yes, i exported fbx a few times, with different settings on the undistort images.
I then compared the undistort versions as well as the original photo with the camera rendered from the fbx file in 3dsmax/vray.
I find the images are close, and with a bit of pan in photoshop I can make it work.
I think i found the outer boundary to be the closet.
I didn’t add any camera distortion to the 3d camera. which i guess where the problem could be.
when I tried this in photoscan a while ago. I had the same issue. so Its probably a workflow issue.