> Wayne S <om4t@xxxxxxxx> wrote:
>
> Since the dust in not directly at the focal point, just like small
> apertures increase DOF, they have a similar effect close to the focal
> plane, making the dust more in focus.
>
So it just makes the shadow of the dust particle sharper because you're using
more of a "point source" - fair enough.
...Wayne
Wayne Harridge
http://lrh.structuregraphs.com
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