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Re: [OM] Back focusing

Subject: Re: [OM] Back focusing
From: <jjohnso4@xxxxxxxxxxxxxx>
Date: Mon, 4 Oct 2010 11:04:46 -0400
Ian Nichols wrote: 

> How does this happen?  surely it's a closed-loop system, i.e. focus
> sensor detects that image is out of focus and adjusts lens until it's
> in focus

Hi Ian,

The Canon AF systems are not closed loop and I doubt that Olympus is different. 
 I suspect that a closed loop system would degrade focus tracking to an 
unacceptable level.

Later,
Johnny
------------------
Johnny Johnson
Cleveland, GA
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