Archived posting to the Leica Users Group, 2001/02/07

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Subject: Re: [Leica] how can the 75 Lux focus go bad?
From: George Lottermoser <imagist@concentric.net>
Date: Wed, 7 Feb 2001 08:21:53 -0600
 
digphoto@telalink.net (Henry Ambrose)2/6/019:33 PM

> The acceptable DOF can indeed be calculated but in the end its
the 
> subject matter and the viewing of the picture that counts.

At those times when I've needed to have a "visual" idea of the
DOF of a lens, I've phtographed a ruler at a very severe angle to
the film plane, focused on a numbered rule and observed the
rendering of the rules ahead and behind the sharp rule. Works for
me for visual checks.

George