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[OM] Re: What is backfocus?

Subject: [OM] Re: What is backfocus?
From: Winsor Crosby <wincros@xxxxxxxxxxx>
Date: Thu, 21 Jun 2007 15:32:25 -0700
Most of the information I got from reading Thom Hogan's posts. I am  
very confident of his accuracy. Most knowledgeable guy on camera  
technology I have run across. I think follow focus is only continuous  
in the sense that the F280 FP flash was continuous - a bunch of very  
quick discrete focus actions that only seem continuous. You would  
have a very slow single focus if that happened. And you would hear it  
refocus. Under bad light, low contrast conditions what you may get is  
a slow calculation, but the focus motion is instantaneous and not  
repeated to get it right.

Winsor
Long Beach, California, USA




On / June 21, 2007 CE, at 3:00 PM, Jeff Keller wrote:

> Are you sure about this? Obviously the camera doesn't have information
> about all fo the lenses that will be attached to it. The lens doesn't
> know which camera it will be attached to. Clearly follow focus in a
> continuous feedback but I would be surprised if single focus doesn't
> also use continuous feedback until focus is achieved.
>
> -jeff



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