Rodar para tracking

En la página de otro tracker interesante (Syntheyes), da unas indicaciones básicas de cómo se debe plantear el movimiento de cámara teniendo en cuenta el tracking que se realizará después en post...

Más en http://www.ssontech.com/learning.htm#Tutorials

Case of the Wandering Cameraman

This is a typical plan for a cameraman (or -woman) with a hand-held camcorder,
shooting a shot with "a moving camera." Unfortunately, it
doesn't focus on anything long enough to get a 3-D track.

Attending to a Subject

This is a better plan—here the cameraman focuses on a subject as
he rotates around it.

Shooting from a Tripod

Here's a shot from a tripod, done right. The camera is mounted on the
camera so that the nodal point, up front between the lens and camera
chips, is centered at the axis of the tripod. SynthEyes's tripod mode will
solve it easily, producing a direction to each tracker, but mathematically
it is impossible to determine a distance to anything. This won't
necessarily prevent you from inserting objects into the shot, though.

Almost a Tripod

This is what you get using a cameraman as a tripod—the camera is
spinning around a point well behind the camera, nowhere near the nodal
point. The shot will exhibit some perspective changes, and whether or not
the shot is solvable depends on how close the trackable objects are,
compared to the radius of the camera lens motion. If they are close
enough, a 3-D solve might be obtained. If they are far away, a tripod-mode
solve will work. But there is a no-solving zone in between, don't go
there!

Half-Right

Here, our intrepid cameraman travels forward through the scene,
focusing on the scene to the left. As long as there are things to track
over there, so far so good. However, the cameraman reaches the end, spins
around, and comes back the same way. The returning section is trackable
too. But, the turning-around part is not trackable; it is an in-between
shot, neither 3-D nor tripod. Shots like this, but less obviously, are
easy to achieve if the camera is allowed to spin rapidly. For this
particular shot, it might be possible to break the shot into three pieces:
the first move, the tripod pan, and the second move; and track each
separately.