@p-solutions.com>
Subject: ATM changing camera f stop
From: "Bill Hollenbach" <zasah52@iafrica.com>
Date: Wed, 2 Dec 1998 08:45:42 +0200
Cc: <ATM@shore.net>
Reply-To: "Bill Hollenbach" <zasah52@iafrica.com>
Sender: owner-atm@shore.net


Hi Frank,
In a camera the focal distance is adjusted by focussing.
The F stop, changes the amount of light coming into the camera.
It does not change the focal distance.
Cheers

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