[OM] Re: What is backfocus?

[Jeff Keller]

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

On 6/21/07, Winsor Crosby <wincros@xxxxxxxxxxx> wrote:
>
> It does not check final focus. People hated that with the lens
> hunting back and forth with early AF and with the limited control of
> digital point and shoots. Modern AF calculates how far out of focus
> it is and directs the focusable part of the lens to move to a
> calculated position where the lens will be in focus and it takes into
> account how much things will coast.

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