Tracking around the corners/edges of a wide angle shot

Any specific recommendation for tracking surfaces around the corners of a wide angle shot? There is natural stretch distortion from super wide rectilinear lenses that Mocha Pro cannot detect with the lens module because all lines are straight anyway but the perspective of surfaces traveling through or approaching the edges of a picture make it impossible to get a lock onto the surface as it travels from the edges of the frame to the centre.

 

 

You can try to build a lense and import it into mocha with an ST map, but without being able to calculate the lens mocha will have trouble figuring it out. I am happy to take a look at the shot if you email it to me at maryp@imagineersystems.com and see if there’s a creative solution for this shot.

Cheers!
Mary