BoardWalk Empire Tracking Question

#1

http://www.artofvfx.com/BOARDWALK/BDWALK_BRAINSTORM_VFX_10B.jpg

http://www.artofvfx.com/BOARDWALK/BDWALK_BRAINSTORM_VFX_10A.jpg

How did they get their extension of the sand ground plane to track with the footage?

Would a 2d track of a matte painting work?

Or is the sand ground plane a 3d plane tracked in the proper perspective and the buildings in the background are on other planes, at right angles to the sand?

#2

3d tracking will generally give better perspective. In most cases it is preferable to have a 3d track rather than try and fake the whol ething with a 2d track and some corner pin action.

#3

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