Archived posting to the Leica Users Group, 2000/08/07

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Subject: Re: [Leica] easy calc of hyperfocal distance
From: Tina Manley <images@InfoAve.Net>
Date: Mon, 07 Aug 2000 17:13:31 -0400

At 05:05 PM 8/7/00 -0400, you wrote:
>I recently read an easy to remember formula for calculating hyperfocal
>length.  Divide the focal length of the lens (in mm) by 10, square the
>result, and you have the hyperfocal length in feet for f11.
>For example, for a 50mm lens, the HFD is (50/10) ^2, or 25 feet.
>Can anyone verify the accuracy of this method?
>Dan C.

It's a lot easier to place the infinity mark on the aperture.


Tina Manley, ASMP