Hi m-dynamics,

i did a bit camera matching long time ago in SketchUp and other apps.

AFAIK the free vers. of SketchUp does not export camera coordinates in an .skp or Collada file,
while the Pro vers. exports cameras as polygon meshes.

What i did was the following:

I installed this script:

http://rhin.crai.archi.fr/rld/plugin_details.php?id=55

to get the camera coordinates in SketchUp for use in my other app,
and used this script:

http://supodiumforum.websitetoolbox.com/post?id=2393129
(posting #7)

to match the SketchUp viewport size with the Window/Rendering size of my other 3D app.

Hope this helps a bit!

Regards
Stefan