Archived posting to the Leica Users Group, 1998/01/30

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Subject: Re: [Leica] Depth-of-Field Tables, M & R lenses
From: "Lucien_vD@compuserve.com" <Lucien_vD@compuserve.com>
Date: Fri, 30 Jan 1998 11:00:52 -0500

Francesco wrote:

>I wondered if anyone has a DOF Guide from Leica......is it a very
>detailed publication, showing DOF tables for ALL lenses?


Francesco,

I have a "Depth -of-Field Tables for Leica M and Leica R lenses"
Ernst Leitz Wetzlar GMBH
110-057  h dt./engl./frz.
IX/83 (september 1983)

It is very detailed.

You will have the formulas for close-up photography
in German, English and French,
and the DOF tables for the following focals:
19,21,24,28,35,40,50,60,65,70,75,80,90,100,
135,180,200,250,280,350,400,500,560 and 800mm.
All the tables have been calculated with a circle-of-confusion
of 1/30 mm, and the figures have been rounded off for convenience.

Example of DOF available:

50mm
distance setting in meter only:
0,5-0,6-0,7-0,8-0,9-1-1,2-1,5-2-3-5-10m =

and infinite.
F/stop: 1-1,2-1,4-2-2,8-4-5,6-8-11-16-22 =


Ex.: 50mm at F:5,6 and 0,9 m =3D between 0,86 and 0,95 m
or
75mm at F:1,4 and 1,5m =3D  between 1,48 and 1,52m
or
50mm at F:1 and 0,9m =3D  between 0,892 and 0,908 m  :-)

Viva EL "M6 0,85"  !!

I don't know if Leica still provide a DOF table.

Lucien
BELGIUM