Archived posting to the Leica Users Group, 2000/04/02

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Subject: Re: [Leica] Forget about depth of field scales
From: Mike Quinn <mlquinn@san.rr.com>
Date: Sun, 02 Apr 2000 15:45:27 -0700
 
Oops. Sorry. On rereading the below I realized that my previous calculation
was in error.

Since the cow has to be smaller than the aperture number, my lens will have
to be stopped down to f2001. I guess that will give a pretty wide depth of
field.

Now if I can just get her to hold still long enough to make an exposure...

Mike (was never much good with cows) Quinn


> Mitch Alland wrote:
> 
>> For the other cases, in which the smallest object to be recorded is smaller
>> than the lens aperture, he gives a simple formula to calcute the DOF. (Size
>> of
>> object/lens aperature size x focal distance gives 1/2 the DOF).
>