Check your mattes for values over 1. That could be the culprit.

cheers,
diogo

On Thu, Sep 8, 2011 at 7:52 PM, Nick Guth <[email protected]> wrote:

> A bit of an older thread, but I ran into a situation where the hypot method
> of blending won't work accurately.
>
> I am trying to combine 3 mattes and do an edge detect for some detailed
> corrections. I ran into this thread and realized I was always combining
> mattes with a simple over, but loved the way hypot looked in blended areas
> so I switched my merges to that. When changing it to hypot, the edge
> detection node seems to see all of the individual edges of each matte,
> instead of the combined matte. Any ideas of why this is happening?
>
> I hope the pictures show exactly what I am trying to say. Cheers!
>
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