The upcoming G-Force movie is a Hybrid film, mixing live action backgrounds with CG characters, and is in Disney 3D.  However, shooting live action in 3D is technically difficult, and initially thought to be impossible.

The studio and Jerry from the very beginning wanted to do it in 3-D. We did tests and it was only after having done them that (it was) just technically not possible. We just couldn’t do it.

We’ve seen a lot of animated full length rendered CG characters now. We’ve seen very few live-action 3-D movies and the reason is it’s almost impossible to shoot them very easily and make a good 3-D movie that way. There needs to be a quantum leap in the technology.

via News: G-Force Presentation And Q&A With The Creative Team | Latino Review.