Zooming out a round trolly track shot

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Old 01 January 2013   #1
Unhappy Zooming out a round trolly track shot

Heyy guys I am kinda stuck on a tracking shot
The director shot a round trolly shot with a character(almost 90 degree rotation) with a focal length of 8mm
Now he wants to turn it into a helicopter shot (basically zooming out the whole thing)

I tracked the shot and i have a tracked camera with a focal length of 8 mm
when i hit the playblast, it is perfectly sticking to the track points...

For a helicopter shot...the focal length needs to be changed...
The problem starts when i change the focal length....the track slips...(for obvious reasons it will coz of perspective distortion)
How do I solve it??

Heres an image explaining the scene
this is from the top view
A guy is standing on a cliff(which has to be 3d)
The cream colored stuff is how it is shot
and the red colored stuff is how i want the shot to be like
Attached Images
File Type: jpg Temp.jpg (56.0 KB, 6 views)
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Old 01 January 2013   #2
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