Thanks Jeff, anyone else have any details about these "low pass filters" ?
> Jeff Keller <jrk_om@xxxxxxxxxxx> wrote:
>
> Hopefully somebody on the list with good knowledge will speak up.
> Most
> of my experience with sampling systems was long ago. The filtering
> can
> not be done after the signal is sampled and the filter is carefully
> designed to optimize the performance. So for a camera the filter
> (some
> sort of piece of glass) is going to blur closely spaced points
> together
> with carefully chosen ratios between how much signal is smeared at
> each
> distance away.
>
> I don't have a clue how a lens is designed to do that. Tim Hughes'
> comment about using IS lens technology is easier for me to visualize.
>
> -jeff
>
> ----- Original Message -----
> From: "Wayne Harridge" <wayneharridge@xxxxxxxxxxxxxxx>
>
>
> >
> > How is this "low pass filter" implemented ?
> >
> > ...Wayne
> >
>
>
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Wayne Harridge
http://members.optusnet.com.au/~w_harridge
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