--- "Sturgess, Jeff A Mr JMLFDC" <[EMAIL PROTECTED]>
wrote:
> >Often the situation raises where an AF performance would be highly
> >desired at the frame angles or towards outer frame boundaries and
> >the only solution could be either manual focusing (thanks to God,
> >Canon's USM allows instant one) or recomposing.
>
> Yes, fortunately, manual focusing allows me to focus AND compose and
> I've actually found myself using manual focus more and more lately.
> Regrettably, I don't always remember to set the lens switch back to
> AF.
Xmm, but what I meant is the wonderful ability to do manual focus
adjustments without switching to manual focusing mode. This is where
USM shines - no need to switch between AF and manual modes. Just stay
in AF, then manually adjust the focusing ring and shoot - yet staying
in AF.
> >The reason of these points not to be spread out over the entire
> finder
> >area might be hidden in the technical complication of achieving
> stable
> >AF tracking performance while passing the subject between different
> AF
> >points.
>
> I suspect there is some legitimate reason behind it and hope it's not
> just a lack of thought by Canon engineers or the lack of people even
> suggesting it to Canon. Sure would love to know the truth though!
Obviously, I do not think there might be any lack of thought by Canon
(or any other major camera manufacturer) engineering, obviously there
are reasons (perhaps even more marketing-related).
> >Perhaps in some future the technology will allow a stable AF
> tracking
> >over the entire viewfinder area without sacrificing the area
> >coverage...
>
> I'm hoping something will do it. I'd be willing to even limit focus
> tracking to an area like the 45 point zone but just give me a few
> more outside sensors for focusing only (I guess adding metering to
> those extra points would be asking too much).
>
> Thanks for the comments!
> Jeff
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