I've taken apart many a diaphragm from different microscopes (damn things
break too often!) which work on the same principle.  To me, it looks like
you've got the overlapping just fine.  For a pivot point, if you're looking at
each
piece as a triangle with it's upper tip at the centre of the circle, you
should use
the bottom left corner as the pivot point and let all the pieces fall to the
right.

hope this helps,

Ph_Rob


Dave Blandston wrote:

> Has anyone ever animated a camera lens aperture? I've got part of it done,
> but I can't seem to figure out what the correct pivot point should be for
> the blades. And I can't figure out how to get the correct overlapping
> pattern, or a good 3D effect. How do those darned things work, anyway?
>
> -Dave
>
>                Name: Test.mpg
>    Test.mpg    Type: MPEG Video (video/mpeg)
>            Encoding: x-uuencode

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