Archived posting to the Leica Users Group, 1999/12/08

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Subject: Re: [Leica] DOF table for Voigtländer Skopar
From: Mark Rabiner <mrabiner@concentric.net>
Date: Wed, 08 Dec 1999 12:10:35 -0800
 
Martin Howard wrote:
> 
> Here's the dof table for the Voigtländer 25mm f/4 Skopar.  The abbreviation
> 'inf' is used to designate infinity, below.
> 
>           f4         f5.6        f8         f11        f16        f22
> -----+------------------------------------------------------------------
> inf. |  inf-4.93    inf-3.58   inf-2.54   inf-1.81   inf-1.29   inf-0.93
> 3.0m | 7.46-1.89  17.54-1.66   inf-1.40   inf-1.15   inf-0.92   inf-0.72
> 1.5m | 2.11-1.17   2.50-1.08  3.48-0.97  7.84-0.84   inf-0.72   inf-0.59
> 1.0m | 1.23-0.85   1.35-0.80  1.58-0.74  2.08-0.67  3.88-0.59   inf-0.50
> 0.7m | 0.80-0.62   0.85-0.60  0.93-0.57  1.07-0.52  1.39-0.48  2.40-0.42
> 
> M.
> 
Comparing the DOF scale on my 24 M shows huge differences?!
Mark Rabiner