Luminance map problems

Hi,

How come everytime I render out a grey Luminance map there are artifacts all around my image. For example, there is all these white zig zag lines that are on the out side areas where it should be transparent.

anyone had this problem?

Thanks,
Lou

What format are you rendering in? QT or sequences?
Do you have edge width or motion blur enabled?

If you send me your project, I can take a look.

Rosss@imagineersystems.com