At 02:07 PM 5/12/2006, John Celio wrote:
> > Anyone got any theories on how F and later series lenses are powered?
>
>What are you talking about?  The only lenses I can think of that would need
>any power are the Power Zoom and (future) supersonic focusing lenses, both
>of which have those two special contacts just inside the lens mount for
>providing power from the camera body.  Otherwise, all other lenses are
>driven by the camera's AF motor.  Is there something else that would need
>power?

I imagine the chip that supplies lens info to the camera needs power.

Dave



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