Lens un-distortion with no cropping of original plate?

Hi everyone,

Bear with me because I use Fusion for my day job 😉

At the moment I am trying to go through an undistortion pipeline to use for match moving and the integration of CG elements.

The Nuke Lens distortion node does a very good job of undistorting a plate using a lens grid but is there any way to stop it cropping the output image and just overscan instead? (black BG with bent edges of frame, see pic)

The reason why I want to use Nuke to undistort the plate instead of my match moving program is that its a lot more accurate, syntheyes does not take into account distortion being off centre (which it is) or multiple types of distortion in one frame.

Hope someone can shed some light on it for me 😀
Thanks guys!

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