Hi,  
 
We have a zoom shot footage. I have checked variable focal length and variable Distortion. Finally in MM 3D view all is fine  but it's impossible to export deformable object (Image plane) representing the variable  distortion in our 3D packages either Maya or LW. It's exporting only one value from computing variable Distortion. Any suggestion?  
 
How would you deal with such a shot - zoom lens with variable distortion.
 
Thanks in advance.

Hi, this is a serious problem that you have, and I dont think there is a solution for you, sorry. Since your distortion value is used only by MM and not by the 3d package (maya, 3ds), which uses a pinhole camera modelisation, u have to deal with distortion by another way. The usual way is to undistord youre sequence with distoima (and the value given by MM) and then render youre cg undistorded, then apply the inverse transformation: the distortion (again with distoima). I think distoima is capable of computing images with an animated distortion value (you should check if i'm right), but the 3d software won't render images with variable resolution so that's the end of it. But of course i could miss something and this is only my opinion. My advice to you is to resolve youre shot with variable distortion, then you solve it again with an average of the animated distortion you found before. Then you should be able to deal ith a fixed value of distortion. But of course it depends of the amount of distortion that you have.

Thanks oreste,
 
I will try to make a script that runs through the image sequence and distorts each frame with the computed distortion from MM