On Thu, 4 Jan 2007, Markus Maurer wrote:
> Why do some lenses go over infinity focus? What is that good for?
> greetings
> Markus
>
For AF lenses, it allows for overshoot in the AF control
algorithm. That will make for a faster and more accurate AF lock than if
the lens hits a hard stop at infinity focus.
-Cory
--
*************************************************************************
* Cory Papenfuss, Ph.D., PPSEL-IA *
* Electrical Engineering *
* Virginia Polytechnic Institute and State University *
*************************************************************************
--
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net
