I'm sorry.. but perhaps I don't understand your problem entirely.
How about smacking that old render onto a plane, scale it down,
add the border and render with a orthographic camera?

Stefan

"How Camp" <hac### [at] gmailcom> skrev i meddelandet 
news:web.434eaaf55d09ff87af56bf270@news.povray.org...
> I'm having a mental block at the moment.  This seriously can't be hard...
>
> I'm attempting to render an image_map of a previously traced scene - the
> goal of which is to allow me the luxury of rendering a 
> frame/border/special
> effect of some sort around the original image.
>
> I need to re-render my image_map such that every pixel traced is 
> correlated
> to the original image_map pixel.  How can I set up my image_map (distance
> from camera, mainly) to ensure this to be the case?  After some basic 
> math,
> I've gotten close, but it's not a perfect match.
>
> Any thoughts?
>
> - How
>
>
>

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