Have asked over on OD Force too, I am looking for a way to render overscan using Wren for a wireframe render so that it will line up with my main PBR render which has overscan.

Wren doesnt seem to recognize the Screen Window Size camera parameter,
are there reliable alternative ways of outputting wireframe renders which might allow for overscan or maybe someone knows a way to add overscan to Wren?

Any suggestions welcome, I am using Houdini 15

You can modify the aperture or the focal length to achieve the same result as changing screen window.

Thanks, will give it a try later, appreciate the suggestion