Can I make a camera use the lens distortion parameters determined by camera tracking? The camera tracking utilities allow you to specify or estimate lens distortion parameters (k1, k2, and k3).  Is it possible to get the Blender camera to adopt this specific distortion?  I can't find a way to set these directly on the camera.  Nor can I find a way to get the lens distortion in the compositor to take these.

I have a really great track on a very wide angle scene with a very nice distortion.  I can't seem to match the distortion perfectly.

Thanks in advance.
Yes it's possible.
Once you've determined the distortion values using the movie clip editor's lens distortion's tools you can use them on blender scenes using the compositor.
You need to add a Movie Distortion node in Distort mode, to your render layer. Make sure you select select the video clip as source.



Read: https://blender.stackexchange.com/a/15622/1853