Archived posting to the Leica Users Group, 2001/02/08

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Subject: RE: [Leica] Re: DOF, thanks Austin
From: "Austin Franklin" <austin@darkroom.com>
Date: Thu, 8 Feb 2001 20:32:23 -0500

> Contrary to what Austin might believe, the reference
> standards applied by Leitz, Zeiss, Nikon, Canon, and other
> top lens manufacturers, in determining
> the depth of field of their lenses, are all very close.

Hum.  Then, as I pointed out, why are the DOF scales almost one stop
different in the same focal length lenses I compared?  That's hardly close!
So much for your 'reference standard'.

> It is very hard to help others learn, when they don't
> evaluate what they hear or read in a scholarly open-minded
> way.  If one covers one's ears, all
> they will hear are themselves.

Yes, exactly ;-)