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[OM] Re: Figuring out depth of field with 4/3 adaptor

Subject: [OM] Re: Figuring out depth of field with 4/3 adaptor
From: James Royall <james@xxxxxxxxxxxxx>
Date: Wed, 30 Mar 2005 23:50:06 +0100
Hmm. I should have read the manual. I was sure that  my focussing 
didn't match the scale on the lens, but thought it can't be. Now I'm 
completely flummoxed as to why this would be.

James

On 30 Mar 2005, at 06:15, Mark Dapoz wrote:

>
> On Tue, 29 Mar 2005, Moose wrote:
>>
>> But how do I work out depth of field using the scale on the lens?
>
> Keep in mind that the point at which an OM lens focuses on the E-1 may 
> not
> line up with the distance markings on the lens. The Olympus 
> instruction sheet
> for the OM adapter has the following note:
>
>    "The distance scale on the OM system lens may not indicate the 
> actual
>     distance.  Always use the viewfinder for focusing."
>
> You may have focused on something 5m away and the lens scale may 
> indicate
> it's at 3m.  This would of course render the DOF scales on the lens 
> useless.
>                               -mark
>
>
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