On Mon, 7 Dec 1998 22:32:28 -0800, Chris Jeppesen <chr### [at] digiquillcom> wrote:
>Can't you model it directly as an object? I am working on a still that has
>motion blur, and
>it is done by using multiple transparent copies of an object. Sure it takes
>longer to render,
>but it is completeley POV (no patches even) and doesn't require any extra
>software

Technically, though, it isn't completely accurate.  Consider a cube that has
been "blurred" in this way.  Now consider a point that is occupied by the 
cube for the entire exposure.  Its color should be exactly that of the cube,
but using the "multiple transparent objects" method it won't be, because no
matter how many cubes you use, you'll still have some transparency.  You 
can make that part accurate by using enough cubes that the remaining 
transparency is less than 1/255, but the rest of the trail is inaccurate as
well.

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