Posted by Dave on 01/11/19 11:48

Ok, here's my theory even though I haven't seen the movie
yet:

The set that the actors are on is a large green screen area
that has illuminated green all the way around. The camera in
the studio is a computer motion controlled camera that can
move in any direction. The commands for the camera are also
loaded into a CGI program and used to control the 'virtual'
camera which has a high detailed image background, perhaps a
spherical photo (or movie) of a real city scene along with
close up 3D models of the building that they're supposed to
be standing on and all the nearby 3D objects. If there are
obstacles in the studio that are in front of the green (like
cables, microphones, light stands), they can manually erase
them before applying the two shots together to make the
composite. It's not difficult to remove slim objects from a
green screen shot using software 'brushes', just like
photoshop can do.


On Tue, 23 May 2006 23:47:09 GMT, "Doc"
<docsavage20@xhotmail.comx> wrote:

>There's a shot in MI-3 where you see Tom Cruise and Ving Rhames standing on
>the edge of the roof of a building. Starts from a fairly good distance out
>and above them, then moves in close, then circles around them.
>
>I'm guessing the "rooftop" is a set and the area around and below them
>matted in with CGI - and the cam was moved to them? However, as the shot
>progresses, it reveals at least a 360 degree view of skyline and obviously
>you don't see any film production hardware - are they able to progressively
>replace the soundstage with a digital skyline view?
>
>Or was it done in an altogether different way than I'm envisioning?
>

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